Android, activity remembering counting data

Android, activity remembering counting data - android

Is there any way to activity remebers the counting, because when you start the app, you click the button which random generates an image from drawable, and it doesn't let user to press that button for 30 secs.. the problem now is that when you are waiting for counter go to 0 you can easily press option menu, click settings and click "povratak" ,which starts activity all over again and the counter losses its point because user can now again press button that generates image (and I dont want that):/
MainActivity
package com.example.ams;
import java.util.Random;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity {
final Random rnd = new Random();
ImageView img = null;
Button btnRandom = null;
#Override
protected void onCreate(
final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
img = (ImageView) findViewById(R.id.imgRandom);
btnRandom = (Button) findViewById(R.id.btnRandom);
}
protected final static int getResourceID
(final String resName, final String resType, final Context ctx)
{
final int ResourceID =
ctx.getResources().getIdentifier(resName, resType,
ctx.getApplicationInfo().packageName);
if (ResourceID == 0)
{
throw new IllegalArgumentException
(
"No resource string found with name " + resName
);
}
else
{
return ResourceID;
}
}
public void clickHandler(final View v)
{
switch(v.getId())
{
case R.id.btnRandom:
{
if (!btnRandom.isEnabled())
{
return;
}
// I have 3 images named img_0 to img_2, so...
final String str = "img_" + rnd.nextInt(45);
img.setImageDrawable
(
getResources().getDrawable(getResourceID(str, "drawable",
getApplicationContext()))
);
btnRandom.setEnabled(false);
new CountDownTimer(30000, 1000) // Wait 30 secs, tick every 1 sec
{
#Override
public final void onTick(final long millisUntilFinished)
{
btnRandom.setText("Pričekaj do sljedeće kartice: " + (millisUntilFinished / 1000));
}
#Override
public final void onFinish()
{
btnRandom.setText("PROMIJENI KARTICU !");
btnRandom.setEnabled(true);
}
}.start();
break;
}
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.action_settings:
setContentView(R.layout.help);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
public void goBack(View v){
startActivity(new Intent(this, MainActivity.class));
}
#Override
public void onBackPressed() {
}
}
activity_main.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:background="#drawable/bgi"
>
<ImageView
android:id="#+id/imgRandom"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
/>
<Button
android:id="#+id/btnRandom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imgRandom"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/imgRandom"
android:onClick="clickHandler"
android:text=" Promijeni karticu !"
android:textColor="#ffffff"
android:textSize="25dp" />
help.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ScrollView
android:id="#+id/SCROLLER_ID"
android:layout_width="fill_parent"
android:layout_height="450dp"
android:fillViewport="true"
android:scrollbars="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:enabled="true"
android:freezesText="false"
android:overScrollMode="always"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbarStyle="insideOverlay"
android:scrollbars="vertical"
android:text="UVOD:Uz svaki scenario organizator moze odrediti da se koristi "AMS sustav" zbog realnijeg pristupa igri i viseg stupnja MILSIM-a. Organizator bira medice (ili kako se vec odredi) i oni moraju imati prilikom pocetka igre 46 kartica. />
</ScrollView>
<Button
android:id="#+id/button1"
android:layout_width="320dp"
android:layout_height="wrap_content"
android:text="Povratak" />
And if there is possible , show me your answers in code format, cause english is not my native language and often I don't understand what you guys mean :)

What you can do is inside the onPause() method store the current value of the timer in the SharedPreferences. When your app resumes in onResume(), you can get that value again, and if it exists start from that.

Related

Error while displaying records from external storage to listview

Im having problem while displaying .mp3 files from external storage to the listview. Im getting error with "ArrayAdapter requires a resource ID to be a TextView". All is set but dont know why this is happening. Below is the source code, please help me out!
"Activity_main.xml"
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.testproject.MainActivity" >
<ListView
android:layout_width="match_parent"
android:layout_height="300dp"
android:id="#id/android:list" >
</ListView>
<Button
android:id="#+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#id/android:list"
android:layout_alignParentBottom="true"
android:layout_marginBottom="43dp"
android:layout_marginLeft="20dp"
android:text="#string/stop" />
</RelativeLayout>
"list.xml"
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<GridLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/txt1"
android:layout_width="309dp"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</GridLayout>
</TableRow>
</TableLayout>
"MainActivity.java"
package com.example.testproject;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.ListActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
class mp3filter implements FilenameFilter{
public boolean accept(File dir, String filename) {
return filename.endsWith(".mp3");
}
}
public class MainActivity extends ListActivity {
private static final String SD_PATH = new String(Environment.getExternalStorageDirectory().getPath() + "/");
private List<String> voice = new ArrayList<String>();
private MediaPlayer mp = new MediaPlayer();
Button btn;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
updatePlayList();
btn = (Button) this.findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mp.stop();
}
});
}
protected void onListItemClick(ListView list, View view, int position, long id)
{
try{
mp.reset();
mp.setDataSource(Environment.getExternalStorageDirectory() + voice.get(position));
mp.prepare();
mp.start();
}catch(IOException e)
{
Log.v(getString(R.string.app_name), e.getMessage());
}
}
private void updatePlayList() {
File home = new File(SD_PATH);
if(home.listFiles(new mp3filter()).length>0)
{
for(File file: home.listFiles(new mp3filter()))
{
voice.add(file.getName());
}
}
ArrayAdapter<String> voiceList = new ArrayAdapter<String>(this,R.layout.list,voice);
setListAdapter(voiceList);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

Because the ArrayAdapter<String> need an TextView to show value, you can see the implement code of ArrayAdapter getView method. However your list layout is so complicated as the input. So you can choose one of these options below:
Try to change R.layout.list to
android.R.layout.simple_list_item_1 and test again
Create
YourCustomAdapterClass extends ArrayAdapter and figure out the
TextView in getView() method. Sample from here
CreateYourCustomAdapterClass extends BaseAdapter. Sample from here
Update code:
protected void onListItemClick(ListView list, View view, int position, long id) {
try {
mp.reset();
mp.setDataSource(SD_PATH + voice.get(position));
mp.prepare();
mp.start();
} catch (IOException e) {
Log.v(getString(R.string.app_name), e.getMessage());
}
}
private void updatePlayList() {
File home = new File(SD_PATH);
File[] fileList = home.listFiles(new mp3filter());
if (fileList.length > 0) {
for (File file : fileList) {
voice.add(file.getName());
}
}
ArrayAdapter<String> voiceList = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, voice);
setListAdapter(voiceList);
}

Android EditText not editable

I have a 2 activities with edittexts on them the first activity work fine but the second activity's EditText is focused but I can't edit it nor can I click the button on it.
Also everything works in the emulator but not when I install it on the device. (The keyboard popup also does not come up in the second activity where as it does in the first activity)
Below is the code for the1st and second activity
First Activity Class
package com.rohan.rohan_pc.sportappnew;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class LoginActivity extends ActionBarActivity {
EditText edtEmail, edtPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
//Initialize components
edtEmail = (EditText) findViewById(R.id.edtEmail);
edtPassword = (EditText) findViewById(R.id.edtPassword);
Button btnLogin = (Button) findViewById(R.id.btnLogin);
btnLogin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (edtEmail.getText().toString().length() > 0 && edtPassword.getText().toString().length() > 0) {
new GetAllCustomerTask().execute(new ConnecterClass());
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.login, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
// Connect to the DB
private class GetAllCustomerTask extends AsyncTask<ConnecterClass, Long, JSONArray>
{
#Override
protected JSONArray doInBackground(ConnecterClass... params) {
// Execute in background
return params[0].usrLogin(edtEmail.getText().toString(), edtPassword.getText().toString());
}
#Override
protected void onPostExecute(JSONArray jsonArray) {
if (jsonArray != null) {
JSONObject json = null;
try {
json = jsonArray.getJSONObject(0);
if (edtEmail.getText().toString().equals(json.getString("email"))) {
if (edtPassword.getText().toString().equals(json.getString("pass"))) {
Toast toast = Toast.makeText(getApplicationContext(), "login successful", Toast.LENGTH_SHORT);
toast.show();
Intent intent = new Intent(LoginActivity.this, SearchActivity.class);
//Pass the school_id
intent.putExtra("SCHOOL_ID", json.getInt("school_id"));
startActivity(intent);
} else {
Toast toast = Toast.makeText(getApplicationContext(), "password incorrect", Toast.LENGTH_SHORT);
toast.show();
}
} else {
Toast toast = Toast.makeText(getApplicationContext(), "failed to login ...", Toast.LENGTH_SHORT);
toast.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
//login(edtEmail.getText().toString(),""
/*
//Got to second screen if login is successful
Intent intent = new Intent(LoginActivity.this, AfterLogin.class);
//Pass the table name through
intent.putExtra("CLIENT_DB", clientDB);
startActivity(intent);
*/
}
}
}
}
Second Activity Class
> package com.rohan.rohan_pc.sportappnew;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class SearchActivity extends ActionBarActivity {
EditText edtFName, edtLName, edtIDNum;
ListView listViewSearch;
String sFName, sLName, sIDNum;
int school_id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
edtFName = (EditText) findViewById(R.id.edtFirstName);
edtLName = (EditText) findViewById(R.id.edtLastName);
edtIDNum = (EditText) findViewById(R.id.edtIDNum);
Button btnSearch = (Button) findViewById(R.id.btnSearch);
listViewSearch = (ListView) this.findViewById(R.id.listViewSearch);
//Initialize the default values for the search criteria variables
sFName = "";
sLName = "";
sIDNum = "";
//Load school_id
school_id = getIntent().getExtras().getInt("SCHOOL_ID");
if(edtFName.requestFocus()) { getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); }
btnSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(edtFName.getText().toString().length() > 0)
{
sFName = edtFName.getText().toString().trim();
}
if(edtLName.getText().toString().length() > 0)
{
sLName = edtLName.getText().toString().trim();
}
if(edtIDNum.getText().toString().length() > 0)
{
sIDNum = edtIDNum.getText().toString().trim();
}
new SearchAllCustomers().execute(new ConnecterClass());
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.search, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
//Search in the background
public void setListViewArray(final JSONArray jsonArray)
{
this.listViewSearch.setAdapter(new Search_ListView_Adapter(jsonArray, this));
//Setup what happens when a user clicks on a searched item
this.listViewSearch.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
try{
JSONObject clickedItem = jsonArray.getJSONObject(position);
Intent askActivity = new Intent(getApplicationContext(), AskActivity.class);
askActivity.putExtra("IDNUM", clickedItem.getString("idnum"));
askActivity.putExtra("SCHOOL_ID", clickedItem.getInt("school_id"));
startActivity(askActivity);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
}
// Connect to the DB
private class SearchAllCustomers extends AsyncTask<ConnecterClass, Long, JSONArray>
{
#Override
protected JSONArray doInBackground(ConnecterClass... params) {
// Execute in background
return params[0].searchPlayers(school_id, sFName, sLName, sIDNum);
}
#Override
protected void onPostExecute(JSONArray jsonArray) {
if (jsonArray != null) {
setListViewArray(jsonArray);
//login(edtEmail.getText().toString(),""
/*
//Got to second screen if login is successful
Intent intent = new Intent(LoginActivity.this, AfterLogin.class);
//Pass the table name through
intent.putExtra("CLIENT_DB", clientDB);
startActivity(intent);
*/
}
}
}
}
The XML - First Activity
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".LoginAcivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="#+id/edtEmail"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="52dp"
android:hint="email ..."
/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="#+id/edtPassword"
android:layout_below="#+id/edtEmail"
android:layout_centerHorizontal="true"
android:layout_marginTop="44dp"
android:hint="password ..."
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="#+id/btnLogin"
android:layout_below="#+id/edtPassword"
android:layout_centerHorizontal="true"
android:layout_marginTop="49dp" />
</RelativeLayout>
The XML - Second Activity
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="com.rohan.rohan_pc.sportsappv001.SearchActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Search"
android:id="#+id/textView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:hint="Name"
android:ems="10"
android:id="#+id/edtFirstName"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:hint="Surname"
android:ems="10"
android:id="#+id/edtLastName"
android:layout_below="#+id/edtFirstName"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/edtIDNum"
android:hint="ID Number"
android:layout_below="#+id/edtLastName"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignRight="#+id/edtLastName"
android:layout_alignEnd="#+id/edtLastName" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:id="#+id/btnSearch"
android:layout_below="#+id/edtIDNum"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="64dp"
android:layout_marginTop="42dp" />
<ListView
android:layout_width="wrap_content"
android:layout_height="200dp"
android:id="#+id/listViewSearch"
android:layout_alignParentBottom="true"
android:layout_toEndOf="#+id/edtIDNum"
android:layout_alignTop="#+id/edtFirstName"
android:clickable="true"
/>

I just figured to re-create the app. I dont think it is a wise decision to copy the raw files to another directory and use that.

Why my Android application is eating so much RAM?

I have an Android application with a very simple main activity. It only has two buttons, one textview and one edittext field. I launch the main activity (I don't do anything, just launch it from app drawer), then I press home button to get to my home screen, go to settings > appmanager > running > cached background processes and there I see that my app is eating more RAM than other cached background processes, around 8 MB of RAM. Is it normal? Why is it eating more than other apps? This is my code:
MainActivity:
package com.example.myapp;
import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
int memoryClass = am.getMemoryClass();
long maxMemory = Runtime.getRuntime().maxMemory();
long totalMemory = Runtime.getRuntime().totalMemory();
Log.i("ilog", "memoryClass: " + memoryClass);
Log.i("ilog", "maxMemory: " + maxMemory);
Log.i("ilog", "totalMemory: " + totalMemory);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
private Button button1;
private Button button2;
private TextView textView1;
private EditText editText1;
private ComponentName cn;
private String disable = "Disable app";
private String enable = "Enable app";
private int enabledState;
private PackageManager pm;
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
button1 = (Button) rootView.findViewById(R.id.button1);
editText1 = (EditText) rootView.findViewById(R.id.editText1);
textView1 = (TextView) rootView.findViewById(R.id.textView1);
button2 = (Button) rootView.findViewById(R.id.button2);
cn = new ComponentName(getActivity(), CallReceiver.class);
pm = getActivity().getPackageManager();
enabledState = pm.getComponentEnabledSetting(cn);
if (enabledState == PackageManager.COMPONENT_ENABLED_STATE_ENABLED) {
button1.setText(disable);
} else {
button1.setText(enable);
}
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
enabledState = pm.getComponentEnabledSetting(cn);
if (enabledState == PackageManager.COMPONENT_ENABLED_STATE_ENABLED) {
pm.setComponentEnabledSetting(cn,
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
button1.setText(enable);
} else {
pm.setComponentEnabledSetting(cn,
PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP);
button1.setText(disable);
}
}
});
button2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (editText1.getText().toString().length() > 0) {
Intent callImitateIntent = new Intent(getActivity(), CallReceiver.class);
callImitateIntent.putExtra(TelephonyManager.EXTRA_STATE, TelephonyManager.EXTRA_STATE_RINGING);
callImitateIntent.putExtra(TelephonyManager.EXTRA_INCOMING_NUMBER, editText1.getText().toString());
getActivity().sendBroadcast(callImitateIntent);
} else textView1.setText("Invalid incoming number");
}
});
return rootView;
}
}
#Override
public void onDestroy() {
super.onDestroy();
Intent serviceStopIntent = new Intent(this, WindowService.class);
stopService(serviceStopIntent);
}
}
fragment_main.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.myapp.MainActivity$PlaceholderFragment" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="#string/welcome" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:maxLength="12"
android:hint="#string/edittext1" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/editText1"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:text="#string/button2" />
</RelativeLayout>
So can anyone tell me why is it eating so much RAM? Thanks in advance!

TimePicker + CheckBox

I've got a TimePicker in my app and i want to add above it a CheckBox that if it checked the TimePicker won't work. This is my TimePicker: http://developer.android.com/guide/topics/ui/controls/pickers.html#TimePicker.
How can I do that? I want the timePicker to look the same as the example.

I will put here the entire project also for others to use it if they ever need it:
Short description: A program that let's you get the time set by user and show it in the bottom of the page, after you press Done button.Used intent to get from one activity to another.
--------Main Activity-------
package com.example.chxboxtest;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener {
private Button start_intent_button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start_intent_button = (Button) findViewById(R.id.start_intent_button);
start_intent_button.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.start_intent_button: {
Intent intent = new Intent(this,TimePickerTest.class);
startActivity(intent);
}
break;
}
}
}
-------------Main Activity XML-----------------
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id="#+id/start_intent_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Start Intent Time Picker"
android:layout_centerInParent="true"
/>
</RelativeLayout>
-------------TimePicker class ---------------
package com.example.chxboxtest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.Toast;
public class TimePickerTest extends Activity implements OnClickListener{
private CheckBox cBox;
private TimePicker tPicker;
private TextView showTime;
private Button done;
private String hour;
private String minute;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.time_picker_layout);
initButtons();
}
private void initButtons() {
tPicker = (TimePicker) findViewById(R.id.time_picker);
showTime = (TextView) findViewById(R.id.get_time);
done = (Button)findViewById(R.id.done);
cBox = (CheckBox) findViewById(R.id.time_picker_checkbox);
cBox.setOnClickListener(this);
done.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
//If check enable or disble timePicker
case R.id.time_picker_checkbox: {
if (((CheckBox) v).isChecked()) {
Toast.makeText(this, "CHECKED", Toast.LENGTH_SHORT).show();
tPicker.setEnabled(false);
} else {
Toast.makeText(this, "NOT CHECKED", Toast.LENGTH_SHORT).show();
tPicker.setEnabled(true);
}
}
break;
//If Done button pressed get time selected by user
case R.id.done:{
tPicker.clearFocus();
// re-read the values, in my case i put them in a Time object.
hour = tPicker.getCurrentHour().toString();
minute = tPicker.getCurrentMinute().toString();
if(tPicker.getCurrentMinute().intValue() < 10){
String setTimeText = hour+ " : " + "0" + minute;
showTime.setText(setTimeText);
}else{
String setTimeText = hour+ " : " + minute;
showTime.setText(setTimeText);
}
}
break;
default:
break;
}
}
}
-------------TimerPicker XML------------
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/timer_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/time_picker"
android:layout_toRightOf="#+id/time_picker_checkbox"
android:text="Check this to Cancel Alarm" />
<CheckBox
android:id="#+id/time_picker_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/time_picker"
android:layout_centerHorizontal="true" />
<TimePicker
android:id="#+id/time_picker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<Button
android:id="#+id/done"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/time_picker"
android:layout_centerHorizontal="true"
android:gravity="center"
android:text="Done" />
<TextView
android:id="#+id/get_time"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center_horizontal"
android:text="Time"
android:textColor="#FF0000"
android:textSize="25sp" />
</RelativeLayout>
-------------Manifest.xml-----------
**<activity
android:name="com.example.chxboxtest.TimePickerTest"
android:configChanges="orientation|keyboardHidden">
</activity>**
Dont forget to add TimePicker class as activity.
BestPracice add all xml text in strings.xml
Cheers

Here's an functional example with all your requirements.
Tested and 100% functional :)
Put this in xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
>
<TextView
android:id="#+id/timer_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Check this to Cancel Alarm"
android:layout_above="#+id/time_picker"
android:layout_toRightOf="#+id/time_picker_checkbox"
/>
<CheckBox
android:id="#+id/time_picker_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/time_picker"
/>
<TimePicker
android:id="#+id/time_picker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
/>
And Here is your java code:
package com.example.chxboxtest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.CheckBox;
import android.widget.TimePicker;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private CheckBox cBox;
private TimePicker tPicker;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initButtons();
}
private void initButtons() {
tPicker = (TimePicker) findViewById(R.id.time_picker);
cBox = (CheckBox) findViewById(R.id.time_picker_checkbox);
cBox.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.time_picker_checkbox: {
if (((CheckBox) v).isChecked()) {
Toast.makeText(this, "Deactivate",Toast.LENGTH_SHORT).show();
tPicker.setEnabled(false);
} else {
Toast.makeText(this, "Activate",Toast.LENGTH_SHORT).show();
tPicker.setEnabled(true);
}
}
break;
default:
break;
}
}
}
If you want this example in a custom dialog please let me know.
Cheers,

How to fit my design to all devices?

Hi I am developing a app in which alphabets are not fitting for every device. For HCL ME tablet my design won't fit. For samsung it is working. MY XML file is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2" android:orientation="vertical">
<LinearLayout android:id="#+id/linearLayout1" android:layout_height="match_parent"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_weight="1">
<LinearLayout android:id="#+id/linearLayout1" android:layout_height="match_parent"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_weight="1">
<TextView android:id="#+id/letter1" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"></TextView>
<TextView android:id="#+id/letter2" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="10dip"></TextView>
<TextView android:id="#+id/letter3" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="10dip"></TextView>
</LinearLayout>
<LinearLayout android:id="#+id/linearLayout1" android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_weight="1">
<ImageView android:id="#+id/imag"
android:gravity="center"
android:scaleType = "fitCenter"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:layout_gravity="center">
</ImageView>
</LinearLayout>
</LinearLayout>
<LinearLayout android:layout_gravity="bottom"
android:id="#+id/linearLayout2"
android:layout_height="wrap_content" android:orientation="horizontal" android:layout_width="match_parent">
<Button android:id="#+id/previous" android:layout_width="wrap_content" android:layout_weight="1" android:text="Previous" android:layout_height="wrap_content" ></Button>
<Button android:id="#+id/practice" android:layout_width="wrap_content" android:layout_weight="1" android:text="Practice" android:layout_height="wrap_content" android:onClick="onClick"></Button>
<Button android:id="#+id/home" android:layout_width="wrap_content" android:layout_weight="1" android:text="Home" android:layout_height="wrap_content"></Button>
<Button android:id="#+id/spell" android:layout_width="wrap_content" android:layout_weight="1" android:text="Spell" android:layout_height="wrap_content" android:onClick="Content"></Button>
<Button android:id="#+id/next" android:layout_width="wrap_content" android:layout_weight="1" android:text="Next" android:layout_height="wrap_content" android:onClick="Content"></Button>
</LinearLayout>
</LinearLayout>
and my java file is:
package com.android;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.SimpleGestureFilter.SimpleGestureListener;
public class MyAcivity extends Activity implements SimpleGestureListener {
private SimpleGestureFilter detector;
private static int counter=-1;
private String[] mBtn1 ={"C","D","E","F","G","H","IÄ","J","K","L","M","N","O","CA","CB"};
private TextView txtLetter;
private ImageView imgLetter;
private int[] imgArr={R.drawable.w1,R.drawable.w2,R.drawable.w3,R.drawable.w4,R.drawable.w5,R.drawable.w6,R.drawable.w7,R.drawable.w8,R.drawable.w9,R.drawable.w10,R.drawable.w11,R.drawable.w12,
R.drawable.w13,R.drawable.w14,R.drawable.w15};
private TextView txtKannada;
private String[] mBtn2 = {"CgÀ¸À","DªÉÄ","E°","F±À","GqÀ","Hl","IÄ¶","J¯É","Kr","LzÀÄ","M¯É","N¯É","OµÀzsÀ",
"CAUÀr","CB"};
private String[] mBtn3 = {"ARASA","AME","ILI","ISA","UDA","UTA","RUSHI","ELE","EDI","AIDU","oLE","OLE","AUSHADA",
"ANGADI","AHA"};
private TextView txtEnglish;
private int[] mAudio = {R.raw.a,R.raw.b,R.raw.c,R.raw.d,R.raw.e,R.raw.f,R.raw.g,R.raw.h,R.raw.i,R.raw.j,
R.raw.k,R.raw.l,R.raw.m,R.raw.n,R.raw.o};
protected MediaPlayer mp;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.content);
detector = new SimpleGestureFilter(this,this);
if(counter == -1)
counter =getIntent().getExtras().getInt("POSITION");
Typeface tf = Typeface.createFromAsset(getBaseContext().getAssets(), "fonts/brhknd.ttf");
txtLetter = (TextView)findViewById(R.id.letter1);
txtKannada = (TextView)findViewById(R.id.letter2);
txtEnglish = (TextView)findViewById(R.id.letter3);
imgLetter = (ImageView)findViewById(R.id.imag);
txtLetter.setTypeface(tf);
txtLetter.setText(mBtn1[counter]);
txtLetter.setTextSize(350);
txtKannada.setTypeface(tf);
txtKannada.setText(mBtn2[counter]);
txtKannada.setTextSize(100);
txtEnglish.setText(mBtn3[counter]);
txtEnglish.setTextSize(50);
Button btnNext = (Button)findViewById(R.id.next);
btnNext.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(counter<imgArr.length-1)
counter++;
changeContent();
}
});
Button mPlay = (Button)findViewById(R.id.spell);
mPlay.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mp = MediaPlayer.create(MySwara.this, mAudio[counter]);
mp.start();
}
});
Button btnPrvs = (Button)findViewById(R.id.previous);
btnPrvs.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(counter>0)
counter--;
changeContent();
}
});
Button btnPractice = (Button)findViewById(R.id.practice);
btnPractice.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MySwara.this,DrawingActivity.class);
startActivity(intent);
}
});
Button btnHome = (Button)findViewById(R.id.home);
btnHome.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MySwara.this,mainClass.class);
startActivity(intent);
}
});
}
public void changeContent()
{
txtLetter.setText(mBtn1[counter]);
txtKannada.setText(mBtn2[counter]);
txtEnglish.setText(mBtn3[counter]);
//imgLetter.setBackgroundResource(imgArr[counter]);
Bitmap bm = BitmapFactory.decodeResource(getResources(), imgArr[counter]);
imgLetter.setImageBitmap(bm);
}
#Override
public boolean dispatchTouchEvent(MotionEvent me){
this.detector.onTouchEvent(me);
return super.dispatchTouchEvent(me);
}
#Override
public void onSwipe(int direction) {
String str = "";
switch (direction) {
case SimpleGestureFilter.SWIPE_RIGHT : str = "Swipe Right";
if(counter>0)
counter--;
changeContent();
break;
case SimpleGestureFilter.SWIPE_LEFT : str = "Swipe Left";
if(counter<imgArr.length-1)
counter++;
changeContent();
break;
}
}
}
How i can fit to all devices. Can anyone help?? Thanks in advance.

There are couple of possibilities:
use different xml files for different sizes of screen -> check here http://developer.android.com/guide/practices/screens_support.html
you may use scrollview -> http://developer.android.com/reference/android/widget/ScrollView.html
or simply make your layout fit to the smallest screen size you like to support and then just have "a little" unused space on the larger screens.
It really depends on what you need. Probably the most compatible and advanced solution would be 1.
BUT be aware of the fact that EVERY change on the screen layout has to be duplicated for each xml file following this route!

create xml for each device separately. follow this
second way:
create a parent LinearLayout and pass it to the following method
public static boolean isTabletPC(Context context) {
Display display = ((WindowManager) context
.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if (display.getWidth() >= 1200) {
isTabletPC = true;
return isTabletPC;
} else {
isTabletPC = false;
return isTabletPC;
}
}
public static void fixUiDeviceDependencies(
Activity act, LinearLayout llParent) {
if (Utilities.isTabletPC(act)) {
Display display = ((WindowManager) act
.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
LayoutParams params = (LayoutParams) llParent
.getLayoutParams();
params.width = display.getWidth() / 2;
llParent.setLayoutParams(params);
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Android, activity remembering counting data - android

What you can do is inside the onPause() method store the current value of the timer in the SharedPreferences. When your app resumes in onResume(), you can get that value again, and if it exists start from that.

Related

Error while displaying records from external storage to listview

Android EditText not editable

Why my Android application is eating so much RAM?

TimePicker + CheckBox

How to fit my design to all devices?

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