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,
Related
I tried to display User Input from my main activity to my second activity, but when I typed in and click the send button on the main activity the whole app just crashes. Please help!
crash solved! Thanks a lot!
However, I can't get the message to display on the second activity.
MainActivity.java
package com.example.dell_inspiron.sendmessage;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import static android.R.id.message;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final String message = getResources().getString(R.string.UserInput);
final Button send = (Button) findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
Intent sendMessage = new Intent(MainActivity.this, DisplayMessageActivity.class);
sendMessage.putExtra("UserInput", message);
startActivity(sendMessage);
}
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
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.dell_inspiron.sendmessage.MainActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:text="#string/edit"
android:ems="10"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="15dp"
android:id="#+id/UserInput" />
<Button
android:text="#string/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/UserInput"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="14dp"
android:id="#+id/send"
android:onClick="sendMessage" />
<TextView
android:text="#string/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
android:textSize="18sp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
DisplayMessageActivity.java
package com.example.dell_inspiron.sendmessage;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class DisplayMessageActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_message);
Intent Extra = getIntent();
String textView = Extra.getStringExtra("UserInput");
TextView UserInput = (TextView) findViewById(R.id.UserOutput);
UserInput.setText(textView);
final Button button = (Button) findViewById(R.id.button2);
button.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
launchActivity();
}
});
}
private void launchActivity() {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
}
activity_display_message.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_display_message"
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.dell_inspiron.sendmessage.DisplayMessageActivity">
<Button
android:text="#string/Button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="51dp"
android:id="#+id/button2" />
<TextView
android:text="#string/UserOutput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="91dp"
android:id="#+id/UserOutput" />
<TextView
android:text="#string/enter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="#+id/enter"
android:textSize="18sp"
android:textColor="#android:color/holo_purple" />
</RelativeLayout>
You are passing int, but receive it in String, so your app crashed.
MainActivity
int message = R.string.UserInput;
Intent sendMessage = new Intent(MainActivity.this, DisplayMessageActivity.class);
sendMessage.putExtra("UserInput", message);
DisplayMessageActivity
Bundle Extra = getIntent().getExtras();
String textView = Extra.getString("UserInput");
You should also add
intent.putExtra("UserInput", message);
into launchActivity method.
Solution 1
Change String textView = Extra.getString("UserInput"); to int textView= Extra.getIntExtra("UserInput", 0);
Solution 2
To send the message to your second Activity, you need to use intent inside your MainActivity button click. Modify your code as below.
package com.example.dell_inspiron.sendmessage;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import static android.R.id.message;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String message = getResources().getString(R.string.UserInput);
final Button send = (Button) findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
Intent sendMessage = new Intent(MainActivity.this,DisplayMessageActivity.class);
sendMessage.putExtra("UserInput", message);
startActivity(sendMessage);
}
});
}
}
Solution 3
This line look wrong to me
final String message = getResources().getString(R.string.UserInput);
If you want to get the editText string, this is the way to go
EditText input = (EditText)findViewById(R.id.UserInput); // declare your editText
final String message = input.getText().toString(); // get your input type
You mentioned that you are getting the user input from the MainActivity but i don't see anything like that in your code but you can do the below to pass some value from one activity to another...
Change your second activity like this
Bundle Extra = getIntent().getExtras();
String textView = Extra.getString("UserInput");
to
Intent Extra = getIntent();
String textView = Extra.getStringExtra("UserInput");
and change your MainActivity like this
int message = R.string.UserInput;
to
String message= getResources().getString(R.string.UserInput);
and
final Button send = (Button) findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
launchActivity();
}
});
to
Button send = (Button) findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
startActivity(sendMessage);
}
});
There is issue with your second Activity.You are passing int value in Intents but trying to get String value.
Change it as below:
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
public class DisplayMessageActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_message);
Bundle Extra = getIntent().getExtras();
int textView = Extra.getInt("UserInput");
TextView UserInput = (TextView) findViewById(R.id.UserInput2);
UserInput.setText(textView);
final Button button = (Button) findViewById(R.id.button2);
button.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v) {
launchActivity();
}
});
}
private void launchActivity() {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
}
This is my java class, MainActivity.java.
Basically I'm trying to create a button performing addition on variable i. Everything seems to be correct as far as I learnt until now. I am getting an error message on my emulator saying:
unfortunately myfirstandroidapp stopped working.
Code:
package com.example.android.myfirstandroidapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.util.Log;
public class MainActivity extends AppCompatActivity {
int i = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button button = (Button) findViewById(R.id.addButton);
final TextView txtView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
i++;
txtView.setText("i value is:"+i);
}
});
setContentView(R.layout.activity_main);
}
}
This is my layout.xml
main_activity.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
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.android.myfirstandroidapp.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Your value is:0"
android:id="#+id/textView"
android:textColor="#android:color/black"
android:textStyle="normal|bold"
android:textSize="14dp" />
<Button
android:text="Add One"
android:layout_width="100dp"
android:layout_height="20dp"
android:layout_marginTop="25dp"
android:id="#+id/addButton"
android:background="#android:color/holo_green_dark"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
You need to call setContentView() before initializing any View.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.addButton);
final TextView txtView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
i++;
txtView.setText("i value is:"+i);
}
});
}
i am having problem in text to speech. have this code in java class
package com.techblogon.loginexample;
import java.util.Locale;
import android.os.Bundle;
import android.app.Activity;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.Toast;
public class listenActivity extends Activity implements OnClickListener, OnInitListener {
private TextToSpeech tts;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.categories);
tts = new TextToSpeech(this, this);
findViewById(R.id.button1).setOnClickListener(this);
}
#Override
public void onClick(View v) {
if (tts!=null) {
String text = ((EditText)findViewById(R.id.editText1)).getText().toString();
if (text!=null) {
if (!tts.isSpeaking()) {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}
}
}
#Override
public void onInit(int code) {
if (code==TextToSpeech.SUCCESS) {
tts.setLanguage(Locale.getDefault());
} else {
tts = null;
Toast.makeText(this, "Failed to initialize TTS engine.", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onDestroy() {
if (tts!=null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
}
and xml file has this code
<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"
tools:context=".listenActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TTS Demonstration" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/editText1"
android:layout_centerHorizontal="true"
android:layout_marginTop="43dp"
android:text="Say It" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="77dp"
android:ems="10"
android:text="Hello world!" />
</RelativeLayout>
but issue is when i click button no sound heard on my mobile. does i need any permission for that
any help
Many thanks
In this file i have two Edit text and one textview.I want to sum two number.then result are show in text view.Then i want to store Textview data. please help.i am trying but i am fail.
Activity_main.xml//
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/Edit"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/Edit1"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Add"
android:id="#+id/add"
android:onClick="add"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sub"
android:id="#+id/sub"
android:onClick="sub"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:paddingBottom="30dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/pr"
android:text="Previoues Data"
/>
</LinearLayout>
</LinearLayout>
the java file is
MainActivity.java
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
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.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
EditText Edit,Edit1;
Button add, sub, pr;
TextView view;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Edit = (EditText) findViewById(R.id.Edit);
Edit1 = (EditText) findViewById(R.id.Edit1);
add = (Button) findViewById(R.id.add);
sub = (Button) findViewById(R.id.sub);
pr = (Button) findViewById(R.id.pr);
view = (TextView) findViewById(R.id.view);
Edit.setText("0");
add.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int value1 = Integer.parseInt(Edit.getText().toString());
int value2 = Integer.parseInt(Edit1.getText().toString());
int result = value1 + value2;
view.setText(Integer.toString(result));
// Edit.setText(Integer.toString(result));
SharedPreferences sharedPreferences=getSharedPreferences("Mydata",Context.MODE_PRIVATE);
SharedPreferences.Editor editor=sharedPreferences.edit();
editor.putInt("value",result);
editor.commit();
}
});
sub.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int value1 = Integer.parseInt(Edit.getText().toString());
int value2 = Integer.parseInt(Edit1.getText().toString());
int result = value1 - value2;
view.setText(Integer.toString(result));
Edit.setText(Integer.toString(result));
}
});
pr.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SharedPreferences sharedPreferences=getSharedPreferences("Mydata",Context.MODE_PRIVATE);
// int defaultValue = getResources().getInteger(R.string.saved_high_score_default);
String v=sharedPreferences.getInt("value","");
view.setText(v);
}
});
}
}
update your xml file remove onClick from your button
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Add"
android:id="#+id/add"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sub"
android:id="#+id/sub"
/>
Problem is with your getting value from sharedPreference
String v=sharedPreferences.getInt("value","");
why are you passing string as default value and your
try this String
v = Integer.toString(sharedPreferences.getInt("value",0));
in the layout you´ve got android:onClick="add" there should be a public void add(View v) to handle the event. Do the sum inside that handler.
Please, follow the documentation
http://developer.android.com/reference/android/widget/Button.html and see the :onCLick handling.
In my code,I want to display TextView text name as Toast message.
I do following coding for that .I didn't get the proper text only object of that text I got.
In Toast I want to display the Text please guide me if possible.
Here is my code :
package com.Viewflipper;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import android.widget.ViewFlipper;
public class Viewflipper extends Activity implements OnClickListener {
/** Called when the activity is first created. */
Button next;
Button previous;
ViewFlipper vf;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
vf = (ViewFlipper) findViewById(R.id.ViewFlipper01);
next = (Button) findViewById(R.id.Button01);
previous = (Button) findViewById(R.id.Button02);
next.setOnClickListener(this);
previous.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == next) {
vf.showNext();
Toast.makeText(this,vf.toString(), Toast.LENGTH_SHORT).show();
**//HERE I DIDN'T GET vf.getText().toString();**
}
if (v == previous) {
vf.showPrevious();
}
}
}
**EDITED**
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="#+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<LinearLayout android:id="#+id/LinearLayout03"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<Button android:id="#+id/Button01" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Next"></Button>
<Button android:id="#+id/Button02" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Previous"></Button>
</LinearLayout>
<LinearLayout android:id="#+id/LinearLayout02"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<ViewFlipper android:id="#+id/ViewFlipper01"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<!--adding views to ViewFlipper-->
<TextView android:id="#+id/TextView01" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a10"
android:text="one"></TextView>
<TextView android:id="#+id/TextView02" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a11"
android:text="two"></TextView>
<TextView android:id="#+id/TextView03" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a12"
android:text="three">
</TextView>
<TextView android:id="#+id/TextView04" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a13"></TextView>
<TextView android:id="#+id/TextView05" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a14"></TextView>
<TextView android:id="#+id/TextView06" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#drawable/a15"></TextView>
</ViewFlipper>
</LinearLayout>
</LinearLayout>
Try This:-
package com.Viewflipper;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import android.widget.ViewFlipper;
public class Viewflipper extends Activity implements OnClickListener {
/** Called when the activity is first created. */
Button next;
Button previous;
ViewFlipper vf;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
vf = (ViewFlipper) findViewById(R.id.ViewFlipper01);
next = (Button) findViewById(R.id.Button01);
previous = (Button) findViewById(R.id.Button02);
next.setOnClickListener(this);
previous.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v == next) {
vf.showNext();
Toast.makeText(getApplicationContext(),((TextView) vf.getCurrentView()).getText(), Toast.LENGTH_SHORT).show();
}
if (v == previous) {
vf.showPrevious();
}
}
}
A ViewFliper is an adapter.. you can't just grab it like that, you have to interact with the adapter and get the view and THEN grab the textview in that view.