In my project, im going to make a multiple choice type question. I can select the questions and answer from mysql, however, i cant do the "matching" of the answer between input answer and the data from mysql. I tried some solutions but they doesnt work as well. I need a big help on it. Below are my codes.
the java class that make multiple choice
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.normalmode);
new DataAsyncTask().execute();
}
public void onClick(View v){
inputtext = ((Button) v).getText().toString();
tv3 = (TextView)findViewById(R.id.textView3);
tv3.setText(inputtext);
if(inputtext == tv2.getText().toString()){
playerscore +=5;
} else {
playerscore +=1;
}
score.setText("Scores : " + playerscore);
new DataAsyncTask().execute();
}
class DataAsyncTask extends AsyncTask<String, String, String>{
#Override
protected String doInBackground(String... param) {
String result = DBConnector.executeQuery("SELECT * FROM questions ORDER BY RAND( ) LIMIT 1");
return result;
}
#Override
protected void onPostExecute(String result) {
question = (TextView)findViewById(R.id.textView_question);
fchoice = (Button)findViewById(R.id.Btn_choice1);
schoice = (Button)findViewById(R.id.Btn_choice2);
tchoice = (Button)findViewById(R.id.Btn_choice3);
tv2 = (TextView)findViewById(R.id.textView2);
score = (TextView)findViewById(R.id.textView_score);
try {
JSONArray jsonArray = new JSONArray(result);
JSONObject jsonData = jsonArray.getJSONObject(0);
question.setText(jsonData.getString("q_desc"));
fchoice.setText(jsonData.getString("fchoice"));
schoice.setText(jsonData.getString("schoice"));
tchoice.setText(jsonData.getString("tchoice"));
ans = jsonData.getString("q_ans");
tv2.setText(ans);
} catch(Exception e) {
Log.e("log_tag", e.toString());
}
}
}
}
three buttons are sharing same onClick in xml file by using
android:onClick="onClick"
the current problem i faced is that it always return "false" no matter i pressed which button. also, is there any way to store/pass "previous" async task data?
I have tried using internal storage but it doesnt work as well
EDIT:
my xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.95" >
<TextView
android:id="#+id/textView_score"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/player_score" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.95" >
<TextView
android:id="#+id/textView_question"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="#string/string_question"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="#+id/Btn_choice3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/third_choice"
android:onClick="onClick" />
<Button
android:id="#+id/Btn_choice2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/Btn_submit"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/second_choice"
android:onClick="onClick" />
<Button
android:id="#+id/Btn_choice1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/Btn_choice2"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/first_choice"
android:onClick="onClick" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="TextView" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/textView1"
android:text="TextView" />
</RelativeLayout>
</LinearLayout
textview2 and textview3 are used to test my output and display them as text
try this if(inputtext.equals(tv2.getText().toString())) instead of if(inputtext == tv2.getText().toString())
becasue the == operator checks to see if the two strings are exactly the same object.
The .equals() method will check if the two strings have the same value.
Related
I have a little problem in my android app. I want to put a word in an AutoCompleteTextView and then jump to a specific Activity(depend on the word that the user gave).
The problem is that, when i give a specific word, the program does not correspond with the correct answer as expected but returns a wrong toast message. However with the log that i put i see the correct answer. I think that the solution is silly but i stuck and need to solve this.
the code:
Activity.java
public class paralActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_paral);
final String [] temp = {"one","two","three"};
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
actv.clearListSelection();
final RelativeLayout myRelative = (RelativeLayout) findViewById(R.id.find);
myRelative.setVisibility(View.INVISIBLE);
ImageView myImage = (ImageView) findViewById(R.id.aktoploika);
myImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(paralActivity.this, topParalActivity.class);
startActivity(intent);
}
});
ImageView myOtherImage = (ImageView) findViewById(R.id.aeroporika);
myOtherImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
myRelative.setVisibility(View.VISIBLE);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(paralActivity.this, android.R.layout.select_dialog_item, temp);
//Getting the instance of AutoCompleteTextView
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
actv.setThreshold(1);//will start working from first character
actv.setAdapter(adapter);//setting the adapter data into the AutoCompleteTextView
actv.setTextColor(Color.RED);
ImageView findBeach = (ImageView) findViewById(R.id.find_beach);
findBeach.setOnClickListener(new View.OnClickListener() {
#Override
** public void onClick(View view) {
AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
String choice = actv.getText().toString();
Log.i("Answer",choice);
if (choice == "one"){
Intent firstIntent = new Intent(paralActivity.this, nauagioActivity.class);
startActivity(firstIntent);
}else if (choice == temp[1]){
Intent secondIntent = new Intent(paralActivity.this, gerakasActivity.class);
startActivity(secondIntent);
}else if (choice == temp[2]){
Intent thirdIntent = new Intent(paralActivity.this, limnionasActivity.class);
startActivity(thirdIntent);
}else{
Toast.makeText(paralActivity.this,"wrong",Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
}
To help u understand, in this activity a have 2 imageViews. When the user presses the second, a relativeLayout appears (with an AutoCompleteTextView and a button inside). After the user writes the word when presses the button it must go to the specific activity. I declared a String Array (temp[3]) with three words inside and 3 activities for each of the words.
The problem starts in the last onclick method that i put ** . Every time i put a correct word from the Array i take the Toast message but in the log i see the correct.
here is Activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_paral"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/main"
android:scaleX="2"
tools:context="com.example.billy.zakynthosapp.paralActivity">
<TextView
android:id="#+id/categories"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_below="#+id/welcome"
android:text="#string/categories"
android:textAlignment="center"
android:layout_centerHorizontal="true"
android:layout_marginTop="30dp"
android:textSize="11sp"
android:textStyle="bold"
android:textColor="#color/welcome"
android:textAllCaps="true"/>
<ImageView
android:id="#+id/aktoploika"
android:layout_centerHorizontal="true"
android:layout_width="130dp"
android:layout_height="50dp"
android:layout_below="#id/categories"
android:layout_marginTop="35dp"
android:scaleType="centerCrop"
android:src="#drawable/par1" />
<TextView
android:id="#+id/aktoploika_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/aktoploika"
android:layout_alignTop="#+id/aktoploika"
android:layout_alignRight="#+id/aktoploika"
android:layout_alignBottom="#+id/aktoploika"
android:layout_margin="1dp"
android:gravity="center"
android:text="#string/paralies"
android:textSize="22sp"
android:textColor="#color/categories"
android:textStyle="bold"/>
<ImageView
android:id="#+id/aeroporika"
android:layout_centerHorizontal="true"
android:layout_width="130dp"
android:layout_height="50dp"
android:layout_below="#id/aktoploika"
android:layout_marginTop="35dp"
android:scaleType="centerCrop"
android:src="#drawable/par2" />
<TextView
android:id="#+id/aeroporika_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/aeroporika"
android:layout_alignTop="#+id/aeroporika"
android:layout_alignRight="#+id/aeroporika"
android:layout_alignBottom="#+id/aeroporika"
android:layout_margin="1dp"
android:gravity="center"
android:text="#string/search"
android:textSize="22sp"
android:textColor="#color/categories"
android:textStyle="bold" />
<RelativeLayout
android:id="#+id/find"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/aeroporika"
android:layout_marginTop="50dp"
android:layout_centerInParent="true"
android:background="#color/categories"
android:scaleX="0.5">
<TextView
android:id="#+id/textView_1"
android:layout_width="wrap_content"
android:gravity="center_vertical"
android:textSize="20sp"
android:layout_centerHorizontal="true"
android:text="#string/find_paral"
android:textColor="#android:color/black"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/find_beach"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:layout_marginLeft="200dp"
android:src="#drawable/find"
android:onClick="find"/>
<AutoCompleteTextView
android:id="#+id/autoCompleteTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/textView_1"
android:layout_marginTop="10dp"
android:ems="10"
android:text="">
<requestFocus />
</AutoCompleteTextView>
</RelativeLayout>
Can anyone help me with this?
Thanks a lot!
Try choice.equals("one") instead of choice == "one"
I am in a weird situation in my existing project. In my project i want to inflate one layout over the other as a stack dynamically. At present in my project i managed to show the layouts one below the other vertically by appending them, this approach has been chosen by me because even though i am trying to show it as stack only one image is appearing at the front during runtime instead of a bunch. In order to understand my problem please go through the following image links and code
desired result
acquired_result_when_tried_to_acheive_desired_result
approached way
Parent layout:
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/imagegallery"
android:orientation="vertical"></LinearLayout>
child layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="#+id/relativeImage"
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_below="#+id/rl1"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="15dp" >
<RelativeLayout
android:id="#+id/parent"
android:layout_width="wrap_content"
android:layout_height="250dp"
android:orientation="vertical" >
<Button
android:id="#+id/left1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:background="#drawable/close" />
<Button
android:id="#+id/right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:background="#drawable/right" />
<ImageView
android:id="#+id/image"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:adjustViewBounds="true"
android:background="#drawable/deelpizza"
android:paddingBottom="15dp"
android:paddingEnd="0dp"
android:paddingStart="0dp"
android:scaleType="fitCenter" />
<RelativeLayout
android:id="#+id/left"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignTop="#+id/image"
android:background="#drawable/text_bg" >
<ImageView
android:id="#+id/imageprew"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:layout_marginTop="15dp"
android:background="#drawable/icon_3" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="#+id/imageprew"
android:text="This is an exclusive Deel good for today only clime this deel before its close!"
android:textColor="#FFFFFF" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="15dp"
android:layout_below="#+id/imageprew" >
</RelativeLayout>
</RelativeLayout>
<!--
<Button
android:id="#+id/left"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_alignParentLeft="true"
android:background="#drawable/text_bg"
android:layout_alignTop="#+id/image"
/>
-->
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/relativeDetails"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/relativeImage"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="#drawable/rectangle" >
<TextView
android:id="#+id/locationText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/descText"
android:layout_marginLeft="10dp"
android:layout_marginTop="8dp"
android:text="woodfire pizza, Los Gatos CA\nLimited time offer, redeemable today only."
android:textColor="#000000" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="10dp"
android:layout_below="#+id/locationText" />
<TextView
android:id="#+id/descText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="8dp"
android:text="1 large, 2 topping pizza"
android:textColor="#000000"
android:textSize="20dp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:text="$15"
android:textColor="#FF0000"
android:textSize="25dp" />
</RelativeLayout>
JavaCode:
private void addImagesToThegallery() {
LinearLayout imageGallery = (LinearLayout)findViewById(R.id.imagegallery);
//imageGallery.setPadding(0, 0, 0, 30);
LayoutInflater layoutInfralte=(LayoutInflater)getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
List views=new ArrayList();
View view;
for(int j=0; j<=5; j++)
{
view=layoutInfralte.inflate(R.layout.newdeels, null);
view.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
views.add(view);
}
for(int i = 0; i<views.size(); i++)
{
imageGallery.addView((View) views.get(i));
}
Please go through my code and let me know where am i going wrong and let me know if i am unclear anywhere
Change the margin top to make views come down a bit
for(int j=0; j<=5; j++)
{
view=layoutInfralte.inflate(R.layout.newdeels, null);
LinearLayout.LayoutParams lp=new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
lp.setMargins(left,5*j, right, bottom);
view.setLayoutParams(lp);
views.add(view);
}
for(int i = 0; i<views.size(); i++)
{
imageGallery.addView((View) views.get(i));
}
Checkout following
Github : Material Recent Layout
Usage
RecentsList recents = (RecentsList) findViewById(R.id.recents);
recents.setAdapter(new RecentsAdapter() {
#Override
public String getTitle(int position) {
return "Item "+position;
}
#Override
public View getView(int position) {
ImageView iv =new ImageView(RecentsActivity.this);
iv.setImageResource(R.drawable.mazda);
iv.setBackgroundColor(0xffffffff);
return iv;
}
#Override
public Drawable getIcon(int position) {
return getResources().getDrawable(R.mipmap.ic_launcher);
}
#Override
public int getHeaderColor(int position) {
return colors[random.nextInt(colors.length)];
}
#Override
public int getCount() {
return 10;
}
}
Note
You need to modify as per your requirement.
Try FrameLayout in your parent layout. Set different margins in child views to achive an effect of stack.
Child views are drawn in a stack, with the most recently added child on top
check out : github.com/kikoso/Swipeable-Cards
As per your response :
hi thank you for your response ur response actually worked. But now i am dealing with another situation where-in i would like to update details based on swipe for eg: if a card is swiped right it should be gestured as like where as if a card is swiped left it should be gestured as dislike so how to actually code these swipe gestures can you please help me out
#ashwin for that you should have a like and dislike drawable or a custom view.
card.setOnCardDimissedListener(new CardModel.OnCardDismissedListener() {
#Override
public void onLike() {
Log.d("Swipeable Card", "I liked it");
}
#Override
public void onDislike() {
Log.d("Swipeable Card", "I did not liked it");
}
});
Use above snippet to show or hide the view of like or dislike in respective methods that is onLike() and onDislike().
Edit 1:
I figured out the problem what you are facing, If you are simply implementing the Sample Code. Then it clearly shows that CardContainer has SimpleCardStackAdapter as adapter and CardModel are added to it using new operator. Except the last element of CardModel that is added separately and cardModel Listener is applied on last element only. If you want to apply it on all elements. Then you should have to add the elements to SimpleCardStackAdapter by ArrayList of CardModel.
Im having some issues, i have two Groups of Radiobuttons in my XML which has handling in an activity. It just crashes with nullpoint exception on line 48:
int languangeId = languageGroup.getCheckedRadioButtonId();
I have set a "default" checked button in the XML to one of the buttons in the buttongroup,
So why doesnt it get an valid value?:(
public class FirstTimeSelectMenu extends Activity{
private RadioGroup languageGroup;
private RadioGroup storageGroup;
private Button okButton;
private String getStorage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.first_time_run);
languageGroup = (RadioGroup)this.findViewById(R.id.languageGroup);
storageGroup = (RadioGroup)this.findViewById(R.id.storageGroup);
okButton = (Button)findViewById(R.id.okBtn);
okButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int languangeId = languageGroup.getCheckedRadioButtonId();
int storageId = storageGroup.getCheckedRadioButtonId();
RadioButton languageb = (RadioButton)findViewById(languangeId);
RadioButton storageb = (RadioButton)findViewById(storageId);
if(languageb.equals("Norwegian")){
//Need to fix this!
}
if(languageb.equals("English")){
//Need to fix this!
}
if(storageb.equals("SD Card")){
String sdStoragePath = Environment.getExternalStorageDirectory().toString() + "/PictureTalk/";
FileInteraction fi = new FileInteraction();
fi.firstTimeFillPath(getResources(), "PictureTalk/Food", sdStoragePath +"PictureTalk/Food");
fi.firstTimeFillPath(getResources(), "PrivatePictures", Environment.getExternalStorageDirectory().toString() +"PrivatePictures");
Intent intent = new Intent(getApplicationContext(),MainMenuActivity.class);
intent.putExtra("dataStorePath",sdStoragePath);
startActivity(intent);
}
}
});
}}
My XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="#+id/languagetext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="236dp"
android:text="Choose language" />
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="#+id/languagetext"
android:layout_alignRight="#+id/languagetext"
android:layout_below="#+id/languageGroup">
<RadioButton
android:id="#+id/norwegianRadioBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="Norwegian" />
<RadioButton
android:id="#+id/englishRadioBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="English" />
</RadioGroup>
<TextView
android:id="#+id/internal_sd"
android:layout_width="464dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="236dp"
android:text="Do you want to store the data to:" />
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:id="#+id/storageGroup">
<RadioButton
android:id="#+id/sdcardRadioBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:checked="true"
android:text="SD card" />
<RadioButton
android:id="#+id/internalRadioBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="Internal storage" />
</RadioGroup>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ok"
android:id="#+id/okBtn"
android:layout_gravity="bottom" />
To start off with, what element is assigned the id "#+id/languageGroup" since it doesn't appear to be declared in your XML
When I first launch my app everything displays and works correctly but when I close and reopen it a spinner and button that sit next to each other at the top of my relative layout are only about half of their usual height and the spinner is unusable. If I click it nothing drops down (but the button works as usual). Other elements below the spinner and but display as usual.
I spent half the day googling and playing with the app code and layout XML and have made little to no progress.
Anyone got a clue as to what could be causing this? It only happens on subsequent runs of the app.
Here is the layout 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" >
<Spinner
android:id="#+id/namespinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#+id/button1" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/namespinner"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/namespinner"
android:onClick="onEditButtonPressed"
android:text="#string/dob_edit" />
<TextView
android:id="#+id/secondsDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="36dp"
android:text="#string/seconds"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="48sp" />
<TextView
android:id="#+id/minutesDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/secondsDisplay"
android:layout_centerHorizontal="true"
android:layout_marginBottom="28dp"
android:text="#string/minutes"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="48sp" />
<TextView
android:id="#+id/hoursDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_above="#+id/minutesDisplay"
android:layout_marginBottom="27dp"
android:text="#string/hours"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="48sp" />
<TextView
android:id="#+id/hourstext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/hoursDisplay"
android:layout_alignBottom="#+id/hoursDisplay"
android:layout_alignLeft="#+id/daystext"
android:text="#string/hours_lable"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/dayDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/hoursDisplay"
android:layout_centerHorizontal="true"
android:layout_marginBottom="22dp"
android:text="#string/days"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="48sp" />
<TextView
android:id="#+id/daystext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/dayDisplay"
android:layout_toRightOf="#+id/namespinner"
android:text="#string/days_lable"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/minutesText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/minutesDisplay"
android:layout_alignBottom="#+id/minutesDisplay"
android:layout_alignLeft="#+id/hourstext"
android:text="#string/minutes_lable"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="#+id/secondstext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/secondsDisplay"
android:layout_alignBottom="#+id/secondsDisplay"
android:layout_alignLeft="#+id/minutesText"
android:text="#string/seconds_lable"
android:textAppearance="?android:attr/textAppearanceSmall" />
This should be the relevant parts of the main activity that call it:
public class MainActivity extends Activity {
static Spinner nameSpinner;
ArrayAdapter nameAdapter;
static ArrayList nameList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onResume() {
super.onResume();
// get spinner and init array if needed
if (nameList == null) {
nameSpinner = (Spinner) findViewById(R.id.namespinner);
nameList = new ArrayList();
nameList.add("( Add )");
}
// populate spinner
nameAdapter = new ArrayAdapter(this,
android.R.layout.simple_spinner_dropdown_item, nameList);
nameSpinner.setAdapter(nameAdapter);
// listen for events/selections on the spinner
nameSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView parentView,
View selectedItemView, int position, long id) {
// read state
}
}
#Override
public void onNothingSelected(AdapterView parentView) {
// do I want to do anything here?
}
});
}
}
Edited to clean up the code display and add the class def. and class variables.
You have to insert the code wrote in the onresume method in oncreate method!
Setting the spinner in an if statement that didn't really have anything to do with setting the spinner was the cause of the problem. By changing this:
if (nameList == null) {
nameSpinner = (Spinner) findViewById(R.id.namespinner);
nameList = new ArrayList();
nameList.add("( Add )");
}
to
nameSpinner = (Spinner) findViewById(R.id.namespinner);
if (nameList == null) {
nameList = new ArrayList();
nameList.add("( Add )");
}
got it sorted.
A good nights sleep and fresh eyes where all that were needed. :P
I'm new to android, and I'm writing a program use bluetooth, so I use another thread and handler to update UI. When I has only one TextView, it works, but when I add more textview, it doesn't work.
My OnCreate
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvSpeed = (TextView) findViewById(R.id.SpeedView02);
tvHeart = (TextView) findViewById(R.id.HeartRate02);
tvGrade = (TextView) findViewById(R.id.Grandient02);
btnConnect = (Button) findViewById(R.id.BtnConnect);
btAdapter = BluetoothAdapter.getDefaultAdapter();
if (btAdapter == null) {
Toast.makeText(this,
"Bluetooth is not supported on this hardware platform",
1000).show();
onDestroy();
}
}
My Handler
private final Handler handler = new Handler() {
private int current;
public void handleMessage(Message msg) {
current = (Integer) msg.obj;
switch(msg.what)
{
case 1:
tvSpeed.setText(current + "Km/h");
break;
case 2:
tvHeart.setText(current + "Bps");
break;
default:
break;
}
tvGrade.setText(0); // if I remove this, it works.
}
};
my main.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" >
<LinearLayout android:id="#+id/LinearLayout01"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<TextView android:id="#+id/SpeedView01" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="速度："></TextView>
<TextView android:id="#+id/SpeedView02" android:layout_width="70dip"
android:layout_height="wrap_content"
android:text=""></TextView>
<TextView android:id="#+id/HeartRate01" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="心率："></TextView>
<TextView android:id="#+id/HeartRate02" android:layout_width="70dip"
android:layout_height="wrap_content"
android:text=""></TextView>
<TextView android:id="#+id/Gradient01" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="坡度："></TextView>
<TextView android:id="#+id/Grandient02" android:layout_width="70dip"
android:layout_height="wrap_content"
android:text=""></TextView>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="match_parent" android:layout_height="wrap_content" >
<Button android:id="#+id/BtnConnect" android:layout_width="match_parent"
android:layout_height="wrap_content" android:text="Connect"
android:layout_weight="1.0" android:onClick="onConnectButtonClicked" />
<Button android:id="#+id/BtnQuit" android:layout_width="match_parent"
android:layout_height="wrap_content" android:text="Exit"
android:layout_weight="1.0" android:onClick="onQuitButtonClicked" />
</LinearLayout>
</LinearLayout>
setText(0);
You do realize setText(int) is a function that expects a valid R.string.XXX value...
Clearly, 0 will never be a valid value, it's prolly throwing a "Resource Not found" exception.
Instead of handler, i would suggest you to use AsyncTask which is known as Painless Threading in android.
Inside doInBackground(), implement all your background task
once you are having values, you can make UI updation inside the onPostExecute() method.