I have a BottomSheetBehaviour in my layout, and it works absolutely fine. The problem is, that whenever user clicks on back button, it becomes invisible(or gone). How can I prevent it to be non-dissmissable?
create a layout for your bottom sheet as:
<androidx.core.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="16dp"
app:behavior_peekHeight="260dp"//change according to your need
app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
//your design here
</LinearLayout>
</androidx.core.widget.NestedScrollView>
include this layout in your main layout file
<include layout="#layout/layout_name" />
now you can use your bottom sheet in your activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_name);
View bottomSheet = findViewById(R.id.bottomSheet);
//add behaviour as
BottomSheetBehavior<View> bottomSheetBehavior =BottomSheetBehavior.from(bottomSheet);
//access your views inside bottomSheet as
TextView textView = bottomSheet.findViewById(R.id.textViewId);
}
Just override onCancel() or onDismiss().
#Override
public void onCancel(DialogInterface dialog) {
// super.onCancel(dialog); // comment this out
Toast.makeText(MainApp.get(), "CANCEL REQUESTED", Toast.LENGTH_SHORT).show();
}
Or override onBackPressed in onCreateDialog function when you're crating the dialog
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
return new Dialog(getActivity(), getTheme()){
#Override
public void onBackPressed() {
Toast.makeText(MainApp.get(), "CANCEL REQUESTED", Toast.LENGTH_SHORT).show();
}
};
}
Related
Hello my goal is to make my custom view (ViewCircleOfInterest.java) receiving onClick. Now every time I click onClickListener on ViewCircleOfInterest.java is not called.
My interesting part of layout looks like that:
my_layout.xml
<FrameLayout
android:id="#+id/camera_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/rl"
android:layout_alignParentTop="true"
android:background="#bbb">
<abc.x.y.ViewCircleOfInterest
android:id="#+id/view_circle_of_interest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</FrameLayout>
I have FrameLayout on my layout and I added view (SurfaceView - CameraPreview.java) to it like that
MyActivity.java
rootView = findViewById(android.R.id.content).getRootView();
viewCircleOfInterest = rootView.findViewById(R.id.view_circle_of_interest);
viewCircleOfInterest.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(NewWayMeasurementActivity.this, "circle a", Toast.LENGTH_SHORT).show();
}
});
(...)
((FrameLayout) rootView.findViewById(R.id.camera_view)).addView(cameraPreview);
(...)
#Override
public boolean dispatchTouchEvent(MotionEvent event) {
return super.dispatchTouchEvent(event);
}
On CameraPreview.java in my init() method I do like that:
(...)
viewCircleOfInterest = ((NewWayMeasurementActivity)activity).viewCircleOfInterest;
viewCircleOfInterest.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "circle aa", Toast.LENGTH_SHORT).show();
}
});
I also set onClickListener on my ViewCircleOfInterest.java
public ViewCircleOfInterest(SurfaceView surfaceView) {
super(surfaceView.getContext());
this.surfaceView = surfaceView;
setOnClickListener(this);
}
#Override
public void onClick(View v) {
Toast.makeText(surfaceView.getContext(), "circle aaa", Toast.LENGTH_SHORT).show();
}
But unfortunately non of this method works, I still cannot receive onclicks from my custom view. How to solve that? I hope my question and code is understandable.
Make these changes in your code and check if it works.
my_layout.xml
<FrameLayout
android:id="#+id/camera_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/rl"
android:layout_alignParentTop="true"
android:background="#bbb">
<abc.x.y.ViewCircleOfInterest
android:id="#+id/view_circle_of_interest"
android:layout_width="wrap_content"
android:clickable="true"
android:layout_height="wrap_content"/>
</FrameLayout>
MyActivity.java
((FrameLayout)rootView.findViewById(R.id.camera_view)).addView(cameraPreview,0);
Here we are adding cameraPreview at 0 index so your custom view is on top now and that should receive clicks.
I am building an music player. Whenever the user will click on a ImageView, a dialog will come. The dialog will have a switch in it. I wanted to say that whenever the user switches on the switch to on, I wanted to change the ContentView of MainActivity.java to a custom layout file. How can I do that.
Any suggestions would be accepted..
Thanks
I would add a callback to your Dialog that you simply invoke to set your content, something like
class MyDialog(val switchChangedCallback: (Boolean) -> Unit) : DialogFragment() ...
When you change the switch, invoke the callback and handle the result in the Activity:
val dialog = MyDialog(switchChangedCallback = { isOn ->
if (isOn) {
setContentView(R.layout.abc)
} else {
setContentView(R.layout.def)
}
})
dialog.show(supportFragmentManager, MyDialog::class.java.name)
You may need to check that the callback survives app rotation!
You can try below code...
Dialogue :
Dialog dialogue = new Dialog(MainActivity.this);
dialogue.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialogue.setCancelable(false);
dialogue.setContentView(R.layout.dialogue);
Switch mySwitch = (Switch) dialogue.findViewById(R.id.MYSWITCH);
Button btnClose = (Button) dialogue.findViewById(R.id.CLOSEBTN);
mySwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
setContentView(R.layout.layout1);
}
else{
setContentView(R.layout.layout2);
}
}
});
btnClose.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialogue.dismiss();
}
});
dialogue.show();
dialogue.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:padding="16dp"
android:orientation="vertical"
android:layout_height="match_parent">
<Switch
android:id="#+id/MYSWITCH"
android:text="Change Layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:id="#+id/CLOSEBTN"
android:text="Close"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
as your question says you need a switch inside dialogue , so we need to create a custom dialogue layout and apply it to dialogue !
I'm new to Android development so please bear with me.
I have the code inside an activity that implements qr scanning. Basically there is an activity before this segments of codes, but its just clicking of a button to go here. and whenever I do that, my app crashes and that is the error that returns. The idea of the app is once the user click the button, it will first display a qr scanner, once it has been scanned, it will now call this XML File
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_scan"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="#drawable/scanbg"
tools:context=".ScanActivity">
<RelativeLayout
android:layout_width="300dp"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginLeft="25dp"
android:layout_marginRight="25dp"
android:layout_marginTop="62dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Question Here"
android:textSize="22dp"
android:id="#+id/questionhere"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/questionhere"
android:hint="Answer"
android:id="#+id/answerhere"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Correct or not indicator"
android:id="#+id/indicator"
android:layout_below="#id/answerhere"
android:textSize="18dp"/>
<!--this textview will be programmed to be changed as correct or not-->
<!--if answer == correct then "correct!" else "wrong answer"-->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Point(s):"
android:id="#+id/userpoints"
android:layout_below="#id/indicator"
android:textSize="18dp"/>
<Button
android:layout_marginTop="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/userpoints"
android:layout_alignParentEnd="true"
android:text="Go"
android:textSize="14dp"
android:background="#B0DAD5"
android:id="#+id/gosagot"/>
</RelativeLayout>
and Here is the java file
public class ScanActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler{
Button validateanswer;
ProgressDialog progress;
private ZXingScannerView mScannerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan);
mScannerView = new ZXingScannerView(this);
setContentView(mScannerView);
mScannerView.setResultHandler(this);
mScannerView.startCamera();
validateanswer = (Button)findViewById(R.id.gosagot); //Im having error here
validateanswer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
progress.setMessage("Connecting...");
progress.setCancelable(false);
progress.show();
EditText theanswer = (EditText)findViewById(R.id.answerhere);
String sagotdito = theanswer.getText().toString();
RequestFactory.confirmanswer(ScanActivity.this, sagotdito, new RequestCallback<Boolean>() {
#Override
public void onSuccess(Boolean response) {
runOnUiThread(new Runnable() {
#Override
public void run() {
finish();
//load new question
progress.dismiss();
}
});
}
#Override
public void onFailed(String message) {
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(ScanActivity.this, "Wrong Answer. Try Again!", Toast.LENGTH_LONG).show();
progress.dismiss();
}
});
}
});
}
});
}
continuation...
#Override
protected void onPause() {
super.onPause();
mScannerView.stopCamera();
}
#Override
public void handleResult(final Result result) {
Log.w("handleResult",result.getText());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final EditText answertoQuestion = new EditText(this);
answertoQuestion.setHint("answer");
builder.setTitle("Scan Result");
builder.setMessage(result.getText());
builder.setPositiveButton("Go", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
setContentView(R.layout.activity_scan);
TextView j = (TextView)findViewById(R.id.questionhere);
EditText k = (EditText)findViewById(R.id.answerhere);
String n = k.getText().toString();
j.setText(result.getText());
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
}
please help me.
If you check the examples of ZXing...
In your activity XML, you can add a region for the QR scanner.
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
Grab that and add the scanner view there.
public class ScannerActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler {
private ZXingScannerView mScannerView;
#Override
public void onCreate(Bundle state) {
super.onCreate(state);
setContentView(R.layout.activity_simple_scanner);
ViewGroup contentFrame = (ViewGroup) findViewById(R.id.content_frame);
mScannerView = new ZXingScannerView(this);
contentFrame.addView(mScannerView);
}
Your error is that you can't findViewById on your button when you replaced the content view with some other view that doesn't have the ID you want to find.
And even if you "switched" findViewById and setContentView around, your code wouldn't crash, but you would no longer have a button in the content view, so having the click action would be pointless.
The problem is that the button is a part of activity_scan and you set setContentView(mScannerView) to other layout.You are bound to get this error as the activity does not have a refernce to the view(button) you are refering.
What you can do is make the mScannerView a part of your main layout and then get it with findViewById();
i have trouble to call layout programmatically, i try in xml using include and its work
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:id="#+id/btnTes"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/LL1"
android:orientation="vertical">
<include layout="#layout/extend">
</include>
<include layout="#layout/extend">
</include>
</LinearLayout>
but i want create it programmatically
this is my extend XML :
<TextView
android:text="TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView" />
<TextView
android:text="TextView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView2" />
and this is my java :
public class MainActivity extends AppCompatActivity {
Button btnTes;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ViewGroup tes = (ViewGroup) findViewById(R.id.LL1);
btnTes = (Button) findViewById(R.id.btnTes);
final View extend = LayoutInflater.from(this).inflate(R.layout.extend,null);
btnTes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(MainActivity.this, "KLIk", Toast.LENGTH_SHORT).show();
tes.addView(extend);
}
});
}
}
when i click btnTes
for the first clicked its ok, but when i click it again my program just force close. This is my error
FATAL EXCEPTION: main
Process: com.example.siwonhansamu.test, PID: 3796
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
Thanks
You can't add the same view to multiple parents.
You have to do a copy of the view if you want it multiple times. You could do like this :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ViewGroup tes = (ViewGroup) findViewById(R.id.LL1);
btnTes = (Button) findViewById(R.id.btnTes);
btnTes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(MainActivity.this, "KLIk", Toast.LENGTH_SHORT).show();
final View extend = LayoutInflater.from(view.getContext()).inflate(R.layout.extend, tes, false);
tes.addView(extend);
}
});
}
when i click btnTes for the first clicked its ok, but when i click it
again my program just force close.
that's the expected behavior. A View's instace can have only one parent. When you press the button for the second time extend has already a parent (tes), and you cannot call addView again on that instance. The quick fix is to move
final View extend = LayoutInflater.from(this).inflate(R.layout.extend,null);
into onClick. This way, every time you press on the Button, a new instance is created.
I am currently developing an android application in which purpose is to play a large variety of every-day sounds on click.
I have 3 activities : home, animaux and transports.
Home is fine, animaux is fine (it plays all the sounds without any problems).
But I want to integrate admob on Transports acivity. Ads display well, but when I cluck on the sounds buttons, nothing happens. If you could help me understand my mistake and how to fix it, it would be very nice !
Here is transports.java
public class Transports extends Activity {
private AdView adView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_transports);
// Create the adView
adView = new AdView(this, AdSize.BANNER, "xxxxxx"
// Lookup your LinearLayout assuming it's been given
// the attribute android:id="#+id/mainLayout"
LinearLayout layout = (LinearLayout)findViewById(R.id.linearLayout1);
// Add the adView to it
layout.addView(adView);
// Initiate a generic request to load it with an ad
adView.loadAd(new AdRequest());
}
#Override
public void onDestroy() {
if (adView != null) {
adView.destroy();
}
super.onDestroy();
}
private MediaPlayer mPlayer = null;
/** Called when the activity is first created. */
public void onCreate1(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_transports);
Button btn_sound_sncf2 = (Button) findViewById(R.id.sncfnew);
btn_sound_sncf2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
playSound(R.raw.sncf2);
}
});
Button btn_sound_sncf1 = (Button) findViewById(R.id.sncf1);
btn_sound_sncf1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
playSound(R.raw.sncf1);
}
});
}
#Override
public void onPause() {
super.onPause();
if(mPlayer != null) {
mPlayer.stop();
mPlayer.release();
}
}
private void playSound(int resId) {
if(mPlayer != null) {
mPlayer.stop();
mPlayer.release();
}
mPlayer = MediaPlayer.create(this, resId);
mPlayer.start();
}
}
And here is the transports.xml code :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="fill_vertical"
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=".Transports" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:gravity="left"
android:orientation="vertical" >
<com.google.ads.AdView
android:id="#+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="xxxxx"
ads:loadAdOnCreate="true"
ads:testDevices="TEST_EMULATOR, TEST_DEVICE_ID"
android:gravity="top" >
</com.google.ads.AdView>
<Button android:id="#+id/sncfnew"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/sncf1"
android:layout_below="#+id/sncf1"
android:layout_marginTop="38dp"
android:text="#string/sncfnew" />
<Button android:id="#+id/sncf1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/linearLayout1"
android:layout_below="#+id/linearLayout1"
android:text="#string/sncf1" />
</LinearLayout>
</RelativeLayout>
I wonder if the problem isn't in my xml file : I have a lot of difficulties to maker a clear interface with the linearlayout required by admob.
You aren't actually setting the listeners. You have that code in a method:
public void onCreate1(Bundle savedInstanceState) {
that is never called. Move that code to the actual onCreate() method and it should work fine.