Pranesh Sahu Pranesh Sahu - 4 months ago 21
Android Question

Dialog box using fragment shows error

I have just started implementing the DialogFragment in Android and got stuck since it is throwing an error that i'm posting here with other java files.

error:

FATAL EXCEPTION: main
Process: com.example.cisystem3.dialogfragment, PID: 3519
android.util.AndroidRuntimeException: requestFeature() must be called before adding contentvat com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:302) at com.android.internal.app.AlertController.installContent(AlertController.java:233)
at android.app.AlertDialog.onCreate(AlertDialog.java:356)
at android.app.Dialog.dispatchOnCreate(Dialog.java:373)
at android.app.Dialog.show(Dialog.java:274)
at android.app.DialogFragment.onStart(DialogFragment.java:490)
at android.app.Fragment.performStart(Fragment.java:2077)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:922)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
at android.app.BackStackRecord.run(BackStackRecord.java:834)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1452)
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:447)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)


Here is my DialogFragment onCreateDialog method

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("My Dialog Box");
builder.setMessage("Do you like this dialog");
builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "No Clicked", Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "Yes Clicked", Toast.LENGTH_SHORT).show();
}
});
Dialog dialog = builder.create();

return dialog;
}


MainActivity click Listener

btnClick=(Button)findViewById(R.id.button);
btnClick.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
FragmentManager manager=getFragmentManager();
BlankFragment myFragment=new BlankFragment();
myFragment.show(manager,"My Dialog");
}
});

Answer

Write this function in your MainActivity

private void openDialog() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("My Dialog Box");
    builder.setMessage("Do you like this dialog");
    builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(MainActivity.this, "No Clicked", Toast.LENGTH_SHORT).show();
        }
    });
    builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Toast.makeText(MainActivity.this, "Yes Clicked", Toast.LENGTH_SHORT).show();
        }
    });
    builder.show();
}

And then call it as below

btnClick=(Button)findViewById(R.id.button);
    btnClick.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            openDialog();
        }
    });

You don't need the DialogFragment. Remove the DialogFragment code entirely.