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Android

Posted by partha chakraborty
partha chakraborty
10,562 Points

My version of the funfacts app not running on my Sony LT26i

I have trying to make a different version of the Funfacts app but instead of showing facts and changing background color, my app changes the background image on clicking the 'Change Background' button.

The app runs on the emulator but not on my mobile.

Here is my 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" tools:context=".MainActivity" android:background="@drawable/my_img1" android:id="@+id/bgImage" > <Button

    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Change Background"
    android:id="@+id/button"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true" />

</RelativeLayout>

And here is MainActivity.java:

final int[] img = {R.drawable.my_img2,R.drawable.my_img3};

    final RelativeLayout background  = (RelativeLayout) findViewById(R.id.bgImage);
    Button button = (Button) findViewById(R.id.button);


    View.OnClickListener listener = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
        Random randomGen = new Random();
        int randomNumber = randomGen.nextInt(img.length);
            int image = img[randomNumber];
        background.setBackgroundResource(image);