MainActivity.java 文件源码

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (hasFocus) {
        // test transition
        View v = findViewById(R.id.test_transition);
        TransitionDrawable drawable = (TransitionDrawable) v.getBackground();
        drawable.startTransition(1000);

        // test scale
        View testScale = findViewById(R.id.test_scale);
        ScaleDrawable testScaleDrawable = (ScaleDrawable) testScale.getBackground();
        testScaleDrawable.setLevel(10);

        // test clip
        ImageView testClip = (ImageView) findViewById(R.id.test_clip);
        ClipDrawable testClipDrawable = (ClipDrawable) testClip.getDrawable();
        testClipDrawable.setLevel(8000);

        // test custom drawable
        View testCustomDrawable = findViewById(R.id.test_custom_drawable);
        CustomDrawable customDrawable = new CustomDrawable(Color.parseColor("#0ac39e"));
        testCustomDrawable.setBackgroundDrawable(customDrawable);
    }
}