ExploreActivity.java 文件源码

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_explore);
    iv = (ImageView) findViewById(R.id.search);
    text = (EditText) findViewById(R.id.text);
    searchToBar = (AnimatedVectorDrawable) getResources().getDrawable(R.drawable.anim_search_to_bar);
    barToSearch = (AnimatedVectorDrawable) getResources().getDrawable(R.drawable.anim_bar_to_search);
    interp = AnimationUtils.loadInterpolator(this, android.R.interpolator.linear_out_slow_in);
    duration = getResources().getInteger(R.integer.duration_bar);
    // iv is sized to hold the search+bar so when only showing the search icon, translate the
    // whole view left by half the difference to keep it centered
    offset = -71f * (int) getResources().getDisplayMetrics().scaledDensity;
    iv.setTranslationX(offset);
    iv.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            animate();
        }
    });
}