android学习笔记之下拉动态弹出图标菜单的实现

private int res[] = {R.id.i0, R.id.i1, R.id.i2, R.id.i3, R.id.i4, R.id.i5};

animator.setInterpolator(new BounceInterpolator());

<FrameLayout 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"
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="com.example.animatortest3.MainActivity" >

<ImageView
android:id="@+id/i0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<ImageView
android:id="@+id/i1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<ImageView
android:id="@+id/i2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<ImageView
android:id="@+id/i3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<ImageView
android:id="@+id/i4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

<ImageView
android:id="@+id/i5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />

</FrameLayout>

<span style="font-size:14px;">public class MainActivity extends Activity {

private int res[] = {R.id.i0, R.id.i1, R.id.i2, R.id.i3, R.id.i4, R.id.i5};
private List<ImageView> imageList = new ArrayList<ImageView>();
private boolean flag = true;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
for(int i=0;i<res.length;i++){
ImageView image = (ImageView) findViewById(res[i]);
image.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()){
case R.id.i5:
if(flag){
startAnim();
}
else{
closeAnim();
}
break;
default:

}
}

});
imageList.add(image);
}

}

protected void closeAnim() {
// TODO Auto-generated method stub
for(int i=0;i<res.length-1;i++){
ObjectAnimator animator = ObjectAnimator.ofFloat(imageList.get(i), "translationY", i * 220, 0);
animator.setDuration(500);
animator.setInterpolator(new BounceInterpolator());
animator.setStartDelay(i*200);
animator.start();
flag = true;
}
}

protected void startAnim() {
// TODO Auto-generated method stub
for(int i=0;i<res.length-1;i++){
ObjectAnimator animator = ObjectAnimator.ofFloat(imageList.get(i), "translationY", 0f, i * 220);
animator.setDuration(500);
animator.setInterpolator(new BounceInterpolator());
animator.setStartDelay(i*200);
animator.start();
flag = false;
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}</span>