Created
September 19, 2014 14:09
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listview header animation
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package com.example.tedliang.myapplication; | |
import android.animation.Animator; | |
import android.animation.AnimatorSet; | |
import android.animation.ObjectAnimator; | |
import android.animation.ValueAnimator; | |
import android.app.ActionBar; | |
import android.app.Activity; | |
import android.content.Context; | |
import android.os.Bundle; | |
import android.text.method.CharacterPickerDialog; | |
import android.util.Log; | |
import android.view.LayoutInflater; | |
import android.view.Menu; | |
import android.view.MenuItem; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import android.view.animation.AnimationSet; | |
import android.widget.AdapterView; | |
import android.widget.BaseAdapter; | |
import android.widget.ListView; | |
import android.widget.RelativeLayout; | |
import android.widget.TextView; | |
public class MyActivity extends Activity { | |
private ListView listview; | |
private TextView textview; | |
int height; | |
private class MyAdapter extends BaseAdapter{ | |
LayoutInflater inflater; | |
public MyAdapter(Context context){ | |
inflater = LayoutInflater.from(context); | |
} | |
@Override | |
public int getCount() { | |
return 100; | |
} | |
@Override | |
public Object getItem(int i) { | |
return i; | |
} | |
@Override | |
public long getItemId(int i) { | |
return i; | |
} | |
@Override | |
public View getView(int i, View view, ViewGroup viewGroup) { | |
view = inflater.inflate(R.layout.adapter_layout,null); | |
TextView textivew = (TextView)view.findViewById(R.id.textview); | |
textivew.setText(String.valueOf(i)); | |
return view; | |
} | |
} | |
boolean isUp = true; | |
@Override | |
protected void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
setContentView(R.layout.activity_my); | |
textview = (TextView) findViewById(R.id.textview); | |
listview = (ListView)findViewById(R.id.listview); | |
listview.setAdapter(new MyAdapter(this)); | |
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { | |
@Override | |
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { | |
if(isUp) { | |
height = listview.getHeight(); | |
ObjectAnimator animX = ObjectAnimator.ofFloat(listview, "translationY", 0f, -textview.getHeight()); | |
ObjectAnimator animY = ObjectAnimator.ofFloat(textview, "translationY", 0f, -textview.getHeight()); | |
AnimatorSet set = new AnimatorSet(); | |
set.playTogether(animX, animY); | |
set.start(); | |
ValueAnimator.AnimatorUpdateListener listUpdater = new ValueAnimator.AnimatorUpdateListener() { | |
@Override | |
public void onAnimationUpdate(ValueAnimator animation) { | |
Log.d("Ted", "listview height" + listview.getHeight()); | |
RelativeLayout.LayoutParams p = (RelativeLayout.LayoutParams) listview.getLayoutParams(); | |
p.bottomMargin = -textview.getHeight(); | |
listview.setLayoutParams(p); | |
listview.requestLayout(); | |
isUp = false; | |
} | |
}; | |
animX.addUpdateListener(listUpdater); | |
}else{ | |
ObjectAnimator animX = ObjectAnimator.ofFloat(listview, "translationY", -textview.getHeight(),0f); | |
ObjectAnimator animY = ObjectAnimator.ofFloat(textview, "translationY", -textview.getHeight(),0f); | |
AnimatorSet set = new AnimatorSet(); | |
set.playTogether(animX, animY); | |
set.start(); | |
ValueAnimator.AnimatorUpdateListener listUpdater = new ValueAnimator.AnimatorUpdateListener() { | |
@Override | |
public void onAnimationUpdate(ValueAnimator animation) { | |
RelativeLayout.LayoutParams p = (RelativeLayout.LayoutParams) listview.getLayoutParams(); | |
p.bottomMargin =0; | |
listview.setLayoutParams(p); | |
listview.requestLayout(); | |
isUp = true; | |
} | |
}; | |
animX.addUpdateListener(listUpdater); | |
} | |
} | |
}); | |
} | |
} |
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