android 属性动画应用，不知道这个效果好看，反正挺好玩的！

来源：互联网发布：网络迷情演员表编辑：程序博客网时间：2024/05/01 13:36

前两天为了看漫画，下载了一个动漫APP，打开一看，滑动的时候竟然下面的TAB跟上面的TITEL都隐藏掉了，变成全屏了，感觉好牛逼的样子哦，当初我以为是隐藏跟现实的属性那，后来一仔细看，不是，那么只有动画来实现了，看来还得用属性动画来实现：属性动画嘛就是改变了对象的属性了。不知道这个效果好不好，应该适合一些全屏阅读类的app.

先看看它的效果：

在看看咱们的效果：

好了，代码很少就能实现这个效果：

package com.example.hidetitle;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.view.MotionEvent;import android.view.View;import android.view.ViewPropertyAnimator;import android.view.View.OnTouchListener;import android.widget.ArrayAdapter;import android.widget.LinearLayout;import android.widget.ListView;public class MainActivity extends Activity {private boolean ismove  = true;private ViewPropertyAnimator animatebottom,animatetop;@SuppressLint("NewApi")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView mListView = (ListView) findViewById(R.id.my_listview);LinearLayout  tabbottom  = (LinearLayout) findViewById(R.id.tabbottom);LinearLayout  tabtop  = (LinearLayout) findViewById(R.id.tabtop);animatebottom = tabbottom.animate();animatetop = tabtop.animate();ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1);for (int i = 0; i < 100; i++) {adapter.add(i + "");}mListView.setAdapter(adapter);mListView.setOnTouchListener(new OnTouchListener() {private float y;private boolean down = true;private float lasty;@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:y = event.getY();if (down) {lasty = y;}down = false;break;case MotionEvent.ACTION_MOVE:break;case MotionEvent.ACTION_UP:down = true;if (lasty - event.getY() < -5) {onScrollReset();} else if (lasty - event.getY() > 5) {onScroll();}break;}return false;}});}@SuppressLint("NewApi")public void onScroll() {if (ismove) {animatebottom.setDuration(500).translationY(200);animatetop.setDuration(500).translationY(-200);ismove = false;}}@SuppressLint("NewApi")public void onScrollReset() {if (!ismove) {animatebottom.setDuration(500).translationY(0);animatetop.setDuration(500).translationY(0);ismove = true;}}}

xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <ListView        android:id="@+id/my_listview"        android:layout_width="match_parent"        android:layout_height="match_parent" >    </ListView>    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="match_parent" >        <LinearLayout            android:id="@+id/tabbottom"            android:layout_width="match_parent"            android:layout_height="50dip"            android:layout_alignParentBottom="true"            android:background="#880090D9"            android:gravity="center"            android:orientation="vertical" >            <TextView                android:id="@+id/textView1"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="标题"                android:textColor="#ffffff"                android:textSize="18sp" />        </LinearLayout>                <LinearLayout            android:id="@+id/tabtop"            android:layout_width="match_parent"            android:layout_height="50dip"            android:layout_alignParentTop="true"            android:background="#880090D9"            android:gravity="center"            android:orientation="vertical" >            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="标题"                android:textColor="#ffffff"                android:textSize="18sp" />        </LinearLayout>    </RelativeLayout></FrameLayout>

好玩！

5 0