Android TransitionDrawable ImageView过度效果使用实例

实现两张图片渐隐渐现的过渡效果Transition Drawable实现两张图片之间动态过度效果的方式。

运行如下所示：第一张为初始界面，第二张为过度中界面，第三张为过渡结束

新建一个TransitionDrawable的Android工程。
目录结构：

主界面activity_main.xml代码如下：

<RelativeLayout xmlns:android="https://schemas.android.com/apk/res/android"     xmlns:tools="https://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent">     <Button          android:layout_width="match_parent"         android:layout_height="wrap_content"         android:text="@string/button_text"         android:layout_centerInParent="true"         android:onClick="change"         android:background="@drawable/transition"         android:layout_marginBottom="20dp"/> </RelativeLayout>

主界面主要是一个应用了TransitionDrawable的按钮
transition是在drawalbe文件夹下，其代码如下所示：

<?xml version="1.0" encoding="utf-8"?> <transition xmlns:android="https://schemas.android.com/apk/res/android">  <item android:drawable="@color/red"></item>  <item android:drawable="@color/green"></item> </transition> 

strings.xml代码如下：

 <string name="app_name">TransitionDrawable</string>     <string name="hello_world">Hello world!</string>     <string name="action_settings">Settings</string>     <string name="button_text">过渡效果</string>

colors.xml代码如下：

<?xml version="1.0" encoding="utf-8"?> <resources>   <color name="red">#ff0000</color>   <color name="green">#00ff00</color>   </resources> 

MainActivity.java代码如下

package com.shen.transitiondrawable;  import android.app.Activity; import android.graphics.drawable.TransitionDrawable; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button;  public class MainActivity extends Activity {     @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);  }   @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);  }    public void change(View v)  {   TransitionDrawable drawable = (TransitionDrawable)((Button)v).getBackground();   drawable.startTransition(2000);  } } 

源码下载

扩展阅读：

https://www.tuicool.com/articles/uiaYBrU

https://adk.tumblr.com/post/13069401302/outofmemoryerror-imageview-and-transitiondrawable