Android-设置手机桌面

在Android系统中经常需要设置手机桌面功能，此文就通过程序来讲解如何在android系统中设置手机桌面。

Android前端xml文件代码:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    tools:context=".MainActivity" >    <TextView android:id="@+id/img"        android:text="设置手机桌面"        android:layout_width="fill_parent"        android:layout_height="wrap_content"/>        <ImageView         android:layout_height="fill_parent"        android:layout_width="fill_parent"        android:id="@+id/imgId"        android:src="@drawable/zht_bg"/></LinearLayout>

Android后台Activity程序代码:

package com.example.fiveandroid;public class MainActivity extends Activity {private ImageView imageView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);super.setContentView(R.layout.activity_main); //默认显示视图;//获取图片组件;this.imageView = (ImageView) super.findViewById(R.id.imgId);//设置长按按钮监听事件;this.imageView.setOnLongClickListener(new MyLongClickListener());}/** * 监听长按按钮事件; * @author Administrator * */private class MyLongClickListener implements OnLongClickListener{@Overridepublic boolean onLongClick(View v) {InputStream inputStream = null;try {//清空桌面背景;MainActivity.this.clearWallpaper(); //根据背景图片获取输入流;inputStream = MainActivity.this.imageView.getResources().openRawResource(R.drawable.zht_bg);//设置桌面背景;MainActivity.this.setWallpaper(inputStream);Toast.makeText(MainActivity.this, "设置桌面背景成功.",  Toast.LENGTH_SHORT).show();} catch (NotFoundException e) {Toast.makeText(MainActivity.this, "设置桌面背景失败.", Toast.LENGTH_SHORT).show();e.printStackTrace();} catch (IOException e) {Toast.makeText(MainActivity.this, "设置桌面背景失败.", Toast.LENGTH_SHORT).show();e.printStackTrace();}finally{//关闭输入流;if(inputStream != null){try {inputStream.close();} catch (IOException e) {e.printStackTrace();}}}return false;}}}

效果如下:

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