android修改默认桌面

package com.lxl.lock;import java.util.List;import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.content.pm.ResolveInfo;import android.os.Bundle;import android.view.View;import android.view.Window;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.GridView;public class MainActivity extends Activity {  private GridView mGridView;  private List<ResolveInfo> mApps;   @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  this.requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main);   loadApps();  mGridView = (GridView) findViewById(R.id.gridView1);  mGridView.setAdapter(new AppAdapter(this, mApps));    mGridView.setOnItemClickListener(new OnItemClickListener() {   @Override  public void onItemClick(AdapterView<?> parent, View view,  int position, long id) {  ResolveInfo info = mApps.get(position);  // 应用的包名  String pkg = info.activityInfo.packageName;  // 应用的主Activity  String cls = info.activityInfo.name;  ComponentName componentName = new ComponentName(pkg, cls);  Intent intent = new Intent();  intent.setComponent(componentName);  startActivity(intent);  }  });  }   /**  * 加载app  */  private void loadApps() {  Intent intent = new Intent(Intent.ACTION_MAIN, null);  intent.addCategory(Intent.CATEGORY_LAUNCHER);  mApps = getPackageManager().queryIntentActivities(intent, 0);  }  } //适配器package com.lxl.lock;import java.util.List;import android.content.Context;import android.content.pm.ResolveInfo;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;import android.widget.ImageView.ScaleType;public class AppAdapter extends BaseAdapter {      List<ResolveInfo> mApps;      Context context;        public AppAdapter(Context context, List<ResolveInfo> apps) {          super();          this.context = context;          this.mApps = apps;      }        @Override      public int getCount() {          return mApps.size();      }        @Override      public Object getItem(int position) {          return mApps.get(position);      }        @Override      public long getItemId(int position) {          return position;      }        @Override      public View getView(int position, View convertView, ViewGroup parent) {          ImageView iv;          if (convertView == null) {              iv = new ImageView(context);              iv.setScaleType(ScaleType.FIT_CENTER);              iv.setLayoutParams(new GridView.LayoutParams(50,50));          } else {              iv = (ImageView) convertView;          }          ResolveInfo info = mApps.get(position);          iv.setImageDrawable(info.activityInfo.loadIcon(context.getPackageManager()));          return iv;      }    }

mainfest文件。。

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.lxl.lock"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />        <uses-permission android:name="android.permission.SET_WALLPAPER" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.lxl.lock.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />                <!-- 增加以下两行 -->                <category android:name="android.intent.category.HOME" />                <category android:name="android.intent.category.DEFAULT" />            </intent-filter>        </activity>    </application></manifest>

设置流程：

找到设置-》显示-》默认桌面-》选择自定义的那个

然后点击home，发现弹出的应该就是自定义的那个界面了。

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