下面以设置Google Launcher2作为默认启动的Launcher为例,其包名为com.android.launcher2
编辑packages/apps/Provision/src/com/android/DefaultActivity.java文件 ...... // remove this activity from the package manager. PackageManager pm = getPackageManager(); //add start Intent intent=new Intent(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_HOME); List<ResolveInfo> resolveInfoList = pm.queryIntentActivities(intent, 0); if(resolveInfoList != null){ int size = resolveInfoList.size(); for(int j=0;j<size;j++){ final ResolveInfo r = resolveInfoList.get(j); if(r.activityInfo.packageName.equals(this.getPackageName())){ resolveInfoList.remove(j); size -= 1; break; } } ComponentName[] set = new ComponentName[size]; ComponentName defaultLauncher=new ComponentName("com.android.launcher2", "com.android.launcher2.Launcher"); int defaultMatch=0; for(int i=0;i<size;i++){ final ResolveInfo resolveInfo = resolveInfoList.get(i); Log.d(TAG, resolveInfo.toString()); set[i] = new ComponentName(resolveInfo.activityInfo.packageName,resolveInfo.activityInfo.name); if(defaultLauncher.getClassName().equals(resolveInfo.activityInfo.name)){ defaultMatch = resolveInfo.match; } } Log.d(TAG,"defaultMatch="+Integer.toHexString(defaultMatch)); IntentFilter filter=new IntentFilter(); filter.addAction(Intent.ACTION_MAIN); filter.addCategory(Intent.CATEGORY_HOME); filter.addCategory(Intent.CATEGORY_DEFAULT); pm.clearPackagePreferredActivities(defaultLauncher.getPackageName()); pm.addPreferredActivity(filter, defaultMatch, set, defaultLauncher); } //add end // remove this activity from the package manager. ComponentName name = new ComponentName(this, DefaultActivity.class); pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP); ...... 然后修改packages/apps/Provision/AndroidManifest.xml文件,增加以下语句: <uses-permission android:name=”android.permission.SET_PREFERRED_APPLICATIONS” /> 备注:上面所添加到代码,一定要放在pm.setComponentEnabledSetting这两行语句之前,如果放在这个语句后面,那后面的代码就无法执行了,导致设置实效。 这里的com.android.launcher2是Google默认的Launcher2,可以根据自己的需要来定制,让系统进入指定的那个Launcher。 |
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来自: lifei_szdz > 《launcher》