默认launcher

目录

• • • 前提
    • 代码

前提

刷机后开机提示选择launcher应用，此时设备中有至少两个apk配置有属性，想要开机自动进入launcher,可以通过修改ResolverActivity,在开机时默认选择指定的launcher程序

代码

//frameworks/base/core/java/com/android/internal/app/ResolverActivity.java
import android.content.pm.PackageInfo;
import android.os.ProjectUtils;
private boolean setDefaultLauncher() {
try {
// String defLauncher = "com.android.launcher3/com.android.searchlauncher.SearchLauncher";
String defLauncher = getString(R.string.config_default_launcher_package);
String[] packConfig = defLauncher.split("/");
String defPackageName = packConfig[0];
String defClassName = packConfig[1];
Log.i("deflauncher", "Resolver deflauncher : PackageName = " + defPackageName + " ClassName = " + defClassName);
final PackageManager pm = getPackageManager();
try {
PackageInfo packageInfo = pm.getPackageInfo(defPackageName, PackageManager.GET_GIDS);
Log.i("deflauncher", "defLauncher: " + packageInfo);
} catch (PackageManager.NameNotFoundException e) {
Log.e("deflauncher", "default launchar not installed", e);
return false;
}
//清除当前默认launcher
ArrayList<IntentFilter> intentList = new ArrayList<IntentFilter>();
ArrayList<ComponentName> cnList = new ArrayList<ComponentName>();
pm.getPreferredActivities(intentList, cnList, null);
IntentFilter dhIF = null;
for(int i = 0; i < cnList.size(); i++) {
dhIF = intentList.get(i);
if(dhIF.hasAction(Intent.ACTION_MAIN) && dhIF.hasCategory(Intent.CATEGORY_HOME)) {
pm.clearPackagePreferredActivities(cnList.get(i).getPackageName());
}
}
IntentFilter filter = new IntentFilter();
filter.addAction("android.intent.action.MAIN");
filter.addCategory("android.intent.category.HOME");
filter.addCategory("android.intent.category.DEFAULT");
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List<ResolveInfo> list = new ArrayList<ResolveInfo>();
list = pm.queryIntentActivities(intent, 0);
final int N = list.size();
ComponentName[] set = new ComponentName[N];
int bestMatch = 0;
for (int i = 0; i < N; i++) {
ResolveInfo r = list.get(i);
set[i] = new ComponentName(r.activityInfo.packageName, r.activityInfo.name);
if (r.match > bestMatch) bestMatch = r.match;
}
ComponentName preActivity = new ComponentName(defPackageName, defClassName);
pm.addPreferredActivity(filter, bestMatch, set, preActivity);
return startDefaultLauncher();
} catch (Exception e) {
Log.i("deflauncher", "set default launchar fail", e);
return false;
}
}
private boolean startDefaultLauncher(){
// String defLauncher = "com.android.launcher3/com.android.searchlauncher.SearchLauncher";
String defLauncher = getString(R.string.config_default_launcher_package);
String[] packConfig = defLauncher.split("/");
String defPackageName = packConfig[0];
String defClassName = packConfig[1];
try {
Intent intent1 = new Intent(Intent.ACTION_MAIN);
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent1.addCategory(Intent.CATEGORY_LAUNCHER);
intent1.setComponent(new ComponentName(defPackageName, defClassName));
startActivity(intent1);
return true;
}catch (Exception e){
Log.i("deflauncher", defPackageName + " start Fail");
return false;
}
}