private void RunApp(String packageName) {
PackageInfo pi;
try {
pi = getPackageManager().getPackageInfo(packageName, 0);
Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
// resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
resolveIntent.setPackage(pi.packageName);
PackageManager pManager = getPackageManager();
List<ResolveInfo> apps = pManager.queryIntentActivities(
resolveIntent, 0);
ResolveInfo ri = apps.iterator().next();
if (ri != null) {
packageName = ri.activityInfo.packageName;
String className = ri.activityInfo.name;
Intent intent = new Intent(Intent.ACTION_MAIN);
// intent.addCategory(Intent.CATEGORY_LAUNCHER);
ComponentName cn = new ComponentName(packageName, className);
intent.setComponent(cn);
startActivity(intent);
}
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
问题是：当intent.addCategory(Intent.CATEGORY_LAUNCHER);注释去除时，部分应用点击后会导致程序异常退出。更确切的说是找不到apps。初步判断是因为这些应用没有在Intent-filter中设置<category android:name=”android.intent.category.LAUNCHER” />。这些应用是无法在桌面列表图标中显示的。所以，如果加上intent.addCategory(Intent.CATEGORY_LAUNCHER);因为这些应用没有这一属性，所以导致点击失败（即无法获取到对应的apps）。