[Android] 获取设备的APP信息
16lz
2022-07-22
（1）获取设备安装的APP列表
主要有两个方法：
public abstract List<ApplicationInfo> getInstalledApplications (int flags)public abstract List<PackageInfo> getInstalledPackages (int flags)
示例：
mApplicationInfos = getPackageManager().getInstalledApplications(0);mListView.setAdapter(new ArrayAdapter<ApplicationInfo>(mContext, android.R.layout.simple_list_item_1, android.R.id.text1, mApplicationInfos){@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = View.inflate(getContext(), android.R.layout.simple_list_item_1, null);TextView tv = (TextView) view.findViewById(android.R.id.text1);ApplicationInfo item = getItem(position);tv.setText(item.loadLabel(getPackageManager()).toString() + "(" + (item.flags & ApplicationInfo.FLAG_SYSTEM) + ")");return view;}}); （2）判断APP应用类型
//判断系统程序，其他类似if ((applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 1){ //System application} （3）获取指定类型的APP列表
示例1：Intent intent = new Intent(Intent.ACTION_MAIN, null);intent.addCategory(Intent.CATEGORY_DEFAULT);mApps = getPackageManager().queryIntentActivities(intent, 0);mListView.setAdapter(new ArrayAdapter<ResolveInfo>(mContext, android.R.layout.simple_list_item_1, android.R.id.text1, mApps){@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = View.inflate(getContext(), android.R.layout.simple_list_item_1, null);TextView tv = (TextView) view.findViewById(android.R.id.text1);ResolveInfo item = getItem(position);tv.setText(item.activityInfo.loadLabel(getPackageManager()));return view;}}); 示例2，获取可用于分享的APP：
Intent intent = new Intent(Intent.ACTION_SEND);intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setType("text/plain");mApps = getPackageManager().queryIntentActivities(intent, 0); （4）判断某个App是否安装
Intent intent = new Intent();intent.setClassName("com.example.android.apis", "com.example.android.apis.ApiDemos");mApps = getPackageManager().queryIntentActivities(intent, 0); （5）启动另外一个APP
//同intent常规用法Intent intent = new Intent();intent.setClassName("com.example.android.apis", "com.example.android.apis.ApiDemos");startActivity(intent); （6）卸载一个APP
Uri uri = Uri.parse("package:" + packageName); Intent intent = new Intent(Intent.ACTION_DELETE,uri); context.startActivity(intent);
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