我要说的这种方法是要将自己的app升级为系统应用，才可以操作，具体如何升级为系统应用可以查看将app应用升级为系统应用这篇博客
1、添加安装/卸载/重启设备的系统权限
<!-- 重启系统权限-->
<uses-permission android:name="android.permission.REBOOT"
tools:ignore="ProtectedPermissions" />
<uses-permission android:name="android.permission.INSTALL_PACKAGES"
tools:ignore="ProtectedPermissions" />
<uses-permission android:name="android.permission.DELETE_PACKAGES"
tools:ignore="ProtectedPermissions" />
2、安装apk
/**
* @param filepathApk 文件路径
*/
public static void installPackage(String filepathApk) {
try {
PackageInstaller pi = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
pi = context.getPackageManager().getPackageInstaller();
}
//给定模式，创建新的参数，创建新安装会话，返回唯一 Id
int sessionId= 0;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
sessionId = pi.createSession(new PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL));
}
//打开现有会话，主动执行工作
PackageInstaller.Session session = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
session = pi.openSession(sessionId);
}
long sizeBytes = 0;
final File file = new File(filepathApk);
if (file.isFile()) {
sizeBytes = file.length();
}
InputStream in = null;
OutputStream out = null;
in = new FileInputStream(filepathApk);
//打开一个流，将一个APK文件写入会话
//指定有效长度系统将预先分配底层磁盘空间以优化磁盘上的放置
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
out = session.openWrite("app_store_session", 0, sizeBytes);
}
int total = 0;
byte[] buffer = new byte[65536];
int len;
while ((len= in.read(buffer)) != -1) {
total += len;
out.write(buffer, 0, len);
}
//根据需要调用，用来确保字节已保留到磁盘
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
session.fsync(out);
}
in.close();
out.close();
LogUtils.d("Success: streamed apk " + total + " bytes");
PendingIntent broadCastTest = PendingIntent.getBroadcast(context, sessionId, new Intent(ACTION_INSTALL_SUCCESS), PendingIntent.FLAG_UPDATE_CURRENT);
//提交之前必须关闭所有流
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
session.commit(broadCastTest.getIntentSender());
}
session.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
ACTION_INSTALL_SUCCESS是要接收的广播name
<!-- 注册安装完成后的广播 -->
<receiver android:name="com.wxcy.guangming.receiver.InstallSuccessReceiver"
android:exported="true">
<intent-filter >
<action android:name="action.install.success" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
</receiver>
public class InstallSuccessReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("action.install.success")) {
Intent intent1=new Intent(context, MainActivity.class);
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent1);
LogUtils.d("安装完成");
}
}
}
3、卸载apk
**
* @param packageName 应用包名
*/
public static void uninstallPackage(String packageName) {
Intent intent = new Intent(context, context.getClass());
PendingIntent sender = PendingIntent.getActivity(context, 0, intent, 0);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
PackageInstaller mPackageInstaller = context.getPackageManager().getPackageInstaller();
mPackageInstaller.uninstall(packageName, sender.getIntentSender());
}
}
4、重启设备
/**
* 重启设备
*/
public static void rebootSystem() {
PowerManager manager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
manager.reboot("重新启动系统");
}
5、获得当前包的versionCode
/***
* packageInfo.versionName
* packageInfo.versionCode
*/
//获得包信息
public static PackageInfo getPackageInfo(){
//获取packageManager实例
PackageManager packageManager = context.getPackageManager();
// 获取包名
String packageName = context.getPackageName();
int flag = 0;
PackageInfo packageInfo = null;
// 获取packageInfo
try {
packageInfo = packageManager.getPackageInfo(packageName, flag);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return packageInfo;
}
