我一直在努力通过 adb shell dpm 命令将我的应用程序设置为设备所有者，但出现了错误
Error: Bad admin: ComponentInfo{com.example.oshao.autolock/com.example.oshao.
autolock.AdminReceiver}
这是我的活动和清单
public class MainActivity extends AppCompatActivity {
private DevicePolicyManager mDpm;
private boolean isKioskModeEnabled = false;
private Button btnEnabled;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnEnabled = (Button) findViewById(R.id.btnEnable);
btnEnabled.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
enableKioskMode(!isKioskModeEnabled);
}
});
ComponentName deviceAdmin = new ComponentName(this, AdminReceiver.class);
mDpm = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
if (!mDpm.isAdminActive(deviceAdmin)) {
Toast.makeText(this, "This ap is not a device admin", Toast.LENGTH_SHORT).show();
}
if (mDpm.isDeviceOwnerApp(getPackageName())) {
mDpm.setLockTaskPackages(deviceAdmin, new String[]{getPackageName()});
} else {
Toast.makeText(this, "This app is not the device owner", Toast.LENGTH_SHORT).show();
}
}
private void enableKioskMode(boolean enabled) {
if (enabled) {
if (mDpm.isLockTaskPermitted(this.getPackageName())) {
startLockTask();
isKioskModeEnabled = true;
btnEnabled.setText("Exit Kiosk Mode");
} else {
Toast.makeText(this, "Kiosk Mode is not permitted", Toast.LENGTH_SHORT).show();
}
} else {
stopLockTask();
isKioskModeEnabled = false;
btnEnabled.setText("Enter Kiosk Mode");
}
}
}
清单：
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name="com.example.oshao.autolock.AdminReceiver"
android:permission="android.permission.BIND_DEVICE_ADMIN">
<meta-data
android:name="android.app.admin"
android:resource="@xml/device_admin"/>
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
</intent-filter>
</receiver>
</application>
我不确定为什么错误仍然存在，是因为一台设备只能有一个应用程序被设置为设备所有者？另一个问题是 adb 命令可以在没有帐户的设备上实现并连接到 pc 以便在终端中输入命令。在设备没有root的情况下，我可以通过应用程序中的代码来完成吗，因为我有几个设备并且很难逐个设置它们，谢谢