为了制作一个预装的Android应用,使其无法被用户删除,您需要遵循以下步骤:
<uses-permission android:name="android.permission.DELETE_PACKAGES" />
<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
<receiver
android:name=".MyDeviceAdminReceiver"
android:permission="android.permission.BIND_DEVICE_ADMIN">
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
</intent-filter>
<meta-data
android:name="android.app.device_admin"
android:resource="@xml/device_admin" />
</receiver>
然后,在res/xml目录下创建一个名为device_admin.xml的文件,并添加以下代码:
<?xml version="1.0" encoding="utf-8"?><device-admin>
<uses-policies>
<force-lock />
<disable-keyguard-features />
</uses-policies>
</device-admin>
private void enableDeviceAdmin() {
ComponentName componentName = new ComponentName(this, MyDeviceAdminReceiver.class);
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, componentName);
startActivityForResult(intent, 1);
}
@Override
public CharSequence onDisableRequested(Context context, Intent intent) {
return "This app cannot be disabled.";
}
通过遵循以上步骤,您可以创建一个预装的Android应用,使其无法被用户删除。请注意,这种方法可能会违反用户的隐私和安全,因此请谨慎使用。
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