问题

我需要在点击按钮时对手机进行硬重置。
我认为问题可能在清单中的权限或者在某些新版本的 Android 上需要调用一些权限。
我不知道该如何修复以及问题出在哪里。如果您能提供解决方案，我将非常感谢。

**主活动 MainActivity**
```java
package com.example.hard_reset_by_google;

import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    DevicePolicyManager mDPM;
    ComponentName mDeviceAdmin;

    public static class WipeDataReceiver extends DeviceAdminReceiver {

    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final int currentAPIVersion = Build.VERSION.SDK_INT;

        if (currentAPIVersion >= android.os.Build.VERSION_CODES.FROYO) {
            //2.2+
            mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
            mDeviceAdmin = new ComponentName(this, WipeDataReceiver.class);
        }

        Button button = findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                OnReset(currentAPIVersion);
            }
        });
    }

    private void OnReset(int currentAPIVersion){
        if (currentAPIVersion >= android.os.Build.VERSION_CODES.FROYO) {
            // 2.2+
            if (!mDPM.isAdminActive(mDeviceAdmin)) {
                Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
                intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mDeviceAdmin);
                intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, "Process will remove user installed applications, settings, wallpaper and sound settings. Are you sure you want to wipe device?");
                startActivityForResult(intent, 1234);
            } else {
                // device administrator, can do security operations
                mDPM.wipeData(0);
            }
        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="141dp"
        android:layout_marginTop="193dp"
        android:layout_marginEnd="141dp"
        android:layout_marginBottom="342dp"
        android:text="Do Hard Reset"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="69dp"
        android:layout_marginTop="129dp"
        android:layout_marginEnd="69dp"
        android:text="Будьте осторожны с этим приложением"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

以及

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.hard_reset_by_google">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.BIND_DEVICE_ADMIN"
        tools:ignore="ManifestOrder,ProtectedPermissions" />

</manifest>


<details>
<summary>英文翻译</summary>

I need to do a Hard reset on phone, when button clicked.
I think that problem is somewheare in permissions in manifest or in fact that some permissions on new versions of android need to be called.
I don&#39;t know what to fix and what&#39;s the problem. I&#39;ll be very grateful if you&#39;ll write decision.

**Main Activity**
```package com.example.hard_reset_by_google;

import android.app.admin.DeviceAdminReceiver;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;


import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    DevicePolicyManager mDPM;
    ComponentName mDeviceAdmin;

    public static class WipeDataReceiver extends DeviceAdminReceiver {

    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final int currentAPIVersion = Build.VERSION.SDK_INT;

        if (currentAPIVersion &gt;= android.os.Build.VERSION_CODES.FROYO) {
            //2.2+
            mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
            mDeviceAdmin = new ComponentName(this, WipeDataReceiver.class);
        }

        Button button = findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                OnReset(currentAPIVersion);
            }
        });
    }

    private void OnReset(int currentAPIVersion){
        if (currentAPIVersion &gt;= android.os.Build.VERSION_CODES.FROYO) {
            // 2.2+
            if (!mDPM.isAdminActive(mDeviceAdmin)) {
                Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
                intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, mDeviceAdmin);
                intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION, &quot;Process will remove user installed applications, settings, wallpaper and sound settings. Are you sure you want to wipe device?&quot;);
                startActivityForResult(intent, 1234);
            } else {
                // device administrator, can do security operations
                mDPM.wipeData(0);
            }

        }
    }
}

activity_main.xml

&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
&lt;androidx.constraintlayout.widget.ConstraintLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;
    xmlns:tools=&quot;http://schemas.android.com/tools&quot;
    android:layout_width=&quot;match_parent&quot;
    android:layout_height=&quot;match_parent&quot;
    tools:context=&quot;.MainActivity&quot;&gt;

    &lt;Button
        android:id=&quot;@+id/button&quot;
        android:layout_width=&quot;wrap_content&quot;
        android:layout_height=&quot;wrap_content&quot;
        android:layout_marginStart=&quot;141dp&quot;
        android:layout_marginTop=&quot;193dp&quot;
        android:layout_marginEnd=&quot;141dp&quot;
        android:layout_marginBottom=&quot;342dp&quot;
        android:text=&quot;Do Hard Reset&quot;
        app:layout_constraintBottom_toBottomOf=&quot;parent&quot;
        app:layout_constraintEnd_toEndOf=&quot;parent&quot;
        app:layout_constraintStart_toStartOf=&quot;parent&quot;
        app:layout_constraintTop_toBottomOf=&quot;@+id/textView&quot; /&gt;

    &lt;TextView
        android:id=&quot;@+id/textView&quot;
        android:layout_width=&quot;wrap_content&quot;
        android:layout_height=&quot;wrap_content&quot;
        android:layout_marginStart=&quot;69dp&quot;
        android:layout_marginTop=&quot;129dp&quot;
        android:layout_marginEnd=&quot;69dp&quot;
        android:text=&quot;Будьте осторожны с этим приложением&quot;
        app:layout_constraintEnd_toEndOf=&quot;parent&quot;
        app:layout_constraintStart_toStartOf=&quot;parent&quot;
        app:layout_constraintTop_toTopOf=&quot;parent&quot; /&gt;
&lt;/androidx.constraintlayout.widget.ConstraintLayout&gt;

and
AndroidManifest.xml

&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
&lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    xmlns:tools=&quot;http://schemas.android.com/tools&quot;
    package=&quot;com.example.hard_reset_by_google&quot;&gt;

    &lt;application
        android:allowBackup=&quot;true&quot;
        android:icon=&quot;@mipmap/ic_launcher&quot;
        android:label=&quot;@string/app_name&quot;
        android:roundIcon=&quot;@mipmap/ic_launcher_round&quot;
        android:supportsRtl=&quot;true&quot;
        android:theme=&quot;@style/AppTheme&quot;&gt;
        &lt;activity android:name=&quot;.MainActivity&quot;&gt;
            &lt;intent-filter&gt;
                &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;
                &lt;action android:name=&quot;android.app.action.DEVICE_ADMIN_ENABLED&quot; /&gt;
                &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
            &lt;/intent-filter&gt;
        &lt;/activity&gt;
    &lt;/application&gt;

    &lt;uses-permission android:name=&quot;android.permission.BIND_DEVICE_ADMIN&quot;
        tools:ignore=&quot;ManifestOrder,ProtectedPermissions&quot; /&gt;

&lt;/manifest&gt;
&#39;&#39;&#39;


</details>

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