android 8.0 恢复出厂设置最简单的方法

  由于版本的更新，之前所用的方法已经无法满足调用恢复出厂设置，通过源码追溯如下：

首先进入到这个界面

查看源码

/** Copyright (C) 2010 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/package com.android.settings;import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.UserHandle;
import android.os.UserManager;
import android.service.oemlock.OemLockManager;
import android.service.persistentdata.PersistentDataBlockManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.settingslib.RestrictedLockUtils;import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;/*** Confirm and execute a reset of the device to a clean "just out of the box"* state.  Multiple confirmations are required: first, a general "are you sure* you want to do this?" prompt, followed by a keyguard pattern trace if the user* has defined one, followed by a final strongly-worded "THIS WILL ERASE EVERYTHING* ON THE PHONE" prompt.  If at any time the phone is allowed to go to sleep, is* locked, et cetera, then the confirmation sequence is abandoned.** This is the confirmation screen.*/
public class MasterClearConfirm extends OptionsMenuFragment {private View mContentView;private boolean mEraseSdCard;private boolean mEraseEsims;/*** The user has gone through the multiple confirmation, so now we go ahead* and invoke the Checkin Service to reset the device to its factory-default* state (rebooting in the process).*/private Button.OnClickListener mFinalClickListener = new Button.OnClickListener() {public void onClick(View v) {if (Utils.isMonkeyRunning()) {return;}final PersistentDataBlockManager pdbManager = (PersistentDataBlockManager)getActivity().getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);final OemLockManager oemLockManager = (OemLockManager)getActivity().getSystemService(Context.OEM_LOCK_SERVICE);if (pdbManager != null && !oemLockManager.isOemUnlockAllowed() &&Utils.isDeviceProvisioned(getActivity())) {// if OEM unlock is allowed, the persistent data block will be wiped during FR// process. If disabled, it will be wiped here, unless the device is still being// provisioned, in which case the persistent data block will be preserved.new AsyncTask<Void, Void, Void>() {int mOldOrientation;ProgressDialog mProgressDialog;@Overrideprotected Void doInBackground(Void... params) {pdbManager.wipe();return null;}@Overrideprotected void onPostExecute(Void aVoid) {mProgressDialog.hide();if (getActivity() != null) {getActivity().setRequestedOrientation(mOldOrientation);doMasterClear();}}@Overrideprotected void onPreExecute() {mProgressDialog = getProgressDialog();mProgressDialog.show();// need to prevent orientation changes as we're about to go into// a long IO request, so we won't be able to access inflate resources on flashmOldOrientation = getActivity().getRequestedOrientation();getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);}}.execute();} else {doMasterClear();}}private ProgressDialog getProgressDialog() {final ProgressDialog progressDialog = new ProgressDialog(getActivity());progressDialog.setIndeterminate(true);progressDialog.setCancelable(false);progressDialog.setTitle(getActivity().getString(R.string.master_clear_progress_title));progressDialog.setMessage(getActivity().getString(R.string.master_clear_progress_text));return progressDialog;}};private void doMasterClear() {Intent intent = new Intent(Intent.ACTION_FACTORY_RESET);intent.setPackage("android");intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);intent.putExtra(Intent.EXTRA_REASON, "MasterClearConfirm");intent.putExtra(Intent.EXTRA_WIPE_EXTERNAL_STORAGE, mEraseSdCard);intent.putExtra(Intent.EXTRA_WIPE_ESIMS, mEraseEsims);getActivity().sendBroadcast(intent);// Intent handling is asynchronous -- assume it will happen soon.}/*** Configure the UI for the final confirmation interaction*/private void establishFinalConfirmationState() {mContentView.findViewById(R.id.execute_master_clear).setOnClickListener(mFinalClickListener);}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(getActivity(), UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId());if (RestrictedLockUtils.hasBaseUserRestriction(getActivity(),UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId())) {return inflater.inflate(R.layout.master_clear_disallowed_screen, null);} else if (admin != null) {View view = inflater.inflate(R.layout.admin_support_details_empty_view, null);ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false);view.setVisibility(View.VISIBLE);return view;}mContentView = inflater.inflate(R.layout.master_clear_confirm, null);establishFinalConfirmationState();setAccessibilityTitle();return mContentView;}private void setAccessibilityTitle() {CharSequence currentTitle = getActivity().getTitle();TextView confirmationMessage =(TextView) mContentView.findViewById(R.id.master_clear_confirm);if (confirmationMessage != null) {String accessibileText = new StringBuilder(currentTitle).append(",").append(confirmationMessage.getText()).toString();getActivity().setTitle(Utils.createAccessibleSequence(currentTitle, accessibileText));}}@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);Bundle args = getArguments();mEraseSdCard = args != null&& args.getBoolean(MasterClear.ERASE_EXTERNAL_EXTRA);mEraseEsims = args != null&& args.getBoolean(MasterClear.ERASE_ESIMS_EXTRA);}@Overridepublic int getMetricsCategory() {return MetricsEvent.MASTER_CLEAR_CONFIRM;}
}

代码里面有一个doMasterClear()方法就是实现恢复出厂设置的所

private void doMasterClear() {Intent intent = new Intent(Intent.ACTION_FACTORY_RESET);intent.setPackage("android");intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);intent.putExtra(Intent.EXTRA_REASON, "MasterClearConfirm");intent.putExtra(Intent.EXTRA_WIPE_EXTERNAL_STORAGE, mEraseSdCard);intent.putExtra(Intent.EXTRA_WIPE_ESIMS, mEraseEsims);getActivity().sendBroadcast(intent);// Intent handling is asynchronous -- assume it will happen soon.}

由于方法里面的Intent 是调用的隐藏的属性所以我用最笨的方法找到了源码里面的变量对呀的值直接写进去方法如下：

 private void setMaster(){Bundle args = getArguments();boolean mEraseSdCard = args !=null && args.getBoolean("erase_sd");boolean mEraseEsims = args != null && args.getBoolean("erase_esim");Intent intent = new Intent("android.intent.action.FACTORY_RESET");intent.setPackage("android");intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);intent.putExtra("android.intent.extra.REASON", "MasterClearConfirm");intent.putExtra("android.intent.extra.WIPE_EXTERNAL_STORAGE", mEraseSdCard);intent.putExtra("com.android.internal.intent.extra.WIPE_ESIMS", mEraseEsims);getActivity().sendBroadcast(intent);}

这是我自己写的方法
你可以直接用按钮调用方法就可以实现功能

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