1.PermissionHungryActivity.java

xml用上一章节的

package com.tiger.chapter07_client;import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.View;import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;import com.tiger.chapter07_client.utils.PermissionUtil;
import com.tiger.chapter07_client.utils.ToastUtlis;public class PermissionHungryActivity extends AppCompatActivity implements View.OnClickListener {private static final String[] PERMISSIONS = new String[]{Manifest.permission.READ_CONTACTS,Manifest.permission.WRITE_CONTACTS,Manifest.permission.SEND_SMS,Manifest.permission.READ_SMS};private static final int REQUEST_CODE_ALL = 1;private static final int REQUEST_CODE_CONTACTS = 2;private static final int REQUEST_CODE_SMS = 3;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_permission_lazy_activity);findViewById(R.id.btn_contact).setOnClickListener(this);findViewById(R.id.btn_sms).setOnClickListener(this);PermissionUtil.checkPermission(this, PERMISSIONS, REQUEST_CODE_ALL);}@Overridepublic void onClick(View v) {if (v.getId() == R.id.btn_contact) {//通讯录//检查权限是否拥有PermissionUtil.checkPermission(this, new String[]{PERMISSIONS[0], PERMISSIONS[1]}, REQUEST_CODE_CONTACTS);} else {//发短信PermissionUtil.checkPermission(this,  new String[]{PERMISSIONS[2], PERMISSIONS[3]}, REQUEST_CODE_SMS);}}//requestCode 是 表示哪个权限 是否有权限的标识@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);switch (requestCode) {case REQUEST_CODE_ALL:if (PermissionUtil.checkGrant(grantResults)) {Log.d("ning", "所有权限获取成功");} else {//部分权限获取失败for (int i = 0; i < grantResults.length; i++) {if (grantResults[i]!= PackageManager.PERMISSION_GRANTED){//判断是什么权限没有获取成功switch (permissions[i]) {case Manifest.permission.READ_CONTACTS:case Manifest.permission.WRITE_CONTACTS:ToastUtlis.show(this, "获取通讯录读写权限失败！");jumpToSettings();return;case Manifest.permission.SEND_SMS:case Manifest.permission.READ_SMS:ToastUtlis.show(this, "获取收发短信权限失败！");jumpToSettings();return;}}}jumpToSettings();}break;case REQUEST_CODE_CONTACTS:if (PermissionUtil.checkGrant(grantResults)) {Log.d("ning", "通讯录权限获取成功");} else {ToastUtlis.show(this, "获取通讯录读写权限失败");jumpToSettings();}break;case REQUEST_CODE_SMS:if (PermissionUtil.checkGrant(grantResults)) {Log.d("ning", "收发短信权限获取成功");} else {ToastUtlis.show(this, "获取收发短信权限失败");jumpToSettings();}break;}}//跳转到应用设置界面private void jumpToSettings() {Intent intent = new Intent();intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);//传入应用的唯一标识 包名intent.setData(Uri.fromParts("package",getPackageName(),null));intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);startActivity(intent);}}