Android6.0权限分配解决方案2----第三方库解决

在看这篇文章以前先看
https://blog.csdn.net/zhaihaohao1/article/details/81509627
接着讲：
Android6.0提出了如此周到、复杂的权限处理方式，对用户而言是好事，对程序员而言是极大的繁琐。
幸运的是我们有github，早已有人开发了第三方插件。
https://github.com/pankaj89/PermissionHelper
1在build.gradle中引入依赖：

compile 'com.master.android:permissionhelper:1.3'

2在AndroidManifest声明

 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

3在代码中动态授权：
Main2Activity中

package com.zhh.quanxian;

import android.Manifest;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.master.permissionhelper.PermissionHelper;
import com.orhanobut.logger.Logger;

/**
 * 使用第三方库授权
 */
public class Main2Activity extends Activity {
    private String TAG = "HelloActivity";
    private PermissionHelper permissionHelper;
    private Button btnShouquan;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        btnShouquan = findViewById(R.id.btnShouquan);
        btnShouquan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //拿到当前版本号
                int sdkVersion = Main2Activity.this.getApplicationInfo().targetSdkVersion;
//              判断当前版本
                if (sdkVersion >= 23) {
                    Toast.makeText(Main2Activity.this, "6.0及以上动态授权", Toast.LENGTH_SHORT).show();
//                  6.0以上单独申请权限
                    checkPermission();
                } else {
                    Toast.makeText(Main2Activity.this, "6.0以下在主清单文件中授权", Toast.LENGTH_SHORT).show();
                    // Pre-Marshmallow
                    // 默认在主清单文件中授权
                }
            }
        });

    }

   private void checkPermission(){
       permissionHelper = new PermissionHelper(this, new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE}, 100);
       permissionHelper.request(new PermissionHelper.PermissionCallback() {
           @Override
           public void onPermissionGranted() {
               //全都授权
               Log.e(TAG, "onPermissionGranted...");
               Logger.t("111").d("全部授权");
               obtainMediaInfo();
           }

           @Override
           public void onIndividualPermissionGranted(String[] grantedPermission) {
               //某个授权
               Log.e(TAG, "onIndividualPermissionGranted() called with: grantedPermission = [" + TextUtils.join(",", grantedPermission) + "]");
               Logger.t("111").d("某个授权");
           }

           @Override
           public void onPermissionDenied() {
               //某个拒绝
               Log.e(TAG, "onPermissionDenied...");
               Logger.t("111").d("某个拒绝");
           }

           @Override
           public void onPermissionDeniedBySystem() {
               //用户选择了"不再询问"后，点击"拒绝按钮"，执行此方法
               Log.e(TAG, "onPermissionDeniedBySystem...");
               Logger.t("111").d("不再询问，拒绝按钮");
           }
       });
   }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (permissionHelper != null) {
            permissionHelper.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }


    }

    /**
     * 将之前获取音乐信息的代码单独封装到了一个方法里面
     */
    private void obtainMediaInfo() {
//      读取手机中的音乐资源名称
        Cursor cursor = getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, null);
        cursor.moveToFirst();
        do {
            String title = cursor.getString(cursor.getColumnIndex("title"));
            Log.e("TITLE", title);
        } while (cursor.moveToNext());
    }
}

activity_main2中

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.zhh.quanxian.Main2Activity"
    android:orientation="vertical"
    >

   <Button
       android:id="@+id/btnShouquan"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:text="授权"

       />

</LinearLayout>

4build.gradle文件中把targetSdkVersion的值改动到大于22测试即可

 defaultConfig {
        applicationId "com.zhh.quanxian"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
    }

讲完了参考文章：
https://blog.csdn.net/jasper_success/article/details/78836899
源码下载
https://download.csdn.net/download/zhaihaohao1/10591230