Android 6.0 运行时权限 easypermissions，permissionsdispatcher ，rxpermissions 的实现

关于android 6.0 运行时权限 ，目前有五种处理方法

危险权限和权限组

权限组	危险权限
CALENDAR	READ_CALENDAR
	WRITE_CALENDAR
CONTACTS	READ_CONTACTS
	WRITE_CONTACTS
	GET_ACCOUNTS
LOCATION	ACCESS_FINE_LOCATION
	ACCESS_COARSE_LOCATION
MICROPHONE	RECORD_AUDIO
PHONE	READ_PHONE_STATE
	CALL_PHONE
	READ_CALL_LOG
	WRITE_CALL_LOG
	ADD_VOICEMAIL
	USE_SIP
	PROCESS_OUTGOING_CALLS
SENSORS	BODY_SENSORS
SMS	SEND_SMS
	RECEIVE_SMS
	USE_SIP
	READ_SMS
	RECEIVE_WAP_PUSH
	RECEIVE_MMS
STORAGE	READ_EXTERNAL_STORAGE
	WRITE_EXTERNAL_STORAGE

gitHub 已上传三种实现方案的Demo
https://github.com/pengchengfuGit/PermissionsDemo

1.. 采用不理睬的方式将项目的targetSdkVersion 设置为22及以下，
如果设备运行的是 Android 5.1（API 级别 22）或更低版本，
并且应用的 targetSdkVersion 是 22 或更低版本，则系统会在安装时要求用户授予权限。
再次强调，系统只告诉用户应用需要的权限组，而不告知具体权限。


2.. 采用系统原生API处理，google原生方案。（采用原生方案，后面会更新。。。。）


3.. easypermissions 基于注解，采用反射，影响性能

package com.example.administrator.permissionstest;

import android.Manifest;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

import pub.devrel.easypermissions.EasyPermissions;

public class EasyActivity extends AppCompatActivity implements EasyPermissions.PermissionCallbacks {

    private static final int RC_CALL_PHONE = 0;
    private String TAG= "EasyActivity";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_common);

        TextView permissions = (TextView) findViewById(R.id.permissions);
        permissions.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String[] perms = {Manifest.permission.CALL_PHONE};
                EasyPermissions.requestPermissions(EasyActivity.this, "直接拨打电话的权限",
                        RC_CALL_PHONE, perms);
            }
        });
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        //Forward results to EasyPermissions
        Toast.makeText(getApplicationContext(), "onRequestPermissionsResult    requestCode" + requestCode, Toast.LENGTH_LONG).show();
        EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
    }

    @Override
    public void onPermissionsGranted(int requestCode, List<String> perms) {
        if (perms != null && perms.size() > 0)
            for (String item : perms) {
                Log.d(TAG,"onPermissionsGranted    "+item);
            }
    }

    @Override
    public void onPermissionsDenied(int requestCode, List<String> perms) {
        if (perms != null && perms.size() > 0)
            for (String item : perms) {
                Log.d(TAG,"onPermissionsDenied    "+item);
            }
    }
}

4.. permissionsdispatcher 基于注解，编译生成类，无反射，不影响性能

package com.example.administrator.permissionstest;

import android.Manifest;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import permissions.dispatcher.NeedsPermission;
import permissions.dispatcher.OnNeverAskAgain;
import permissions.dispatcher.OnPermissionDenied;
import permissions.dispatcher.OnShowRationale;
import permissions.dispatcher.PermissionRequest;
import permissions.dispatcher.RuntimePermissions;

@RuntimePermissions
public class DispatcherActivity extends AppCompatActivity {

    private String TAG = "DispatcherActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_common);
        TextView permissions = (TextView) findViewById(R.id.permissions);
        permissions.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "showCameraWithCheck ");
                DispatcherActivityPermissionsDispatcher.showCameraWithCheck(DispatcherActivity.this);
            }
        });
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        // NOTE: delegate the permission handling to generated method
        DispatcherActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults);
    }

    @NeedsPermission(Manifest.permission.CAMERA)
    void showCamera() {
        Log.d(TAG, "showCamera ");
        Intent intent = new Intent(); //调用照相机
        intent.setAction("android.media.action.STILL_IMAGE_CAMERA");
        startActivity(intent);
    }

    @OnShowRationale(Manifest.permission.CAMERA)
    void showRationaleForCamera(final PermissionRequest request) {
        Log.d(TAG, "showRationaleForCamera ");
        new AlertDialog.Builder(this)
                .setMessage("使用此功能需要打开照相机的权限")
                .setPositiveButton("允许", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        request.proceed();
                    }
                })
                .setNegativeButton("拒绝", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        request.cancel();
                    }
                })
                .show();
    }

    @OnPermissionDenied(Manifest.permission.CAMERA)
    void showDeniedForCamera() {
        Log.d(TAG, "showDeniedForCamera ");
        Toast.makeText(this, "你拒绝了权限，该功能不可用", Toast.LENGTH_SHORT).show();
    }

    @OnNeverAskAgain(Manifest.permission.CAMERA)
    void showNeverAskForCamera() {
        Log.d(TAG, "showNeverAskForCamera ");
        Toast.makeText(this, "用户设置不再询问权限申请", Toast.LENGTH_SHORT).show();
     //   Toast.makeText(this, " R.string.permission_camera_neverask", Toast.LENGTH_SHORT).show();
    }
}

5.. rxpermissions 基于Rxjava, Rxjava1.0版本跟2.0版本都有（本文采用Rxjava2.0）

 package com.example.administrator.permissionstest;

import android.Manifest;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.tbruyelle.rxpermissions2.Permission;
import com.tbruyelle.rxpermissions2.RxPermissions;

import io.reactivex.functions.Consumer;
import pub.devrel.easypermissions.EasyPermissions;

public class RxActivity extends AppCompatActivity{

    private String TAG= "RxActivity";//READ_EXTERNAL_STORAGE
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_common);

        TextView permissions = (TextView) findViewById(R.id.permissions);
        permissions.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
             //   RxPermissions rxPermission = new RxPermissions(RxActivity.this);
                requestPermission();

            }
        });
    }

    public void requestPermission(){
        RxPermissions rxPermissions = new RxPermissions(this);
        rxPermissions.requestEach(Manifest.permission.READ_EXTERNAL_STORAGE).subscribe(new Consumer<Permission>() {
            @Override
            public void accept(Permission permission) throws Exception {
                if (permission.granted) {
                    // 用户已经同意该权限
                    Toast.makeText(getApplicationContext(),"用户已经同意该权限",Toast.LENGTH_SHORT).show();
                    Log.d(TAG, permission.name + " is granted.");
                } else if (permission.shouldShowRequestPermissionRationale) {
                    // 用户拒绝了该权限，没有选中『不再询问』（Never ask again）,那么下次再次启动时，还会提示请求权限的对话框
                    Toast.makeText(getApplicationContext(),"用户拒绝了该权限",Toast.LENGTH_SHORT).show();
                    Log.d(TAG, permission.name + " is denied. More info should be provided.");
                } else {
                    // 用户拒绝了该权限，并且选中『不再询问』
                    Toast.makeText(getApplicationContext(),"用户拒绝了该权限，并且选中『不再询问』",Toast.LENGTH_SHORT).show();
                    Log.d(TAG, permission.name + " is denied.");
                }
            }
        });
    }
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        //Forward results to EasyPermissions
        Toast.makeText(getApplicationContext(), "onRequestPermissionsResult    requestCode" + requestCode, Toast.LENGTH_LONG).show();
        EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
    }

}

PS：本人写的一个小Demo 里面包含了easypermissions，permissionsdispatcher ，rxpermissions
三种插件的用法
permissions Demo

Google官方github Demo