Android6.0运行时权限的封装

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在Android6.0引入了运行时权限，也就是不用在安装应用的时候把所有权限都声明，在用户需要出发某种危险权限的时候，及时的提醒用户是否授权权限，简单的使用方法会增加代码量，那么就来做一下封装吧，以便后面使用起来相对简单。
1。由于请求运行时权限需要在activity里面，为了方便起见，可以封装到BaseActivity里

package com.yh.permissiontest;

import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by YH on 2017/3/10.
 */

public class BaseActivity extends AppCompatActivity {
    private final static int REQUESTCODE = 1;
    private PermissionListener mListener;

    public void requestRuntimePermission(String[] permissions, PermissionListener listener) {
        mListener = listener;
        List<String> permissionList = new ArrayList<>();
        for (String permission : permissions) {
            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
                permissionList.add(permission);
            }
        }
        //判断存储权限的集合是否为空，为空的话，说明权限都允许了
        if (!permissionList.isEmpty()) {
            ActivityCompat.requestPermissions(this, permissionList.toArray(new String[permissionList.size()]), REQUESTCODE);
        } else {
            mListener.onGranted();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case REQUESTCODE:
                if (grantResults.length > 0) {
                    List<String> deniedPernissions = new ArrayList<>();
                    for (int i = 0; i < grantResults.length; i++) {
                        int grantResult = grantResults[i];
                        String permission = permissions[i];
                        if (grantResult != PackageManager.PERMISSION_GRANTED) {
                            deniedPernissions.add(permission);
                        }
                    }
                    if (deniedPernissions.isEmpty()) {//所有权限都被允许
                        mListener.onGranted();
                    } else {//有被拒绝的权限
                        mListener.onDenied(deniedPernissions);
                    }
                }
                break;
            default:
                break;
        }
    }
}

然后写一个接口，将结果回调给调用的activity

package com.yh.permissiontest;

import java.util.List;

/**
 * Created by YH on 2017/3/10.
 */

public interface PermissionListener {
     /**
     * 全部允许
     */
    void onGranted();

    /**
     * 被拒绝时回调，
     *
     * @param deniedPermission 被拒绝的所有权限
     */
    void onDenied(List<String> deniedPermission);
}

然后在需要的时候调用即可
MainActivity：

requestRuntimePermission(new String[]{Manifest.permission.CALL_PHONE, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA}, new PermissionListener() {
            @Override
            public void onGranted() {
                Toast.makeText(MainActivity.this, "所有权限都允许了", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onDenied(List<String> deniedPermissions) {
                for (String deniedPermission : deniedPermissions) {
                    Toast.makeText(MainActivity.this, deniedPermission + "被拒绝", Toast.LENGTH_SHORT).show();
                }
            }
        });

到此，封装就结束了