Android 权限简单分装

Android 6.0 权限简单封装

Android 提供了 如下函数提供给开发者使用.

1 . ActivityCompat.checkSelfPermission(…)
检测是否具备权限

2 .ActivityCompat.requestPermissions(…);
向用户请求权限

3 .onRequestPermissionsResult
监听用户授权回调.

实际开发中.有很多动态权限需要申请.还要等用户把这些权限都授予后才能进行如下操作.所以我就进行了一个简单的封装.下面这段代码是可用的.(_V)! .

工具类.

public class PermissionRequest {

    int mRequestCode;
    OnRequested mReques;
    String[] mPermissions;  //必要
    String[] mPermissionsSecondary; //次要
    Activity mActivity;

    public PermissionRequest(Activity activity,int requestCode,String[] permission1, String[] permission2,OnRequested mReques) {
        this.mRequestCode = requestCode;
        this.mReques = mReques;
        this.mPermissions = (permission1 == null) ? new String[]{}: permission1;
        this.mPermissionsSecondary = (permission2 == null) ? new String[]{}: permission2;
        this.mActivity = activity;
    }
    public void pause(){
        mActivity = null;
    }
    public void request() {
        ArrayList<String> requestP = new ArrayList<>();  //未申请的必要权限
        ArrayList<String> requestS = new ArrayList<>();  //未申请的非必要权限
        checkRequestError(requestP,mPermissions);
        checkRequestError(requestS,mPermissionsSecondary);
        if (requestP.size() == 0) {
            if (requestS.size() == 0){
                mReques.onPerRequestedAllSucess();
               return;
            }
            mReques.onPerRequestedSucess(requestS.toArray(new String[]{}));
        } else {
            ArrayList<String> list =  new ArrayList<>();
            list.addAll(requestP);
            list.addAll(requestS);
            ActivityCompat.requestPermissions(mActivity, list.toArray(new String[]{}), mRequestCode);
        }
    }

    private void checkRequestError(ArrayList<String> request,String[] permissions) {
        for (String permission : permissions) {
            if (ActivityCompat.checkSelfPermission(mActivity, permission) == -1) {
                request.add(permission);
            }
        }
    }

    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (mRequestCode == requestCode) {
            request();
        }

    }

    public interface OnRequested {
        void onPerRequestedAllSucess();   //必要和 非必要的权限 全部申请成功

        /**
         * 所有必须的权限申请成功
         * permission 没有未申请成功的非要权限
         */
        void onPerRequestedSucess(String[] permissions);
    }
}

权限Activity类(基类)

 public abstract class PermisActivity extends AppCompatActivity implements PermissionRequest.OnRequested  {
    private String[] mPermissions_storage;
    private String[] mPermissions_storage_Secondary;
    //oncreate里面设置

    //必要权限
    public void setNecessaryPermissionsStorages(String ... permissions_storage){
        mPermissions_storage = permissions_storage;
    };
    //非必要权限
    public void setNot_Essential(String ... permissions_storage){
        mPermissions_storage_Secondary = permissions_storage;
    }

    @CallSuper
    @Override
    public void onPostCreate( Bundle savedInstanceState, PersistableBundle persistentState) {
        super.onPostCreate(savedInstanceState, persistentState);

    }

    protected void checkPermiss() {
        mPermissionRequest = new PermissionRequest(this,12,mPermissions_storage,mPermissions_storage_Secondary,this);
        mPermissionRequest.request();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        mPermissionRequest.onRequestPermissionsResult(requestCode,permissions,grantResults);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mPermissionRequest.pause();
    }

    PermissionRequest mPermissionRequest;
}

我写到基类里面的原因是.比较闲 不太建议这样做. 当然如果每个界面都要动态权限也是可以这样玩的.
//必要权限用户必须全部同意否则就会一直弹窗口.

public class MainActivity extends PermisActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTextView = findViewById(R.id.tv_perssion);
        //必要权限
        setNecessaryPermissionsStorages(
                Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_CONTACTS,
                Manifest.permission.READ_CONTACTS
         );
        //非必要权限
        setNot_Essential(Manifest.permission.READ_PHONE_STATE);
        checkPermiss();
    }
    TextView mTextView;
    Handler handler = new Handler();

    @Override
    public void onPerRequestedAllSucess() {
        mTextView.setText("所有权限申请成功");

    }

    @Override
    public void onPerRequestedSucess(final String[] permissions) {
        mTextView.setText("所有必要权限申请完成 还有"+ permissions.length+"个非必要权限未申请");
    }
}