Android6.0运行时权限以及RxPermissions的使用

来源：互联网发布：龙虎榜数据分析软件编辑：程序博客网时间：2024/06/03 19:38

普通方式请求

以拨打电话为例

@OnClick(R.id.btnCommon)public void CommonCall() {    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) !=            PackageManager.PERMISSION_GRANTED){        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CALL_PHONE}, 0);    }else {        startActivity(new Intent(Intent.ACTION_CALL).setData(Uri.parse("tel:" + 10000)));    }}

 @Overridepublic void onRequestPermissionsResult(int requestCode,         @NonNull String[] permissions,@NonNull int[] grantResults) {    super.onRequestPermissionsResult(requestCode, permissions, grantResults);    if (requestCode == 0) {        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {            startActivity(new Intent(Intent.ACTION_CALL).setData(Uri.parse("tel:" + 10000)));        }    }}

RxPermissions方式请求

RxPermissions github 传送门：RxPermissions

     //RxJava的依赖包    compile 'io.reactivex.rxjava2:rxjava:'+rxjava_version    //RxAndroid的依赖包    compile 'io.reactivex.rxjava2:rxandroid:'+rxjava_version    //RxPermissions    compile 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.4@aar'

首先需要做初始化工作

RxPermissions rxPermissions = new RxPermissions(this);

@OnClick(R.id.btnRxPermission)public void RxPermissionCall() {    rxPermissions.request(Manifest.permission.CALL_PHONE).subscribe(new Consumer<Boolean>() {        @Override        public void accept(Boolean granted) throws Exception {            if (granted) {                startActivity(new Intent(Intent.ACTION_CALL).setData(Uri.parse("tel:" + 10000)));            }        }    });}

如果使用了java8 这段代码将会是这样非常简洁

@OnClick(R.id.btnRxPermission)public void RxPermissionCall() {    rxPermissions.request(Manifest.permission.CALL_PHONE).subscribe(granted -> {        if (granted) {            startActivity(new Intent(Intent.ACTION_CALL).setData(Uri.parse("tel:" + 10000)));        }    });}

RxPermissions 请求多个权限

rxPermissions    .requestEach(Manifest.permission.CAMERA,             Manifest.permission.READ_PHONE_STATE)    .subscribe(permission -> { // will emit 2 Permission objects        if (permission.granted) {           // `permission.name` is granted !        } else if (permission.shouldShowRequestPermissionRationale)           // Denied permission without ask never again        } else {           // Denied permission with ask never again           // Need to go to the settings        }    });

普通方法Fragment中运行时权限的特殊处理

在Fragment中申请权限，不要使用ActivityCompat.requestPermissions, 直接使用Fragment的requestPermissions方法，否则会回调到Activity的 onRequestPermissionsResult
如果在Fragment中嵌套Fragment，在子Fragment中使用requestPermissions方法，onRequestPermissionsResult不会回调回来，建议使用 getParentFragment().requestPermissions方法，
这个方法会回调到父Fragment中的onRequestPermissionsResult，加入以下代码可以把回调透传到子Fragment

@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions,         int[] grantResults) {  super.onRequestPermissionsResult(requestCode, permissions, grantResults);  List<Fragment> fragments = getChildFragmentManager().getFragments();  if (fragments != null) {      for (Fragment fragment : fragments) {          if (fragment != null) {              fragment.onRequestPermissionsResult(requestCode,permissions,grantResults);          }      }  }}

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