简单明了的权限申请库，再结合rxjava的话，用起来，一个字：爽

RxView.clicks(findViewById(R.id.enableCamera))
    .compose(rxPermissions.ensure(Manifest.permission.CAMERA))
    .subscribe(granted -> {        // R.id.enableCamera has been clicked
    });

rxPermissions
    .request(Manifest.permission.CAMERA,             Manifest.permission.READ_PHONE_STATE)
    .subscribe(granted -> {        if (granted) {           // All requested permissions are granted
        } else {           // At least one permission is denied
        }
    });

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
        }
    });

rxPermissions
    .requestEachCombined(Manifest.permission.CAMERA,             Manifest.permission.READ_PHONE_STATE)
    .subscribe(permission -> { // will emit 1 Permission object
        if (permission.granted) {           // All permissions are granted !
        } else if (permission.shouldShowRequestPermissionRationale)           // At least one denied permission without ask never again
        } else {           // At least one denied permission with ask never again
           // Need to go to the settings
        }
    });

原文链接：http://www.apkbus.com/blog-9466-78103.html