Android相机运行时权限错误？

概述我正在尝试在我的应用程序中使用Camera2api,即使我使用以下代码检查运行时相机权限.if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){if(ActivityCompat.checkSelfPermission(this,Manifest.permission.CAMERA)==PackageManager.PERMISSION_GRANTED){

我正在尝试在我的应用程序中使用Camera2 API,即使我使用以下代码检查运行时相机权限.

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {                cameraManager.openCamera(cameraID, stateCallBack, null);            } else {                if (shouldShowRequestPermissionRationale(Manifest.permission.CAMERA))                    Toast.makeText(getApplicationContext(), "PLease allow the app to use camera app", Toast.LENGTH_LONG).show();            }            ActivityCompat.requestPermissions(CaptureImageActivity.this,new String[]{"androID.manifest.permissin.CAMERA"}, CAMERA_REQUEST_RESulT);        } else {            cameraManager.openCamera(cameraID, stateCallBack, null);        }@OverrIDepublic voID onRequestPermissionsResult(int requestCode, String[] permission, int[] grantResult) {    switch (requestCode) {        case CAMERA_REQUEST_RESulT:            if (grantResult[0] == PackageManager.PERMISSION_GRANTED) {                try {                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {                      //this method is created because of openCamera method below i don't understand why this method is created                        return;                    }                    cameraManager.openCamera(cameraID, stateCallBack, null);                } catch (CameraAccessException e) {                    e.printstacktrace();                }            }            if (grantResult[0] != PackageManager.PERMISSION_GRANTED)                Toast.makeText(getApplicationContext(), "camera is not granted", Toast.LENGTH_LONG).show();            break;        default:            super.onRequestPermissionsResult(requestCode, permission, grantResult);            break;    }}

我还有AndroIDManifest.xml文件中包含的权限.

 <uses-permission androID:name="androID.permission.CAMERA" />

但是,当我运行我的应用程序时,权限对话框没有显示,但是摄像头未被授予toast显示.

1)为什么权限对话框没有显示？

2)即使没有对话框显示相机如何不被授予吐司出现？我搜索了很多,但没有任何帮助！

解决方法:

这是相机API的工作运行时权限

 private static final int PERMISSIONS_REQUEST_CAPTURE_IMAGE = 1; if (ContextCompat.checkSelfPermission(this,            Manifest.permission.CAMERA)            != PackageManager.PERMISSION_GRANTED) {        // User may have declined earlIEr, ask AndroID if we should show him a reason        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.CAMERA)) {            // show an explanation to the user            // Good practise: don't block thread after the user sees the explanation, try again to request the permission.        } else {            // request the permission.            // CALLBACK_NUMBER is a integer constants            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, PERMISSIONS_REQUEST_CAPTURE_IMAGE);            // The callback method gets the result of the request.        }    } else {    }@OverrIDe    public voID onRequestPermissionsResult ( int requestCode, String[] permissions,    int[] grantResults){        switch (requestCode) {            case PERMISSIONS_REQUEST_CAPTURE_IMAGE: {                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {                    // permission was granted                     Log.d("", "permission granted success");                } else {                    // permission denIEd                    Log.d("", "permission denIEd");                }                return;            }        }    }

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