如何在 Android 6.0 Marshmallow 中访问相机？

Question

我是 Android 6.0 编码的新手，请提供以下代码的解决方案：

当我提供运行像 READ_EXTERNAL_STORAGE 和 WRITE_EXTERNAL_STORAGE 这样的时间权限时，它会显示像

这样的异常

java.lang.SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE flg=0x3 cmp=com.motorola.camera/.Camera clip={text/uri-list U:file:///storage/emulated/0/Pictures/MyAppNew%20File%20Upload/IMG_20160401_110234.jpg} (has extras) } from ProcessRecord{ed96564 26955:com.social.nocializer/u0a259} (pid=26955, uid=10259) with revoked permission android.permission.CAMERA

MediaStore.ACTION_IMAGE_CAPTURE 和 MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE 运行时间权限无效...

注意：READ_EXTERNAL_STORAGE打开图库时的作品

Answer 1

您必须为此管理运行时间权限，因为您在 AndroidManifest 中定义的任何权限都不会自动授予。所以像下面的方法你可以检查你的权限是否被批准

if (checkSelfPermission(Manifest.permission.CAMERA)
        != PackageManager.PERMISSION_GRANTED) {

    requestPermissions(new String[]{Manifest.permission.CAMERA},
            MY_REQUEST_CODE);
}

这里，MY_REQUEST_CODE是一个你可以定义的静态常量，它会在requestPermission对话框回调中再次使用。现在，您将需要对话结果的回调：

@Override
public void onRequestPermissionResult(int requestCode, String[] permissions, int[] grantResults) {
    if (requestCode == MY_REQUEST__CODE) {
        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // Now user should be able to use camera
        }
        else {
            // Your app will not have this permission. Turn off all functions 
            // that require this permission or it will force close like your 
            // original question
        }
    }
}

Answer 2

@Ronak 解决方案对我有用，但有一些以下更改，因为我们只需要检查那些高于 Android M.

的设备

 if( ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                        requestPermissions(new String[]{android.Manifest.permission.CAMERA},
                                5);
                    }
                }

并使用crl+o复制覆盖下面的方法，粘贴可能会出错:D

 @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 5) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Now user should be able to use camera
            }
            else {
                // Your app will not have this permission. Turn off all functions
                // that require this permission or it will force close like your
                // original question
            }
    }

如何在 Android 6.0 Marshmallow 中访问相机？

How to Access Camera in Android 6.0 Marshmallow?

camera

android

android-6.0-marshmallow