本文主要是介绍Android踩坑日记:android7.0动态相机权限,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
前提:
项目中使用的动态权限开源库github:https://github.com/yanzhenjie/AndPermission。
转载必须注明本文转自严振杰的博客:http://blog.csdn.net/yanzhenjie1003
添加依赖:
compile 'com.yanzhenjie:permission:1.0.3'
Android6.0:
众所周知,Android6.0时相机摄像头权限改成了动态权限申请。实际上在xml中加入CAMERA,WRITE_EXTERNAL_STORAGE全向后,直接调用摄像头。此时是没有“检查权限是否授予”,“没有授予再申请权限”的代码的。
但是(重点),我发现
1,在VIVO,华为等国产机会弹出对话框,
2,三星,sony等外国机不会有弹窗,调用摄像头直接崩溃,
3,魅族手机没有弹出,但是可以直接用摄像头。
我猜测是VIVO,华为定制系统帮助用户检查并申请了相机权限,外国机则没有,魅族可能直接授予权限。为统一,建议android6.0每次都检查并申请相机权限,如下.
/*** 申请相机权限** @param context* @param photoFromCamera 拍照保存图片路径*** @see {https://github.com/yanzhenjie/AndPermission}* */public static void requestCameraPermission(final Context context, final String photoFromCamera){//API >=23if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){AndPermission.with(context).requestCode(PERMISSION_MEDIA_REQUEST_CODE).permission(Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE).rationale(new RationaleListener() {@Overridepublic void showRequestPermissionRationale(int requestCode, Rationale rationale) {// 此对话框可以自定义,调用rationale.resume()就可以继续申请。AndPermission.rationaleDialog(context, rationale).show();}}).callback(new PermissionListener() {@Overridepublic void onSucceed(int requestCode, @NonNull List<String> grantPermissions) {// 权限申请成功回调。if(requestCode == PERMISSION_MEDIA_REQUEST_CODE) {UIRouter.JumpToCameraActivity(context,photoFromCamera);}}@Overridepublic void onFailed(int requestCode, @NonNull List<String> deniedPermissions) {// 权限申请失败回调。if(requestCode == PERMISSION_MEDIA_REQUEST_CODE) {ToastView.showToast(context,"拒绝授权");}}}).start();}}
/*** 调用系统拍照* @param saveImagePathFromCamera 拍照图片保存路径* @param context*/public static void JumpToCameraActivity(Context context, String saveImagePathFromCamera) {/*调用系统拍照*/Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);Uri uri = null; File imageFile = FileUtil.getFile(saveImagePathFromCamera);//此路径可以为storage/mounted/0/DCIM或其他外部存储路径uri = Uri.fromFile(imageFile); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); ((Activity) context).startActivityForResult(intent, CAMERA_REQUEST_CODE); }
Android7.0以上:
测试过程中,发现在android7.0以上的设备上使用摄像头时,直接崩溃掉了。原因是android7.0开始,相机拍照的图像保存路径必须在此应用的内部存储文件夹(storage/mounted/0/Android/data/包名//files/pictures文件夹)。需要使用FileProvider获取内部文件的uri
/*** 申请相机权限** @param context* @param photoFromCamera 拍照保存图片路径*** @see {https://github.com/yanzhenjie/AndPermission}* */public static void requestCameraPermission(final Context context, final String photoFromCamera){//API <23if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M){UIRouter.JumpToCameraActivity(context,photoFromCamera);}else {//API >=23AndPermission.with(context).requestCode(PERMISSION_MEDIA_REQUEST_CODE).permission(Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE).rationale(new RationaleListener() {@Overridepublic void showRequestPermissionRationale(int requestCode, Rationale rationale) {// 此对话框可以自定义,调用rationale.resume()就可以继续申请。AndPermission.rationaleDialog(context, rationale).show();}}).callback(new PermissionListener() {@Overridepublic void onSucceed(int requestCode, @NonNull List<String> grantPermissions) {// 权限申请成功回调。if(requestCode == .PERMISSION_MEDIA_REQUEST_CODE) {UIRouter.JumpToCameraActivity(context,photoFromCamera);}}@Overridepublic void onFailed(int requestCode, @NonNull List<String> deniedPermissions) {// 权限申请失败回调。if(requestCode ==PERMISSION_MEDIA_REQUEST_CODE) {ToastView.showToast(context,"拒绝授权");}}}).start();}}
/*** 调用系统拍照** @param context*/public static void JumpToCameraActivity(Context context, String saveImagePathFromCamera) {/*调用系统拍照*/Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);Uri uri = null;try {File imageFile = FileUtil.getFile(saveImagePathFromCamera);//API>=24 android 7.0if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){if (intent.resolveActivity(context.getPackageManager()) != null){String imageName = imageFile.getName();//7.0以上 的拍照文件必须在storage/emulated/0/Android/data/包名/files/pictures文件夹File storageDir = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);File file = FileUtil.getFile(storageDir+"/"+imageName);intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); //添加这一句表示对目标应用临时授权该Uri所代表的文件uri = FileProvider.getUriForFile(context,"包名.fileprovider",file);}}else {//<24 uri = Uri.fromFile(imageFile);}intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);((Activity) context).startActivityForResult(intent, CAMERA_REQUEST_CODE);} catch (IOException e) {e.printStackTrace();}}
1,在manifest.xml中加入:
<providerandroid:name="android.support.v4.content.FileProvider"android:authorities="包名.fileprovider"android:exported="false"android:grantUriPermissions="true"><meta-dataandroid:name="android.support.FILE_PROVIDER_PATHS"android:resource="@xml/file_paths" /></provider>
2,在res中新建xml文件夹,创建file_paths.xml文件
<?xml version="1.0" encoding="utf-8"?>
<resources><paths><external-pathname="camera_photos"<!--任意-->path="Android/data/包名/files/Pictures" /><!--相机图片保存图片路径,属于APP的存储空间--></paths></resources>
这篇关于Android踩坑日记:android7.0动态相机权限的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!