Android 7.0 获取相机、相册

浅浅的花香味﹌ 2022-06-07 03:22 284阅读 0赞

Android 获取相机 ：

需要的的权限   Manfest.permission.WRITE\_EXTERNAL\_STORAGE

需要注意运行时权限  intent.addFlags(Intent. *FLAG\_GRANT\_READ\_URI\_PERMISSION* ) //增加读取 Uri 权限

以及 FileProvider 的使用

获取相册及相机方法

*/\*\**

*\* 获取相机 已适配7.0*

*\**

*\** ***@param*** *activity*

*\*/*

public synchronized void userCamera (Activity activity) \{

if  (!EaseCommonUtils. *isSdcardExist* ()) \{

Toast. *makeText* (activity , R.string. *sd\_card\_does\_not\_exist* , Toast. *LENGTH\_SHORT* ).show() ;

return;

MyRequestPermission. *getInstance* (activity).setOnRequestPermissionListener(result -> \{

if  (result) \{

camera( activity ) ;

\}  else \{

Toast. *makeText* ( activity , "读取SD卡权限申请被拒,相机无法启动" , Toast. *LENGTH\_SHORT* ).show() ;

\}) ;

boolean  checkPermission = MyRequestPermission. *getInstance* (activity).isCheckPermission( new String\[\]\{Manifest.permission. *WRITE\_EXTERNAL\_STORAGE* \}) ;

Observable<Boolean> observable = Observable. *create* (e -> e.onNext( checkPermission )) ;

observable.filter(aBoolean -> \{

if  (!aBoolean)

Toast. *makeText* ( activity , "读取SD卡权限申请被拒,相机无法启动" , Toast. *LENGTH\_SHORT* ).show() ;

return  aBoolean ;

\}).subscribe(aBoolean -> camera( activity )) ;

private void camera (Activity activity) \{

Intent intent = new  Intent(MediaStore. *ACTION\_IMAGE\_CAPTURE* ) ;

file =  new File(Environment. *getExternalStorageDirectory* ().getAbsolutePath() + "/test/"  \+ System. *currentTimeMillis* () + ".jpg" ) ;

file .getParentFile().mkdirs() ;

Uri uriForFile = FileProvider. *getUriForFile* (activity , "com.tiancai.tcggsc.fileprovider" , file ) ;

intent.addFlags(Intent. *FLAG\_GRANT\_READ\_URI\_PERMISSION* ) //增加读取 Uri 权限

.putExtra(MediaStore. *EXTRA\_OUTPUT* , uriForFile) ;

activity.startActivityForResult(intent , Constant. *REQUEST\_CAMERA* ) ;

*/\*\**

*\** *打开相册*

*\** ***@param*** *activity* *当前activity*

*\*/*

public void  openPic (Activity activity) \{

if  (!EaseCommonUtils. *isSdcardExist* ()) \{//是否存在SD卡

Toast. *makeText* (activity , R.string. *sd\_card\_does\_not\_exist* , Toast. *LENGTH\_SHORT* ).show() ;

return;

MyRequestPermission. *getInstance* (activity).setOnRequestPermissionListener(result -> \{

if  (result) \{

openPicture( activity ) ;

\}  else \{

Toast. *makeText* ( activity , "读取SD卡权限申请被拒,无法打开相册" , Toast. *LENGTH\_SHORT* ).show() ;

\}) ;

boolean  checkPermission = MyRequestPermission. *getInstance* (activity).isCheckPermission( new String\[\]\{Manifest.permission. *WRITE\_EXTERNAL\_STORAGE* \}) ;

Observable<Boolean> observable = Observable. *create* (e -> e.onNext( checkPermission )) ;

observable.filter(aBoolean -> \{

if  (!aBoolean)

Toast. *makeText* ( activity , "读取SD卡权限申请被拒,无法打开相册" , Toast. *LENGTH\_SHORT* ).show() ;

return  aBoolean ;

\}).subscribe(aBoolean -> openPicture( activity )) ;

private void  openPicture (Activity activity)\{

Intent photoPickerIntent =  new Intent(Intent. *ACTION\_PICK* , android.provider.MediaStore.Images.Media. *EXTERNAL\_CONTENT\_URI* ) ;

photoPickerIntent.setAction(Intent. *ACTION\_GET\_CONTENT* ) ;

photoPickerIntent.setType( "image/\*" ) ;

activity.startActivityForResult(photoPickerIntent , Constant. *REQUEST\_PHOTO\_ALBUM* ) ;

activity 方法

@Override

public void onRequestPermissionsResult ( int requestCode , @android.support.annotation.NonNull String\[\] permissions , @android.support.annotation.NonNull int \[\] grantResults) \{

super .onRequestPermissionsResult(requestCode , permissions , grantResults) ;

MyRequestPermission. *getInstance* ( this ).onRequestPermissionsResult(requestCode , permissions , grantResults) ;

@Override

protected void onActivityResult ( int requestCode , int resultCode , Intent data) \{

super .onActivityResult(requestCode , resultCode , data) ;

if (resultCode == *RESULT\_OK* ) \{

switch (requestCode) \{

case Constant. *REQUEST\_CAMERA* :

File file = FileUtil. *getInstance* ().getFile() ;

imgSetUserIcon .setImageURI(Uri. *fromFile* (file)) ;

//在手机相册中显示刚拍摄的图片

Intent mediaScanIntent = new  Intent(Intent. *ACTION\_MEDIA\_SCANNER\_SCAN\_FILE* ) ;

Uri contentUri = Uri. *fromFile* (file) ;

mediaScanIntent.setData(contentUri) ;

sendBroadcast(mediaScanIntent) ;

break;

case Constant. *REQUEST\_PHOTO\_ALBUM* :

if (Build.VERSION. *SDK\_INT* >=  19 ) \{//注意4.4读取图片路径 不相同

handleImageOnKitKat(data) ;

\} else  \{

handleImageBeforeKitKat(data) ;

break;

@RequiresApi ( api = Build.VERSION\_CODES. *KITKAT* )

private void handleImageOnKitKat (Intent data) \{

String imagePath = null;

Uri uri = data.getData() ;

if (DocumentsContract. *isDocumentUri* ( this, uri)) \{

String docId = DocumentsContract. *getDocumentId* (uri) ;

if ( "com.android.providers.media.documents" .equals(uri.getAuthority())) \{

String id = docId.split( ":" )\[ 1 \] ;

String selection = MediaStore.Images.Media. *\_ID* \+  "=" \+ id ;

imagePath = getImagePath(MediaStore.Images.Media. *EXTERNAL\_CONTENT\_URI* , selection) ;

\} else if  ( "com.android.provider.downloads.documents" .equals(uri.getAuthority())) \{

Uri contentUri = ContentUris. *withAppendedId* (Uri. *parse* ( "content://downloads/public\_downloads" ) , Long. *valueOf* (docId)) ;

imagePath = getImagePath(contentUri , null ) ;

\} else if  ( "content" .equalsIgnoreCase(uri.getScheme())) \{

imagePath = getImagePath(uri , null ) ;

\} else if  ( "file" .equalsIgnoreCase(uri.getScheme())) \{

imagePath = uri.getPath() ;

displayImage(imagePath) ;

private void handleImageBeforeKitKat (Intent data) \{

String imagePath = null;

Uri uri = data.getData() ;

imagePath = getImagePath(uri , null ) ;

displayImage(imagePath) ;

// getImagePath的实现:

private String  getImagePath (Uri uri , String selection) \{

String Path = null;

Cursor cursor = getContentResolver().query(uri , null, selection , null, null ) ;

if (cursor !=  null ) \{

if (cursor.moveToFirst()) \{

Path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media. *DATA* )) ;

cursor.close() ;

return Path ;

// displayImage的实现:

private void displayImage (String Path) \{

Bitmap bm = BitmapFactory. *decodeFile* (Path) ;

imgSetUserIcon .setImageBitmap(bm) ;

Android 7.0 获取相机、相册

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