Saturday, April 22, 2017

Register my app as camera app in Android

By Hường Hana 9:00 AM Leave a Comment

I got help from android: how to register my app as "camera app" but still it's not properly working

I have tried with my Contact App to add photo to my existing saved Contact, whom URI will be generated like below

content://com.google.android.contacts.files/my_cache/ContactPhoto-IMG_20170412_123034.jpg

but I can not access to that Contact app's directory, so I can not save photo over that URI and if I do I will get FIleNotFoundException,

Uri saveUri = (Uri) getIntent().getExtras().getParcelable(MediaStore.EXTRA_OUTPUT);  if (saveUri != null) {     // Save the bitmap to the specified URI (use a try/catch block)     outputStream = getContentResolver().openOutputStream(saveUri); <-----File Not Found Exception

Menifest is 

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />   <activity             android:name=".CameraSelfieActivity"             android:clearTaskOnLaunch="true"             android:icon="@drawable/icon_chooser_selfie"             android:label="My Camera"             android:screenOrientation="portrait">             <intent-filter>                 <action android:name="android.media.action.IMAGE_CAPTURE" />                  <category android:name="android.intent.category.DEFAULT" />             </intent-filter> </activity>

Logcat is 

java.io.FileNotFoundException: /my_cache/ContactPhoto-IMG_20170417_205819.jpg: open failed: ENOENT (No such file or directory)     at libcore.io.IoBridge.open(IoBridge.java:452)     at java.io.FileInputStream.<init>(FileInputStream.java:76)     at com.example.CameraSelfieBaseHelper.copyFileToUri(CameraSelfieBaseHelper.java:391)     at com.example.CameraSelfieBaseHelper.processImageReady(CameraSelfieBaseHelper.java:364)     at com.example.CameraSelfieBaseHelper.onImageReady(CameraSelfieBaseHelper.java:266)     at com.example.captureImage(CmGLSV.java:50)     at com.example.surface.CmGLSV.onDrawFrame(CmGLSV.java:135)     at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1535)     at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240) Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)     at libcore.io.Posix.open(Native Method)     at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)     at libcore.io.IoBridge.open(IoBridge.java:438)

but same functionality is achieved by default Camera App

will anybody has suggestion how to resolve this issue

Thanks,

1 Answers

Answers 1

The problem is that your app does not have the required security privileges to directly override the file (contact photo) that is externally managed by the contacts app.

What you can do to achieve the desired result is:

a. Add the necessary permissions to read/write Contacts data through the ContentResolver API

<uses-spermission                 android:name="android.permission.WRITE_CONTACTS" />  <uses-permission             android:name="android.permission.READ_CONTACTS" />

You can find more information on interacting with Contacts data via the Android Developer

b. Identify the ID of the contact you want to update with the new photo

c. Update the contact's photo through it's ContentResolver API

There's this example open-source project on github that does just that

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