Android- Image prise avec l'intention de la caméra est de mauvaise qualité sur ImageView (7.0+)

Question

Je sais qu'il y a beaucoup d'exemples de cela, mais je n'ai pas trouvé un exemple solide qui fonctionne avec 7.0+. Je sais que je mets la vignette de l'image plutôt que l'original, mais je ne suis pas sûr de savoir comment l'obtenir.

Voici mon code:

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}, 
        CAMERA_REQUEST_CODE); 

     } 

    }else{ 
     Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     if (takePictureIntent.resolveActivity(getPackageManager()) != null) { 
      startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE); 
     } 
    } 

    } 


@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == CAMERA_REQUEST_CODE&& resultCode == RESULT_OK && data != null) { 

     Bitmap bitmap = (Bitmap) data.getExtras().get("data"); 
     mImageView.setImageBitmap(bitmap); 




    }} 

Answer 1

Si vous demandez « comment puis-je obtenir une image complète de la résolution », l'offre EXTRA_OUTPUT sur la ACTION_IMAGE_CAPTUREIntent, puis regardez à cet endroit pour l'image lorsque onActivityResult() est appelé avec RESULT_OK pour votre demande.

This sample app illustre la technique, en utilisant FileProvider pour une meilleure compatibilité sur Android 7.0+:

/*** 
Copyright (c) 2008-2017 CommonsWare, LLC 
Licensed under the Apache License, Version 2.0 (the "License"); you may not 
use this file except in compliance with the License. You may obtain a copy 
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required 
by applicable law or agreed to in writing, software distributed under the 
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS 
OF ANY KIND, either express or implied. See the License for the specific 
language governing permissions and limitations under the License. 

Covered in detail in the book _The Busy Coder's Guide to Android Development_ 
https://commonsware.com/Android 
*/ 

package com.commonsware.android.camcon; 

import android.Manifest; 
import android.app.Activity; 
import android.content.ActivityNotFoundException; 
import android.content.ClipData; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.content.pm.ResolveInfo; 
import android.net.Uri; 
import android.os.Build; 
import android.os.Bundle; 
import android.provider.MediaStore; 
import android.support.v4.content.FileProvider; 
import android.widget.Toast; 
import java.io.File; 
import java.util.List; 

public class MainActivity extends Activity { 
    private static final String EXTRA_FILENAME= 
    "com.commonsware.android.camcon.EXTRA_FILENAME"; 
    private static final String FILENAME="CameraContentDemo.jpeg"; 
    private static final int CONTENT_REQUEST=1337; 
    private static final String AUTHORITY= 
    BuildConfig.APPLICATION_ID+".provider"; 
    private static final String PHOTOS="photos"; 
    private File output=null; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    if (savedInstanceState==null) { 
     output=new File(new File(getFilesDir(), PHOTOS), FILENAME); 

     if (output.exists()) { 
     output.delete(); 
     } 
     else { 
     output.getParentFile().mkdirs(); 
     } 

     Intent i=new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     Uri outputUri=FileProvider.getUriForFile(this, AUTHORITY, output); 

     i.putExtra(MediaStore.EXTRA_OUTPUT, outputUri); 

     if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.LOLLIPOP) { 
     i.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION); 
     } 
     else if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.JELLY_BEAN) { 
     ClipData clip= 
      ClipData.newUri(getContentResolver(), "A photo", outputUri); 

     i.setClipData(clip); 
     i.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION); 
     } 
     else { 
     List<ResolveInfo> resInfoList= 
      getPackageManager() 
      .queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY); 

     for (ResolveInfo resolveInfo : resInfoList) { 
      String packageName = resolveInfo.activityInfo.packageName; 
      grantUriPermission(packageName, outputUri, 
      Intent.FLAG_GRANT_WRITE_URI_PERMISSION); 
     } 
     } 

     try { 
     startActivityForResult(i, CONTENT_REQUEST); 
     } 
     catch (ActivityNotFoundException e) { 
     Toast.makeText(this, R.string.msg_no_camera, Toast.LENGTH_LONG).show(); 
     finish(); 
     } 
    } 
    else { 
     output=(File)savedInstanceState.getSerializable(EXTRA_FILENAME); 
    } 
    } 

    @Override 
    protected void onSaveInstanceState(Bundle outState) { 
    super.onSaveInstanceState(outState); 

    outState.putSerializable(EXTRA_FILENAME, output); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, 
            Intent data) { 
    if (requestCode == CONTENT_REQUEST) { 
     if (resultCode == RESULT_OK) { 
     Intent i=new Intent(Intent.ACTION_VIEW); 
     Uri outputUri=FileProvider.getUriForFile(this, AUTHORITY, output); 

     i.setDataAndType(outputUri, "image/jpeg"); 
     i.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 

     try { 
      startActivity(i); 
     } 
     catch (ActivityNotFoundException e) { 
      Toast.makeText(this, R.string.msg_no_viewer, Toast.LENGTH_LONG).show(); 
     } 

     finish(); 
     } 
    } 
    } 
}