采取图像并将其转换为base64问题

对不起，问傻question.but它解决了可是我的me.please帮助我曾试图计算器上所有的代码，并按照其他教程，但它在all.i不会帮助我从拍摄图像galary并转换为Base64拍摄图像时的相机，但它为什么不上galary工作，我不知道，请帮助我，这工作完全正常;（采取图像并将其转换为base64问题

这是代码选择图像

private void selectImage() { 
     final CharSequence[] items = { "Take Photo", "Choose from Library", 
       "Cancel" }; 

     AlertDialog.Builder builder = new AlertDialog.Builder(TestFragment.this); 
     builder.setTitle("Add Photo!"); 
     builder.setItems(items, new DialogInterface.OnClickListener() { 
      @Override 
      public void onClick(DialogInterface dialog, int item) { 
       boolean result= Utility.checkPermission(TestFragment.this); 

       if (items[item].equals("Take Photo")) { 
        userChoosenTask ="Take Photo"; 
        if(result) 
         cameraIntent(); 

       } else if (items[item].equals("Choose from Library")) { 
        userChoosenTask ="Choose from Library"; 
        if(result) 
         galleryIntent(); 

       } else if (items[item].equals("Cancel")) { 
        dialog.dismiss(); 
       } 
      } 
     }); 
     builder.show(); 
    }

后这

private void galleryIntent() 
    { 
     Intent intent = new Intent(); 
     intent.setType("image/*"); 
     intent.setAction(Intent.ACTION_GET_CONTENT);// 
     startActivityForResult(Intent.createChooser(intent, "Select File"),SELECT_FILE); 
    } 

    private void cameraIntent() 
    { 
     Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     startActivityForResult(intent, REQUEST_CAMERA); 
    } 

    @Override 
    public void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 

     if (resultCode == Activity.RESULT_OK) { 
      if (requestCode == SELECT_FILE) 
       onSelectFromGalleryResult(data); 
      else if (requestCode == REQUEST_CAMERA) 
       onCaptureImageResult(data); 
     } 
    } 

    private void onCaptureImageResult(Intent data) { 
     bitmap = (Bitmap) data.getExtras().get("data"); 
     ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 
     bitmap.compress(Bitmap.CompressFormat.JPEG, 90, bytes); 

     File destination = new File(Environment.getExternalStorageDirectory(), 
       System.currentTimeMillis() + ".jpg"); 

     FileOutputStream fo; 
     try { 
      destination.createNewFile(); 
      fo = new FileOutputStream(destination); 
      fo.write(bytes.toByteArray()); 
      fo.close(); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     imgvcomp.setImageBitmap(bitmap); 

     String img=getStringImage(bitmap); 

     Log.v(TAG,"base64"+img);//perfectly string base64 to image 


    } 

    @SuppressWarnings("deprecation") 
    private void onSelectFromGalleryResult(Intent data) { 


     if (data != null) { 
      try { 
       bitmap = MediaStore.Images.Media.getBitmap(getApplicationContext().getContentResolver(), data.getData()); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 

     imgvcomp.setImageBitmap(bitmap); 
     String img=getStringImage(bitmap); 

      Log.v(TAG,"base64"+img);//checking in log base64 string to image cropeed image found 

    } 




    public String getStringImage(Bitmap bmp){ 
     ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
     bmp.compress(Bitmap.CompressFormat.JPEG, 90, baos); 
     byte[] imageBytes = baos.toByteArray(); 

     String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT); 
     return encodedImage; 
    } 
    private void showToastMessage(String message) { 
     Log.v(TAG, String.format("showToastMessage :: message = %s", message)); 
//  Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show(); 
    }

为什么我找到了裁剪的图像从galary选择后？有错误日志中没有错误这里是logcat的

E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/ 
W/FlurryAgent: Flurry session paused for 
1 and remote module com.google.android.gms.tagmanager:8 
Selected remote version of com.google.android.gms.tagmanager, version >= 8 
No container asset found in /assets/containers. Checking top level /assets directory for container assets. 
Tag Manager's event handler WILL NOT be installed (no container loaded) 
Tag Manager initilization took 274ms 
Using measurement service 
Connecting to remote service 
Connected to remote service 
Processing queued up service tasks: 1 
Suspending all threads took: 25.809ms 
V/help: /9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsK 
                   CwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT/2wBDAQMEBAUEBQkFBQkUDQsNFBQUFBQU 
                   FBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBT/wAARCAzABywDASIA 
                   AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA 
                   AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 
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来源

2017-01-23 Pratik Mohanrao Gondil

那么你可以说究竟是什么不起作用。应用程序部队是关闭还是什么？ –

你获得了位图图像吗？意味着位图=（位图）data.getExtras（）。get（“data”）;这行返回null？ –

@sushantgosavi上面的代码，如果我写，你届时提及申请强制停止它是返回null在galary结果不是在捕捉结果 –

您可以使用下面的代码：在onActivityResult下面的代码

public static String encodeTobase64(Bitmap image) { 
    Bitmap immagex=image; 
    ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
    immagex.compress(Bitmap.CompressFormat.JPEG, 100, baos); 
    byte[] b = baos.toByteArray(); 
    String imageEncoded = Base64.encodeToString(b,Base64.DEFAULT); 

    Log.e("LOOK", imageEncoded); 
    return imageEncoded; 
}

使用（）

InputStream imageStream = null; 
     try { 
      imageStream = this.getContentResolver().openInputStream(selectedImage); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } 
     Bitmap yourSelectedImage = BitmapFactory.decodeStream(imageStream); 
     encodeTobase64(yourSelectedImage);

来源

2017-01-23 13:09:41

它解决了这个问题，:) –

这是我怎么做我我的画廊意图onActivityResult。

String imagePath = ImageUtil.getRealPathFromURI(getActivity(), data.getData());

然后将整个东西转换为位图。

Bitmap bitmap = BitmapFactory.decodeFile(imagePath);

这是我从ImageUtil类的getRealPathFromURI方法。

public static String getRealPathFromURI(Context context, Uri contentURI) { 
     String result = null; 
      String[] projection = {MediaStore.Images.Media.DATA}; 

      try { 
       Cursor cursor = context.getContentResolver().query(contentURI, projection, null, null, null); 
       cursor.moveToFirst(); 

       int columnIndex = cursor.getColumnIndex(projection[0]); 
       result = cursor.getString(columnIndex); 
       cursor.close(); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
      return result; 
    }

这里是我从位图到base64的转换。

public static String getBase64(Bitmap bitmap) { 
if (bitmap != null) { 

    ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); 


    return Base64.encodeToString(baos.toByteArray(), Base64.DEFAULT); 
} 

return null; 
}

来源

2017-01-23 07:41:42 Bryan

它返回null给我（; –

没有你说得对，正如我所说的那样？ – Bryan

尝试......

public String getStringImage(Bitmap bmp){ 
     ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
     bmp.compress(Bitmap.CompressFormat.JPEG, 100, baos); 
     byte[] imageBytes = baos.toByteArray(); 
     String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT); 
     return encodedImage; 
    }

来源

2017-01-23 07:47:52

已经试过这个不行。:) –

@PratikMohanraoGondil我认为你有没有问题，转换 –

，但它是为我工作.. –

下面是类似的代码。我在我的应用程序中实现了相同的功能。您可以从图库或照相机中选择图像，并且可以将其转换为基本64.尝试此操作适用于我。希望它为你工作了

import android.content.ActivityNotFoundException; 
import android.content.ComponentName; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.content.pm.ResolveInfo; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.os.Bundle; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.support.design.widget.TextInputLayout; 
import android.support.v7.app.ActionBar; 
import android.support.v7.app.AlertDialog; 
import android.support.v7.app.AppCompatActivity; 
import android.util.Base64; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.AutoCompleteTextView; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

import java.io.ByteArrayOutputStream; 
import java.io.File; 
import java.util.ArrayList; 
import java.util.List; 

import in.invis.organickerala.utilities.CropOption; 
import in.invis.organickerala.R; 

public class Profile_Activity extends AppCompatActivity { 

    private static final int PICK_FROM_CAMERA = 1; 
    private static final int CROP_FROM_CAMERA = 2; 
    private static final int PICK_FROM_FILE = 3; 
    final String[] items = new String[]{"Take From Camera", "Select From Gallery"}; 

    ImageView picture; 
    AlertDialog.Builder builder; 
    ArrayAdapter<String> adapter; 
    private AccountManager mAccountManager; 
    private int PICK_IMAGE_REQUEST = 1; 
    private SharedPreferences mPreferences, myPrefs; 
    private SharedPreferences.Editor myPrefsEdit; 
    private Uri mImageCaptureUri; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_profile); 
     adapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_item, items); 
     builder = new AlertDialog.Builder(this); 
     ActionBar actionBar = getSupportActionBar(); 
     if (actionBar != null) { 
      // Show the Up button in the action bar. 
      actionBar.setDisplayHomeAsUpEnabled(true); 
      actionBar.setTitle("Profile"); 
     } 
     // Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     // setSupportActionBar(toolbar); 
     // getSupportActionBar().setDisplayHomeAsUpEnabled(true); 



     mPreferences = getSharedPreferences("CurrentUser", MODE_PRIVATE); 
     myPrefs = getSharedPreferences("URI", MODE_PRIVATE); 
     myPrefsEdit = myPrefs.edit(); 

     picture = (ImageView) findViewById(R.id.picture); 
     picture.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 


       builder.setTitle("Select Image"); 
       builder.setAdapter(adapter, new DialogInterface.OnClickListener() { 
        public void onClick(DialogInterface dialog, int item) { //pick from camera 
         if (item == 0) { 
          Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 

          mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), 
            "tmp_avatar_" + String.valueOf(System.currentTimeMillis()) + ".jpg")); 

          intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageCaptureUri); 

          try { 
           intent.putExtra("return-data", true); 

           startActivityForResult(intent, PICK_FROM_CAMERA); 
          } catch (ActivityNotFoundException e) { 
           e.printStackTrace(); 
          } 
         } else { //pick from file 
          Intent intent = new Intent(); 

          intent.setType("Image/*"); 
          intent.setAction(Intent.ACTION_GET_CONTENT); 

          startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE); 
         } 
        } 
       }); 

       final AlertDialog dialog = builder.create(); 

       picture.setOnClickListener(new View.OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         dialog.show(); 
        } 
       }); 

       //END CAMERA STUFF 

      }// End OnCreate 


     }); 







     String temp = myPrefs.getString("url", "defaultString"); 
     try { 
      byte[] encodeByte = Base64.decode(temp, Base64.DEFAULT); 
      Bitmap bitmap = BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length); 
      picture.setImageBitmap(bitmap); 
     } catch (Exception e) { 
      e.getMessage(); 
     } 

    } 

    @Override 
    public void onBackPressed() { 
     super.onBackPressed(); 
     Intent intent = new Intent(this, MainActivity.class); 
     startActivity(intent); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     switch (requestCode) { 
      case PICK_FROM_CAMERA: 

       doCrop(); 

       break; 

      case PICK_FROM_FILE: 
       mImageCaptureUri = data.getData(); 

       doCrop(); 

       break; 

      case CROP_FROM_CAMERA: 
       Bundle extras = data.getExtras(); 

       if (extras != null) { 
        Bitmap photo = extras.getParcelable("data"); 
        ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
        photo.compress(Bitmap.CompressFormat.PNG, 100, baos); 
        byte[] b = baos.toByteArray(); 
        String temp = Base64.encodeToString(b, Base64.DEFAULT); 
        myPrefsEdit.putString("url", temp); 
        myPrefsEdit.commit(); 

        picture.setImageBitmap(photo); 
       } 

       File f = new File(mImageCaptureUri.getPath()); 

       if (f.exists()) f.delete(); 

       break; 

     } 
    } 



    private void doCrop() { 
     final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>(); 

     Intent intent = new Intent("com.android.camera.action.CROP"); 
     intent.setType("Image/*"); 

     List<ResolveInfo> list = getPackageManager().queryIntentActivities(intent, 0); 

     int size = list.size(); 

     if (size == 0) { 
      Toast.makeText(this, "Can not find Image crop app", Toast.LENGTH_SHORT).show(); 

      return; 
     } else { 
      intent.setData(mImageCaptureUri); 

      intent.putExtra("outputX", 300); 
      intent.putExtra("outputY", 300); 
      intent.putExtra("aspectX", 1); 
      intent.putExtra("aspectY", 1); 
      intent.putExtra("scale", true); 
      intent.putExtra("return-data", true); 

      if (size != 0) { 
       Intent i = new Intent(intent); 
       ResolveInfo res = list.get(0); 

       i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name)); 

       startActivityForResult(i, CROP_FROM_CAMERA); 
      } 
     } 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // handle arrow click here 
     if (item.getItemId() == android.R.id.home) { 
      Intent intent = new Intent(Profile_Activity.this,MainActivity.class); 
      startActivity(intent); 
     } 

     return super.onOptionsItemSelected(item); 
    } 



}

来源

2017-01-23 07:49:48 vishnumm93

采取图像并将其转换为base64问题

回答

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