採取圖像並將其轉換爲base64問題

對不起，問傻question.but它解決了可是我的me.please幫助我曾試圖計算器上所有的代碼，並按照其他教程，但它在all.i不會幫助我從拍攝圖像galary並轉換爲Base64拍攝圖像時的相機，但它爲什麼不上galary工作，我不知道，請幫助我，這工作完全正常;（採取圖像並將其轉換爲base64問題

這是代碼選擇圖像

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(); 
    }

後這

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(); 
    }

爲什麼我找到了裁剪的圖像從galary選擇後？有錯誤日誌中沒有錯誤這裏是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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                   vX7kIwYgIynAwMtz2yNx6dPrmvtf47eIYtJ0m6lmPkoMhsDJUAZJA9gDkV8L+LbndLJ5oLbpCwwP 
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                   296yLi0fzgpIaOMZZsfez6emK3bin7xEU1oyrDGsiZ6M3JY+nr9aLhZIE2sBscHbgYB96ZNFKroU 
                   f92zAccE47USpNKrAjB/2hgA9v8A9YrGXWz3LirO6GCfklwOBwB0BqL7M8agSoVZ/m3ZyMe3tTJI 
                   ZGbAIDr1BPB/xqWRXKNuXK8cdzWHLrobRtEjhHyoHIV1Odw5B/8A1U2VpJI9y4KE9Scfj709JUUc 
                   qE3c7fSmy7ZI2LP+742oB90+3fn3rFxfM77aGyd1oVfUAhj7cCpbYSNEysQrHjaOlQyKA4K5XA65 
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來源

2017-01-23 Pratik Mohanrao Gondil

那麼你可以說究竟是什麼不起作用。應用程序部隊是關閉還是什麼？ –

你獲得了位圖圖像嗎？意味着位圖=（位圖）data.getExtras（）。get（「data」）;這行返回null？ –

@sushantgosavi上面的代碼，如果我寫，你屆時提及申請強制停止它是返回null在galary結果不是在捕捉結果 –

您可以使用下面的代碼：在onActivityResult下面的代碼

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);

來源

2017-01-23 13:09:41

它解決了這個問題，:) –

這是我怎麼做我我的畫廊意圖onActivityResult。

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

然後將整個東西轉換爲位圖。

Bitmap bitmap = BitmapFactory.decodeFile(imagePath);

這是我從ImageUtil類的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; 
    }

這裏是我從位圖到base64的轉換。

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; 
}

來源

2017-01-23 07:41:42 Bryan

它返回null給我（; –

沒有你說得對，正如我所說的那樣？ – Bryan

嘗試......

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; 
    }

來源

2017-01-23 07:47:52

已經試過這個不行。:) –

@PratikMohanraoGondil我認爲你有沒有問題，轉換 –

，但它是爲我工作.. –

下面是類似的代碼。我在我的應用程序中實現了相同的功能。您可以從圖庫或照相機中選擇圖像，並且可以將其轉換爲基本64.嘗試此操作適用於我。希望它爲你工作了

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); 
    } 



}

來源

2017-01-23 07:49:48 vishnumm93

採取圖像並將其轉換爲base64問題

回答

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