默認相機在Android中拍攝照片

Question

如何使用默認相機在android中拍照？

Answer 1

Uri imageUri; 
final int TAKE_PICTURE = 115; 

public void capturePhoto(View view) { 
    Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); 
    File photoFile = new File(Environment.getExternalStorageDirectory(), "Photo.png"); 
    intent.putExtra(MediaStore.EXTRA_OUTPUT, 
      Uri.fromFile(photoFile)); 
    imageUri = Uri.fromFile(photoFile); 
    startActivityForResult(intent, TAKE_PICTURE); 
} 

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    switch (requestCode) { 
     case TAKE_PICTURE: 
      if (resultCode == Activity.RESULT_OK) { 
       Uri selectedImageUri = imageUri; 
       //Do what ever you want 
     } 
    } 
} 

Answer 2

它是用來打開攝像頭的目的是

buttonCapturePhoto.setOnClickListener(new OnClickListener() { 
     @Override 
     public void onClick(View arg0) { 
      Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
      startActivityForResult(intent, CAPTURE_IMAGE); 
     } 
    }); 

，讓你拍攝後的圖像的代碼是

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    Uri uriImage; 
    InputStream inputStream = null; 
    if ((requestCode == SELECT_IMAGE || requestCode == CAPTURE_IMAGE) && resultCode == Activity.RESULT_OK) { 
     uriImage = data.getData(); 
     try { 
      inputStream = getContentResolver().openInputStream(uriImage); 
      Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, options); 
      imageView.setImageBitmap(bitmap); 
     } catch (NullPointerException e) { 
      e.printStackTrace(); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE); 
     imageView.setAdjustViewBounds(true); 
    } 
} 

Answer 3

這是一個簡單的例子。總之，這會將圖像作爲一個小的位圖返回。如果要檢索全尺寸的圖像，會稍微複雜一些。

ImageView takePhotoView = (ImageView) findViewById(R.id.iwTakePicture); 
Bitmap imageBitmap = null; 
takePhotoView.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub    
       dispatchTakePictureIntent(0); 
      } 
     }); 

    private void dispatchTakePictureIntent(int actionCode) { 
      Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
      startActivityForResult(takePictureIntent, actionCode);  
     } 

    private void handleSmallCameraPhoto(Intent intent) { 
     Bundle extras = intent.getExtras(); 
     this.imageBitmap = (Bitmap) extras.get("data"); 
     takePhotoView.setImageBitmap(imageBitmap); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if(resultCode == RESULT_OK) 
      handleSmallCameraPhoto(data); 
    }