Android从Camera中获取图片的两种方法

jopen 8年前

方法一:

此方法会由Camera直接产生照片回传给应用程序,但是返回的是压缩图片,显示不清晰

 try {     Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);     startActivityForResult(cameraIntent, CAMERA_WITH_DATA);    } catch (ActivityNotFoundException e) {     e.printStackTrace();    }

 

Bundle bundle = data.getExtras();  bmp_selectedPhoto = (Bitmap) bundle.get("data");  if (bmp_selectedPhoto != null)      bmp_selectedPhoto.recycle();  bmp_selectedPhoto = (Bitmap) data.getExtras().get("data");  // int scale = ImageThumbnail.reckonThumbnail(bitMap.getWidth(),  // bitMap.getHeight(), 500, 600);  // bitMap = ImageThumbnail.PicZoom(bitMap,  // (int) (bitMap.getWidth() / scale),  // (int) (bitMap.getHeight() / scale));  // bitMap = ThumbnailUtils.extractThumbnail(bitMap, 200, 200);  if(bmp_selectedPhoto != null){      home_view.setBackground(new BitmapDrawable(getResources(),      bmp_selectedPhoto));  }

方法二:

此方法所拍即所得,但是会在Sd卡上产生临时文件

Intent cameraIntent = new Intent(      android.provider.MediaStore.ACTION_IMAGE_CAPTURE);      File appDir = new File(Environment.getExternalStorageDirectory()      + "/KengDieA");        if (!appDir.exists()) {     appDir.mkdir();    }      mUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory()      + "/KengDieA/", "kengDiePic"      + String.valueOf(System.currentTimeMillis()) + ".jpg"));    cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mUri);      try {     cameraIntent.putExtra("return-data", true);     startActivityForResult(cameraIntent, CAMERA_WITH_DATA);    } catch (Exception e) {     e.printStackTrace();    }

ContentResolver cr = this.getContentResolver();     try {      if (bmp_selectedPhoto != null)// 如果不释放的话,不断取图片,将会内存不够       bmp_selectedPhoto.recycle();      bmp_selectedPhoto = BitmapFactory.decodeStream(cr        .openInputStream(mUri));     } catch (FileNotFoundException e) {      // TODO Auto-generated catch block      e.printStackTrace();     }     home_view.setBackground(new BitmapDrawable(getResources(),       bmp_selectedPhoto));