Android从Camera中获取图片的两种方法

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

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

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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

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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();         }

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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));