Android Camera 从Camera中获取图片的两种方法

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

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");
 
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));