Android 拍照获取源图像

来源：互联网发布：java开发项目实例编辑：程序博客网时间：2024/06/07 12:47

调用系统自带的拍照功能，拍摄照片，取得未经压缩的照片。

之前用PA4的 demo，取得的照片一直是压缩后的，下面的程序取得未压缩到的照片。

方法是：拍照后保存在硬盘上，之后读取文件。

P.S 需添加文件读写权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

public class MainActivity extends Activity {private static final int TAKE_PICTURE = 0;private ImageView image; private Bitmap bmp;  private Uri outputFileUri;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);image = (ImageView)findViewById(R.id.ImageView);//set the path for imageFile file = new File(Environment.getExternalStorageDirectory(),"shot.jpg");outputFileUri = Uri.fromFile(file);//start cameraIntent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);startActivityForResult(intent,TAKE_PICTURE);}protected void onActivityResult(int requestCode, int resultCode, Intent data){ if (requestCode == TAKE_PICTURE) { try{ Log.i("TAG","Uri path: "+outputFileUri.getPath()); bmp = BitmapFactory.decodeFile(outputFileUri.getPath(),null); image.setImageBitmap(bmp); Log.i("TAG","bmp is loaded!"); }catch(Exception e){ Log.i("Tag","exception"); Log.i("Tag","Uri path: "+outputFileUri.getPath()); } }}}

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