Làm thế nào để lưu hình ảnh cùng với chế độ xem bề mặt trong Android?

Question

Surface cùng với hình ảnh khi tôi bấm vào nút đó là tiết kiệm chỉ là bề mặt cho điều này tôi đã cố gắng mã sau

camera.takePicture(shutterCallback, rawCallback, jpegCallback); 
ShutterCallback shutterCallback = new ShutterCallback() 
{ 
    public void onShutter() 
    { 
     Log.d(TAG, "onShutter'd"); 
    } 
}; 

PictureCallback rawCallback = new PictureCallback() 
{ 
    public void onPictureTaken(byte[] data, Camera camera) 
    { 
     Log.d(TAG, "onPictureTaken - raw"); 
    } 
}; 

PictureCallback jpegCallback = new PictureCallback() 
{ 
    public void onPictureTaken(byte[] data, Camera camera) 
    { 
     try 
     { 
      File root = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM),"Camera"); 
      if (!root.exists()) 
      { 
       root.mkdirs(); 
      } 

      FileOutputStream f = new FileOutputStream(new File(root,System.currentTimeMillis()+".jpg")); 
      int len1 = data.length; 
      f.write(data,0, len1); 
      f.close(); 
     } 
     catch (Exception e) 
     { 
      e.printStackTrace(); 
     } 
     finally 
     { 
     } 
    } 
}; 

bởi mã này nhận được chỉ mặt, là có bất kỳ khả năng tiết kiệm bề mặt cùng với hình ảnh? nếu có ai biết hãy giúp tôi

Answer 1

Bạn thử sử dụng ví dụ này. Chẳng hạn như

import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.OutputStream; 

import android.content.Context; 
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.os.Environment; 
import android.util.AttributeSet; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.MotionEvent; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 
import android.widget.Toast; 

public class FingerpaintView extends SurfaceView implements SurfaceHolder.Callback { 
    private static final String TAG = "FingerpaintView"; 

    private Paint foregroundPaint; 
    private Paint backgroundPaint; 
    private int width, height; 
    private int lastTouchX, lastTouchY; 
    private Bitmap pictureBitmap; 
    private Canvas pictureCanvas; 
    private final Context context; 

    public FingerpaintView(Context context) { 
     super(context); 
     this.context=context; 
     init(); 
    } 

    public FingerpaintView(Context context, AttributeSet attrs) { 
     super(context, attrs); 
     this.context=context; 
     init(); 
    } 

    private void init() { 
     setFocusableInTouchMode(true); 
     getHolder().addCallback(this); 
     foregroundPaint = new Paint(); 
     foregroundPaint.setColor(Color.WHITE); 
     foregroundPaint.setStrokeWidth(4); 
     backgroundPaint = new Paint(); 
     backgroundPaint.setColor(Color.BLACK); 
     lastTouchX = -1; 
     lastTouchY = -1; 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     final int x = (int) event.getX(); 
     final int y = (int) event.getY(); 
     if ((event.getAction() == MotionEvent.ACTION_DOWN) || (event.getAction() == MotionEvent.ACTION_MOVE)) { 
      Log.d(TAG, "Touched " + x + "," + y); 
      if ((lastTouchX != -1) && (lastTouchY != -1)) { 
       pictureCanvas.drawLine(lastTouchX, lastTouchY, x, y, foregroundPaint); 
       draw(); 
      } 
      lastTouchX = x; 
      lastTouchY = y; 
     } else { 
      lastTouchX = -1; 
      lastTouchY = -1; 
     } 
     return true; 
    } 

    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
     if (keyCode == KeyEvent.KEYCODE_MENU){ 
      clear(); 
      return true; 
     } 
     return super.onKeyDown(keyCode, event); 
    } 

    @Override 
    public void surfaceChanged(SurfaceHolder holder, int format, int width, 
      int height) { 
     this.width = width; 
     this.height = height; 
     if (pictureBitmap != null) { 
      pictureBitmap.recycle(); 
     } 
     pictureBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565); 
     pictureCanvas = new Canvas(pictureBitmap); 
     clear(); 
     draw(); 
    } 

    public void draw() { 
     final Canvas c = getHolder().lockCanvas(); 
     if (c != null) { 
      c.drawBitmap(pictureBitmap, 0, 0, null); 
      getHolder().unlockCanvasAndPost(c); 
     } 
    } 

    public void clear() { 
     pictureCanvas.drawRect(0, 0, width, height, backgroundPaint); 
     draw(); 
    } 

    @Override 
    public void surfaceCreated(SurfaceHolder holder) { 
    } 

    @Override 
    public void surfaceDestroyed(SurfaceHolder holder) { 
     if (pictureBitmap != null) { 

      saveFile(pictureBitmap,"MyImage"); 


      pictureBitmap.recycle(); 
     } 
     pictureBitmap = null; 
    } 

    private void saveFile(Bitmap bitmap, String name) { 
     // String filename = String.valueOf(System.currentTimeMillis()) ; 
     String extStorageDirectory; 
     extStorageDirectory = Environment.getExternalStorageDirectory().toString(); 
     OutputStream outStream = null; 
      final File file = new File(extStorageDirectory, name); 
      try { 
      outStream = new FileOutputStream(file); 
      bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream); 
      outStream.flush(); 
      outStream.close(); 

      Toast.makeText(context, "Saved", Toast.LENGTH_LONG).show(); 

      } catch (final FileNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Toast.makeText(context, e.toString(), Toast.LENGTH_LONG).show(); 
      } catch (final IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Toast.makeText(context, e.toString(), Toast.LENGTH_LONG).show(); 
      } 

      } 

    } 

Tôi mong bạn sẽ hữu ích.