Question

我在programatically中为我的活动创建了截图。工作完美。我在拍摄我的活动中显示的图像后出现问题。如何隐藏它？

我的代码：

public class MainActivity extends AppCompatActivity {

    File cacheDir;
    final Context context = this;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button print = (Button) findViewById(R.id.btn_print);

        print.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                takeScreenShot();
            }
        });



    }

       private void takeScreenShot() {

        View u =  findViewById(R.id.activity_main);

        int spec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
        u.measure(spec, spec);
        u.layout(0, 0, u.getMeasuredWidth(), u.getMeasuredHeight());

        Bitmap b = getBitmapFromView(u,u.getMeasuredHeight(),u.getMeasuredWidth());

        final String root = Environment.getExternalStorageDirectory().toString();

        File myPath = new File(root + "/saved_img");
        myPath.mkdirs();
        Random generator = new Random();
        int n = 10000;
        n = generator.nextInt(n);
        String fname = "Image-"+n+".jpg";
        File file = new File(myPath, fname);
        FileOutputStream fos = null;
        if(file.exists()) file.delete();
        try{
            fos = new FileOutputStream(file);
            b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
            fos.close();


        } catch(FileNotFoundException e){
            e.printStackTrace();
        } catch (Exception e){
            e.printStackTrace();
        }

        Toast.makeText(this,"screen captured",Toast.LENGTH_SHORT).show();
    }



    public Bitmap getBitmapFromView(View u, int totalHeight, int totalWidth){
        Bitmap returnedBitmap = Bitmap.createBitmap(totalWidth,totalHeight , Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(returnedBitmap);

        Drawable bgDrawable = u.getBackground();
        if (bgDrawable != null)
            bgDrawable.draw(canvas);
        else
            canvas.drawColor(Color.WHITE);
        u.draw(canvas);
        return returnedBitmap;
    }
}

如何解决这个问题？我点击按钮之前的输出图像，

enter image description here

这是我输出2后点击按钮， enter image description here

Answer 1

这是我的错误。在获取屏幕截图后，我在捕获图像大小时设置了布局大小（基于获取测量宽度和高度）我删除了程序中的下面一行，它完美地工作。

u.layout（0,0，u.getMeasuredWidth（），u.getMeasuredHeight（））;

因为该行设置保存图像精确高度＆amp;宽度进入当前布局。那个错误。我解决了它。感谢所有人的帮助。再次感谢...

如果我拍摄截图，我的活动中的屏幕截图显示如何隐藏它？

1 个答案: