从GestureOverlayView android系统中清除手势

问题描述

我使用GestureOverlayView画我已经成功地实现了它的任何图片，但是当我要画另一张照片，我需要从GestureOverlayView在我activity.How我能做到这一点清除previous？

请看看我的code：

 公共类MainActivity延伸活动{    私人按钮button_save;
    私人按钮button_clear;
    私人GestureOverlayView姿势;    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;        的setContentView（R.layout.activity_main）;        手势=（GestureOverlayView）findViewById（R.id.gestures）;
        button_save =（按钮）findViewById（R.id.save_button）;
        button_clear =（按钮）findViewById（R.id.clearbtn）;
        button_save.setOnClickListener（新OnClickListener（）{            @覆盖
            公共无效的onClick（查看为arg0）{
                尝试{
                    位图gestureImg = gesture.getGesture（）。toBitmap（100，100，
                            8，Color.BLACK）;                    ByteArrayOutputStream BOS =新ByteArrayOutputStream（）;
                    gestureImg.com preSS（Bitmap.Com pressFormat.PNG，100，BOS）;
                    字节[] = bArray bos.toByteArray（）;                    意向意图=新意图（MainActivity.this，
                            Activity2.class）;                    intent.putExtra（画，bArray）;
                    startActivity（意向）;                }赶上（例外五）{
                    e.printStackTrace（）;
                    Toast.makeText（MainActivity.this，关于字符串，不画
                            3000）.show（）;
                }
            }
        }）;        button_clear.setOnClickListener（新OnClickListener（）{            @覆盖
            公共无效的onClick（视图v）{                ** //这里做什么来清除我的手绘动画**            }
        }）;
    }
 

解决方案

这两行将从您的活动清除创建手势

  gesture.cancelClearAnimation（）;
gesture.clear（真）;
 

I am using GestureOverlayView to draw any picture I have implemented it successfully,but when i want to draw another picture, I need to clear the previous from the GestureOverlayView in my activity.How can I do it ?

Please look into my code :

public class MainActivity extends Activity {

    private Button button_save;
    private Button button_clear;
    private GestureOverlayView gesture;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        gesture = (GestureOverlayView) findViewById(R.id.gestures);
        button_save = (Button) findViewById(R.id.save_button);
        button_clear = (Button) findViewById(R.id.clearbtn);
        button_save.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                try {
                    Bitmap gestureImg = gesture.getGesture().toBitmap(100, 100,
                            8, Color.BLACK);

                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    gestureImg.compress(Bitmap.CompressFormat.PNG, 100, bos);
                    byte[] bArray = bos.toByteArray();

                    Intent intent = new Intent(MainActivity.this,
                            Activity2.class);

                    intent.putExtra("draw", bArray);
                    startActivity(intent);

                } catch (Exception e) {
                    e.printStackTrace();
                    Toast.makeText(MainActivity.this, "No draw on the string",
                            3000).show();
                }
            }
        });

        button_clear.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                **//What to do here to clear my drawn animation**

            }
        });
    }

解决方案

These two lines will clear the created gesture from your activity

gesture.cancelClearAnimation();
gesture.clear(true);

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