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POReloading of Custom View on clicking a Button
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copied!<p>I m trying to refresh the screen on clicking a button so i want to know What should I write in OnClick() method so that the custom view ie TouchEventView will reload or refresh here is my code of TouchEventView.java </p> <pre><code>public class TouchEventView extends View { private Paint paint = new Paint(); private Path path = new Path(); public TouchEventView(Context context, AttributeSet attrs) { super(context, attrs); paint.setAntiAlias(true); paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.STROKE); paint.setStrokeJoin(Paint.Join.ROUND); paint.setStrokeWidth(5f); } @Override protected void onDraw(Canvas canvas) { canvas.drawPath(path, paint); } @Override public boolean onTouchEvent(MotionEvent event) { float eventX = event.getX(); float eventY = event.getY(); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: path.moveTo(eventX, eventY); return true; case MotionEvent.ACTION_MOVE: path.lineTo(eventX, eventY); break; case MotionEvent.ACTION_UP: // nothing to do break; default: return false; } // Schedules a repaint. invalidate(); return true; } } ` </code></pre> <p>here is main.xml file ``</p> <pre><code> <de.vogella.android.touch.TouchEventView android:id="@+id/mydrawview1" android:layout_width="wrap_content" android:layout_height="328dp" android:layout_weight="0.91" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/reset" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Reset" /> </LinearLayout> </LinearLayout>` </code></pre> <p>here is activity class`</p> <pre><code>/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button res = (Button) findViewById(R.id.reset); res.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub TouchEventView touchView = (TouchEventView) findViewById(R.id.mydrawview1); touchView.clear(); } }); } </code></pre> <p>}` </p>

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