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我有這個類進行佈局,而不是編程
MyTouchEventView.java
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
public class MyTouchEventView extends View {
private Paint paint = new Paint();
private Path path = new Path();
private Path circlePath = new Path();
public Button btnReset;
public LayoutParams params;
public MyTouchEventView(Context context) {
super(context);
paint.setAntiAlias(true);
paint.setColor(Color.GREEN);
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeJoin(Paint.Join.ROUND);
paint.setStrokeWidth(4f);
btnReset = new Button(context);
btnReset.setText("Clear Screen");
params = new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT);
btnReset.setLayoutParams(params);
btnReset.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
path.reset();
postInvalidate();
}
});
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawPath(path, paint);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float pointX = event.getX();
float pointY = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
path.moveTo(pointX, pointY);
return true;
case MotionEvent.ACTION_MOVE:
path.lineTo(pointX, pointY);
circlePath.reset();
circlePath.addCircle(pointX, pointY, 30, Path.Direction.CW);
break;
case MotionEvent.ACTION_UP:
circlePath.reset();
break;
default:
return false;
}
postInvalidate();
return true;
}
}
DrawingBrush.java
public class DrawingBrush extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MyTouchEventView tv = new MyTouchEventView(this);
setContentView(tv);
addContentView(tv.btnReset, tv.params);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
}
現在我想轉換此
MyTouchEventView tv = new MyTouchEventView(this);
setContentView(tv);
addContentView(tv.btnReset, tv.params);
爲setContentView(R.layout.main);
並將按鈕和其他組件在「main.xml」佈局中查看
我該怎麼做?希望任何人都有我的意思。
我想刪除MyTouchEventView類,並把什麼它的類DrawingBrush – Eman87
我不知道我明白你在說什麼。但是,如果您需要在DrawingBrush中使用MyTouchEventView,則可以通過添加一個構造函數來修改MyTouchEventView類,創建一個新的佈局XML文件,在該XML文件中聲明MyTouchEventView,然後使用該XML文件在'DrawingBrush'中。如果您對自定義視圖不熟悉,我強烈建議您暫停一下,然後先閱讀文檔。 –
感謝您的回答,這個例子http://mobile.tutsplus.com/tutorials/android/android-sdk-creating-custom-views-2/也幫助我 – Eman87