我正在尝试创建一个在gridview的每个单元格上显示时钟的应用程序。它可以工作3或4个时钟，但在我上下滚动后，所有时钟都开始改变位置。当我调试时，我意识到onGraw目前没有调用gridView调用，但它稍后会被调用，可能是随机调用的。
如何跟踪onDraw并将正确的时钟放在正确的网格上？请帮我解决一下。我已经尝试了两天。
这是gridview代码：
@Override
public View getView(final int position, View view, final ViewGroup viewGroup) {
if (view == null) {
holder = new ViewHolder();
view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.grid_item, viewGroup, false);
holder.wholeGrid = (LinearLayout) view.findViewById(R.id.whole_grid);
holder.imageGrid = (FrameLayout) view.findViewById(R.id.myFrame);
holder.headerText = (TextView) view.findViewById(R.id.header);
holder.text = (TextView) view.findViewById(R.id.detailText);
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
................................
Date denemeSaat = new Date();
denemeSaat.setTime(milis);
int x = holder.imageGrid.getWidth();
int y = holder.imageGrid.getHeight();
View clockView = new CustomClock(getApplicationContext(), x,y, denemeSaat, position);
holder.imageGrid.addView(clockView,1);
Log.i("draw clock", "addView position" + position);
...............
return view;
}
}
以下是自定义视图：
public class CustomClock extends View {
private final float x;
private final float y;
private final int r=150;
private final int position;
private final Date date;
Drawable d = getResources().getDrawable(R.drawable.yelkovan);
Drawable saat = getResources().getDrawable(R.drawable.white_clock);
Drawable akrep = getResources().getDrawable(R.drawable.akrep);
private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
public CustomClock(Context context, float x, float y, Date date, int position) {
super(context);
this.x = x;
this.y = y;
this.date=date;
this.position=position;
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
float sec=(float)date.getSeconds();
float min=(float)date.getMinutes();
float hour=(float)date.getHours()+min/60.0f;
int x = canvas.getWidth();
saat.setBounds(0, 0, x, x);
saat.draw(canvas);
canvas.save();
//canvas.drawLine(x, y, (float)(x+(r-15)*Math.cos(Math.toRadians((hour / 12.0f * 360.0f)-90f))), (float)(y+(r-10)*Math.sin(Math.toRadians((hour / 12.0f * 360.0f)-90f))), mPaint);
d.setBounds(0, 0, x, x);
canvas.rotate(min * 6, x / 2, x / 2);
d.draw(canvas);
canvas.save();
float degrees = hour*30 - min*6;
akrep.setBounds(0, 0, x, x);
canvas.rotate(degrees, x / 2, x / 2);
akrep.draw(canvas);
canvas.save();
Log.i("draw clock", "Draw canvas position" + position);
}
我在日志之下：
08-31 20:20:41.444 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position0
08-31 20:20:41.444 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position0
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position1
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position2
08-31 20:20:41.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position3
08-31 20:21:24.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position4
08-31 20:21:24.455 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position5
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position4
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:24.465 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position5
08-31 20:21:45.936 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position6
08-31 20:21:45.946 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position7
08-31 20:21:45.955 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position6
08-31 20:21:45.955 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position1
08-31 20:21:45.965 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position7
08-31 20:21:45.965 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:45.965 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:45.965 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position0
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position8
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position9
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position8
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position3
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position9
08-31 20:21:48.125 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position2
08-31 20:21:49.285 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position4
08-31 20:21:49.285 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position5
08-31 20:21:49.285 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position2
08-31 20:21:49.295 13100-13100/org.xxxx.xxxx I/draw clock﹕ addView position3
08-31 20:21:49.295 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position2
08-31 20:21:49.295 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position8
08-31 20:21:49.305 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position3
08-31 20:21:49.305 13100-13100/org.xxxx.xxxx I/draw clock﹕ Draw canvas position3