我怎么可以从我的customview宽度和高度尺寸? [英] how i can get width and height dimension from my customview?
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问题描述
我有一个自定义视图...
i have a Custom view ...
package nan.salsa.goal.customview;
import android.R;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
public class DayView extends View {
private static String TAG="DayView";
private ShapeDrawable mDrawable;
public DayView(Context context) {
super(context);
}
public DayView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public DayView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public void init() {
int x = 10;
int y = 10;
int width = 300;
int height = 300;
mDrawable = new ShapeDrawable(new RectShape());
mDrawable.getPaint().setColor(0xff74AC23);
mDrawable.setBounds(x, y, x + width, y + height);
}
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
setBackgroundColor(R.color.black);
mDrawable.draw(canvas);
}
}
这个简单的配置文件:
with this simple configuration file :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#E06F00">
<nan.salsa.goal.customview.DayView android:id="@+id/dayView"
android:layout_height="match_parent"
android:layout_width="fill_parent" />
</LinearLayout>
在我看来,我想我的dinamically矩形的设置宽度...
In my view i want to dinamically set width of my rectangle ...
我曾尝试:
View parent = getParent();
int width = parent.getWidth();
//抛出NullPointerException,因为父母是空...
// throw nullPointerException because parent is null ...
和也:
getRootView().getWidth();
//在这种情况下,没有空pointerException但方法返回0:
// in this case no null pointerException but method return 0:
我该怎么办?
关于
安东尼奥地涌
推荐答案
通过添加此方法您的自定义视图类:
By adding this method to your custom view class:
@Override
public void onSizeChanged (int w, int h, int oldw, int oldh){
super.onSizeChanged(w, h, oldw, oldh);
screenW = w;
screenH = h;
}
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