我想在android 在listview中绘制自定义的形状，我在网上找了代码但是没有运行通过，我现在有一个可以绘制矩形的 DrawView.java类，我想在我的自定义listView中展示这个对象。
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DrawView.java
package
com.example.horizontalscrollview;
import
android.content.Context;
import
android.graphics.Canvas;
import
android.graphics.Color;
import
android.graphics.Paint;
import
android.view.View;
public
class
DrawView extends
View {
Paint
paint = new
Paint();
public
DrawView(Context context) {
super(context);
}
@Override
public
void
onDraw(Canvas canvas) {
paint.setColor(Color.BLACK);
paint.setStrokeWidth(3);
canvas.drawRect(30,
30,
180,
180,
paint);
}
}
}
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我的配置文件如下
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="60dp"
android:id="@+id/mainLayout"
>
<com.example.horizontalscrollview.DrawView
android:id="@+id/drawview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
</com.example.horizontalscrollview.DrawView>
<
</LinearLayout>
listview 适配器的 getView() 函数如下
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public
View getView(final
int
position, View convertView, final
ViewGroup parent) {
Toast.makeText(c,
"Clicked
on="+position,
1).show();
convertView
= mInflater.inflate(R.layout.news_list_item,null);
DrawView
rl = (DrawView)convertView.findViewById(R.id.drawview);
DrawView
draw = new
DrawView(c);
rl=draw;
return
convertView;
}
}
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处理方法
追加下面的xml内容
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
a
android:layout_width="wrap_content"
a
android:layout_height="wrap_content"
a
android:orientation="vertical"
android:layout_margin="60dp"
a
android:id="@+id/mainLayout"
>
<com.example.horizontalscrollview.DrawView
android:id="@+id/drawview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" >
</com.example.horizontalscrollview.DrawView>
<
</LinearLayout>
getView 方法如下：
public View getView(final int position, View convertView, final ViewGroup parent) {
Toast.makeText(c, "Clicked on="+position, 1).show();
convertView = mInflater.inflate(R.layout.news_list_item,null);
return convertView;
}
}
这个应该能够正常运行
原文地址：http://www.itmmd.com/201411/120.html
该文章由 萌萌的IT人 整理发布,转载须标明出处。