自定义控件的步骤:

1 View的工作原理
2 编写View类
3 为View类增加属性
4 绘制屏幕
5 响应用户消息
6 自定义回调函数

java代码

复制代码 代码如下:
private class MyText extends LinearLayout {
private TextView text1;

/*
* private String text;
*
* public String getText() { return text; }
*
* public void setText(String text) { this.text = text; }
*/
public MyText(Context context) {
super(context);
// TODO Auto-generated constructor stub
LayoutInflater inflate = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
View view = inflate.inflate(R.layout.tabhost_item, this, true);
text1 = (TextView) view.findViewById(R.id.tabhost_tv);
}

public void setTextViewText(String tabhost_name) {
text1.setText(tabhost_name);
}
/*
* @Override protected void onDraw(Canvas canvas) { // TODO
* Auto-generated method stub super.onDraw(canvas); Paint p = new
* Paint(); p.setColor(Color.WHITE); p.setTextSize(10);
* canvas.drawText(text, 25, 25, p); }
*/

}

xml代码
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<!-- GMapTabActivity中自定义控件MyText的自布局 -->

<TextView
android:id="@+id/tabhost_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>