android自定义控件和自定义回调函数步骤示例
本文导语: 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 代码如下:private class MyText extends LinearLayout { private TextView text1; /* * private String text; * ...
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
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