android中如何实现动态插入控件

直接给你上代码吧,写了我半个小时,经过了我的测试了的~
运行下就能看到结果了~关键的remove的时候有给你写注释~
布局的layout文件内容：
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对应Activity的内容：
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package com.foxconn.dialog;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
public class DialogTest extends Activity implements OnClickListener {
private Button add_btn,remove_btn;
private LinearLayout linearLayout;
private int index = 0;
/** Called when the activity is first created.*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViews();
register();
}
private void register() {
add_btn.setOnClickListener(this);
remove_btn.setOnClickListener(this);
}
private void findViews() {
add_btn = (Button) findViewById(R.id.add);
remove_btn = (Button) findViewById(R.id.remove);
linearLayout = (LinearLayout) findViewById(R.id.linearlayout);
}
protected View createView() {
Button btn = new Button(this);
btn.setId(index++);
btn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
btn.setText("aaaaaa" + index);
return btn;
}
private void removeView() {
//获取linearlayout子view的个数
int count = linearLayout.getChildCount();
//研究整个LAYOUT布局,第0位的是含add和remove两个button的layout
//第count-1个是那个文字被置中的textview
//因此,在remove的时候,只能操作的是00用来判断当前linearlayout子view数多于2个,即还有我们点add增加的button
linearLayout.removeViewAt(count - 2);
}
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.add:
linearLayout.addView(createView(),1);
break;
case R.id.remove:
removeView();
break;
default:
break;
}
}
}
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