Android開發教程：動態添加控件

Android開發教程：動態添加控件

package com.mrzhu.edittest;

import android.app.Activity;
import android.os.Bundle;
import android.view.ViewGroup;
import android.widget.RelativeLayout;

public class EditTestActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//自定義的帶提示文本的EditText組件
EditTextTest ed = new EditTextTest(this);
//設置從左邊140px處開始輸入文本
ed.setPadding(140, 0, 0, 0);
//裝載一個布局文件，向這個布局中動態添加一個EditText
RelativeLayout relativeLayout = (RelativeLayout) getLayoutInflater().inflate(R.layout.main, null);
//創建一個LayoutParams對象
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
//設置android:layout_below屬性的值
layoutParams.addRule(RelativeLayout.BELOW, R.id.button2);
//動態添加EditText
relativeLayout.addView(ed, layoutParams);
//設置布局
setContentView(relativeLayout);
}
}