動态添加元件

Layout程式清單

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" 

    android:id="@+id/ll">

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" />

    <Button

        android:id="@+id/buttonExit"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/button" />

</LinearLayout>

value程式清單

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="app_name">Test</string>

    <string name="hello_world">Hello world!</string>

      <string name="button">退出</string>

</resources>

MainActivity程式清單

package com.demo.test;

import android.app.ActionBar.LayoutParams;

import android.app.Activity;

import android.os.Bundle;

import android.widget.Button;

import android.widget.LinearLayout;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// 綁定Button

Button _buttonExit = (Button) findViewById(R.id.buttonExit);

//動态更改button文本

_buttonExit.setText("text change");

//綁定容器控件 LinearLayout ll

LinearLayout llLayout=(LinearLayout)findViewById(R.id.ll);

//動态生成一個Button

Button _newButton=new Button(this);

_newButton.setText("new button");

//将元件綁定到父容器上

llLayout.addView(_newButton, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

}

}