android 退出函数 android – 关闭应用程序与退出按钮

下面使用main.xml文件

android:orientation="vertical" android:layout_width="fill_parent"

android:layout_height="fill_parent">

android:layout_height="wrap_content" android:id="@+id/txt1" android:text="txt1" />

android:layout_height="wrap_content" android:id="@+id/txt2" android:text="txt2"/>

android:layout_height="wrap_content" android:id="@+id/btn1"

android:text="Close App" />

和text.java文件在下面

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class testprj extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button btn1 = (Button) findViewById(R.id.btn1);

btn1.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

finish();

System.exit(0);

}

});

}

}