private void loadYMAds() {
    // 实例化 LayoutParams（重要）
    FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams( FrameLayout.LayoutParams.FILL_PARENT, FrameLayout.LayoutParams.WRAP_CONTENT);

    // 设置广告条的悬浮位置
    layoutParams.gravity = Gravity.BOTTOM | Gravity.RIGHT; // 这里示例为右下角
    // 实例化广告条
    AdView adView = new AdView(this, AdSize.FIT_SCREEN);
    adView.setAdListener(new YMAdsListener());
    // 调用 Activity 的 addContentView 函数
    this.addContentView(adView, layoutParams);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	requestWindowFeature(Window.FEATURE_NO_TITLE);
	setContentView(R.layout.weather_layout);
	// 初始化各控件
	weatherInfoLayout = (LinearLayout) findViewById(R.id.weather_info_layout);
	cityNameText = (TextView) findViewById(R.id.city_name);
	publishText = (TextView) findViewById(R.id.publish_text);
	weatherDespText = (TextView) findViewById(R.id.weather_desp);
	temp1Text = (TextView) findViewById(R.id.temp1);
	temp2Text = (TextView) findViewById(R.id.temp2);
	currentDateText = (TextView) findViewById(R.id.current_date);
	switchCity = (Button) findViewById(R.id.switch_city);
	refreshWeather = (Button) findViewById(R.id.refresh_weather);
	String countyCode = getIntent().getStringExtra("county_code");
	if (!TextUtils.isEmpty(countyCode)) {
		// 有县级代号时就去查询天气
		publishText.setText("同步中...");
		weatherInfoLayout.setVisibility(View.INVISIBLE);
		cityNameText.setVisibility(View.INVISIBLE);
		queryWeatherCode(countyCode);
	} else {
		// 没有县级代号时就直接显示本地天气
		showWeather();
	}
	switchCity.setOnClickListener(this);
	refreshWeather.setOnClickListener(this);
	//实例化广告条
    AdView adView = new AdView(this, AdSize.FIT_SCREEN);
    //获取要嵌入广告条的布局
    LinearLayout adLayout=(LinearLayout)findViewById(R.id.adLayout);
    //将广告条加入到布局中
    adLayout.addView(adView);
}
 

@Override
public void onReceivedAd(AdView adView) {
    // 切换广告并展示
}
 

@Override
public void onSwitchedAd(AdView adView) {
    // 请求广告成功
}
 

@Override
public void onFailedToReceivedAd(AdView adView) {
    // 请求广告失败
}