小编use*_*890的帖子

我想在每5秒后重复调用一个方法,每当我想停止重复调用该方法时,我可能会停止或重新启动该方法的重复调用.

这是一些我想要实现的示例代码.请在这方面帮助我,我将非常感谢你.

private int m_interval = 5000; // 5 seconds by default, can be changed later
private Handler m_handler;

@Override
protected void onCreate(Bundle bundle)
{
  ...
  m_handler = new Handler();
}

Runnable m_statusChecker = new Runnable()
{
     @Override 
     public void run() {
          updateStatus(); //this function can change value of m_interval.
          m_handler.postDelayed(m_statusChecker, m_interval);
     }
};

public void startRepeatingTask()
{
    m_statusChecker.run(); 
}

public void stopRepeatingTask()
{
    m_handler.removeCallbacks(m_statusChecker);
}  

我想在我的应用中显示Google广告,但它会unexpected namespace prefix xmlns在此代码中显示错误xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads".如果我删除此行,则显示Error parsing XML:unbound prefix.请帮我确定哪里出了问题.这是我的代码.

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/background_port"
    tools:context=".MainActivity">

    <LinearLayout xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="wrap_content"
              android:gravity="center"
              >

    <com.google.ads.AdView android:id="@+id/adView"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         ads:adUnitId="a151b801b7c1d6b"
                         ads:adSize="BANNER"
                         ads:testDevices="TEST_EMULATOR, TEST_DEVICE_ID"
                         ads:loadAdOnCreate="true"/>
    </LinearLayout>

    --------------------
    ---- More views ----
    --------------------

 </LinearLayout>