Handler詳解系列(七)——Activity.runOnUiThread()方法詳解，runonuithread

Handler詳解系列(七)——Activity.runOnUiThread()方法詳解，runonuithread
MainActivity如下:

package cc.testui3;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.app.Activity;/** * Demo描述: * 在子線程中更改UI的方式三 *  * 調用Activity.runOnUiThread(Runnable runnable)方法. *  *該方法的源碼如下: * * Runs the specified action on the UI thread. If the current thread is the UI * thread, then the action is executed immediately. If the current thread is * not the UI thread, the action is posted to the event queue of the UI thread. * * @param action the action to run on the UI thread * public final void runOnUiThread(Runnable action) { *    if (Thread.currentThread() != mUiThread) { *        mHandler.post(action); *    } else { *        action.run(); *      } * } *  *  * 源碼中的這段注釋太詳細和貼心了,贊一個! * 在UI線程中執行該Runnable. * 如果當前線程是UI線程,那麼該Runnable會立即執行. * 如果當前的線程不是UI線程則調用UI線程handler的post()方法將其放入UI線程的訊息佇列中. * 注意:勿在runOnUiThread(Runnable runnable)中做耗時操作 *  * 參考資料: * http://blog.csdn.net/guolin_blog/article/details/9991569 * Thank you very much */public class MainActivity extends Activity { private TextView mTextView; private Activity mActivity; private Button mButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();}    private void init(){    mActivity=this;    mTextView=(TextView) findViewById(R.id.textView);    mButton=(Button) findViewById(R.id.button);    mButton.setOnClickListener(new OnClickListenerImpl());    }private class OnClickListenerImpl implements OnClickListener {@Overridepublic void onClick(View v) {new Thread(){public void run() {mActivity.runOnUiThread(new Runnable() {@Overridepublic void run() {mTextView.setText("My name is zxc , number is 007");}});};}.start();}}}

main.xml如下:

<RelativeLayout 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"   >     <TextView        android:id="@+id/textView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="test"        android:layout_centerHorizontal="true"        android:layout_marginTop="50dip"        />          <Button        android:id="@+id/button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Button"        android:layout_centerHorizontal="true"        android:layout_marginTop="120dip"        />        <TextView        android:id="@+id/tipTextView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="測試在子線程中更新UI"         android:layout_centerInParent="true"        /></RelativeLayout>

八字命宮詳解——本人姓謝 男 生於1989年9月初五晚上七點半(農曆），

從小克父，最好離祖地發展。有興趣hi聊。