CalledFromWrongThreadException：只有创建了一个视图层次可以触摸的意见原来的线程 [英] CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch views

问题描述

我有一个问题，在Android的出现以下错误：

  

CalledFromWrongThreadException ;:只   创建一个原来的线程   视图层次可以触摸自己的看法

看来，当我试图在我的活动更新一个TextView的情况发生，则调用来更新TextView的是从我的活动范围内，但我仍然得到上述错误。

我有这样的：

的onCreate（） - 设置了按钮和文本视图。

onStateChange（） - 一个监听器有关状态更改的通知，在此得到通知，如果改变的TextView说一些不同的文本

当我得到一个新的文本通知我试图改变TextView的像这样：

 （（TextView中）findViewById（R.id.title））的setText（一些文本）。
 

但我得到上述错误。

从Google上搜寻它，看来我应该使用一个处理程序来改变TextView的或者使用的AsyncTask？

谁能解释一下哪一个会更好用，为什么？

编辑：添加code片段：

---

 公共无效的onCreate（包savedInstanceState）{
            super.onCreate（savedInstanceState）;

            requestWindowFeature（Window.FEATURE_CUSTOM_TITLE）;

            的setContentView（R.layout.my）;

            。getWindow（）setFeatureInt（Window.FEATURE_CUSTOM_TITLE，R.layout.my_title）;

            （（TextView中）findViewById（R.id.time））的setText（你好文字）;


            findViewById（R.id.keyboardimage）.setOnClickListener（新OnClickListener（）{
                公共无效的onClick（视图v）{

                    意图dialIntent =新的意图（Intent.ACTION_DIAL，Uri.parse（电话：））;
                    startActivity（dialIntent）;

                        dispatchKeyEvent（新的KeyEvent（KeyEvent.ACTION_DOWN，KeyEvent.FLAG_SOFT_KEYBOARD））;
                        dispatchKeyEvent（新的KeyEvent（KeyEvent.ACTION_UP，KeyEvent.KEY code_BACK））;
                }
        }）;

     }
 

---

  //回调运行服务

私人最终ICallDialogActivity.Stub iCallDialogActivity =新ICallDialogActivity.Stub（）{

@覆盖
公共无效onStateChanged（INT callState）
                将抛出RemoteException {
            开关（callState）{
            案例GlobalData.CALL_STATUS_IDLE：

                打破;

            案例GlobalData.CALL_STATUS_DISCONNECTING：
                byeSetup（）;
                打破;
    }

};
 

---

 公共无效byeSetup（）{

            （（TextView中）findViewById（R.id.time））的setText（再见文本​​）。

            findViewById（R.id.keyboardimage）.setOnClickListener（新OnClickListener（）{
                公共无效的onClick（视图v）{
                    //无效按钮
                }}）;
}
 

解决方案

看起来像你是错误的线程。尝试使用一个处理程序来更新正确的线程上的GUI。请参见处理昂贵的操作从android.com UI线程的例子。基本上你会换 byeSetup 在的Runnable 并用处理程序实例。

 处理程序刷新=新的处理程序（Looper.getMainLooper（））;
refresh.post（新的Runnable（）{
    公共无效的run（）
    {
        byeSetup（）;
    }
}）;
 

I have an issue with the following error in Android:

CalledFromWrongThreadException;: Only the original thread that created a view hierarchy can touch its views

It appears to happen when I try to update a Textview in my Activity, the call to update the TextView is from within my Activity but I still get the above error.

I have it like this:

onCreate() -sets up the buttons and the text view.

onStateChange() - a listener for notifications about state changes, when this gets notification if changes the TextView to say some different text.

When I get notification of a new text I try to change the TextView as so:

((TextView)findViewById(R.id.title)).setText("Some Text");

But I get the above Error.

From googling it, it appears I should use a handler to change the TextView or maybe use AsyncTask?

Could anyone explain which one would be better to use and why?

EDIT: ADDED CODE SNIPPETS:

---

     public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);  

            setContentView(R.layout.my);

            getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.my_title);  

            ((TextView)findViewById(R.id.time)).setText("Hello Text");


            findViewById(R.id.keyboardimage).setOnClickListener(new OnClickListener() {
                public void onClick(View v) {

                    Intent dialIntent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:"));
                    startActivity(dialIntent);

                        dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN,KeyEvent.FLAG_SOFT_KEYBOARD));
                        dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK));       
                }
        });

     }

---

//CallBacks from running Service

private final ICallDialogActivity.Stub iCallDialogActivity = new ICallDialogActivity.Stub(){

@Override
public void onStateChanged(int callState)
                throws RemoteException {    
            switch(callState){
            case GlobalData.CALL_STATUS_IDLE:

                break;

            case GlobalData.CALL_STATUS_DISCONNECTING:
                byeSetup();
                break;
    } 

};

---

public void byeSetup(){

            ((TextView)findViewById(R.id.time)).setText("Bye Text");

            findViewById(R.id.keyboardimage).setOnClickListener(new OnClickListener() {
                public void onClick(View v) {
                    //Void the Button
                }});
}

解决方案

Look like you are on the wrong thread. Try using a Handler to update the GUI on the right thread. See Handling Expensive Operations in the UI Thread example from android.com. Basically you would wrap byeSetup in a Runnable and invoke it with a Handler instance.

Handler refresh = new Handler(Looper.getMainLooper());
refresh.post(new Runnable() {
    public void run()
    {
        byeSetup();
    }
});

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