Android 由于没有窗口焦点而取消事件：MotionEvent

故事是这样的：

我正试图在Android Studio中构建一个猜谜游戏。其中，用户必须猜测一个介于0和1000之间的数字。每次用户进行猜测时，计算机都会告诉您猜测值是小于实际值（冷）还是大于实际值（热）。我决定让用户在editTextView中输入他的猜测。我将一个

onFocus

事件监听器绑定到editTextView，这样当用户按下enter键或点击其他位置时，它会将猜测提交给计算机。我在emulator中运行了代码，从控制台收到一些消息，内容类似于以下内容：

W/ViewRootImpl:由于没有窗口焦点而取消事件：运动事件{action=action\u CANCEL，actionButton=0，id[0]=0，x[0]=605.52246，y[0]=969.4336，工具类型[0]=TOOL\u TYPE\u FINGER，按钮状态=0，标志=0x0，边标记=0x0，指针计数=1，历史大小=0，事件时间=238238，停机时间=235422，设备id=0，源代码=0x1002}

public class GameActivity extends AppCompatActivity implements View.OnFocusChangeListener {
    public final int MAXNUMBER = 1000;
    private int theAnswer; // stores the number the user has to guess
    public int guesses = 0;
    public EditText userGuess;
    public TextView hotOrCold;
    public String isHotOrCold(int userInput){
        return theAnswer < userInput?"Hot":"Cold"; // Utility to tell the user if his guess is greater than or less than the number.
    }
    public boolean isValidInput(int num){
        return num >= 0 && num <= MAXNUMBER;
    }
    public void resetGame(){
        guesses = 0;
        theAnswer = (int) (Math.random() * (MAXNUMBER + 1));
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game);

        userGuess = (EditText)findViewById(R.id.userGuess);
        hotOrCold = (TextView) findViewById(R.id.hotOrCold);
        resetGame();
        userGuess.setOnFocusChangeListener(this);
    }

    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        /* When focus is lost check that the text field
        * has valid values.
        */
        Log.i("","RAN!");
        if (!hasFocus) {
            guesses++;
            int userInput = Integer.valueOf(userGuess.getText().toString()); // get user input
            Log.i("userInput is: ",userInput+"");
            if (isValidInput(userInput)){
                if (theAnswer == userInput){
                    Toast.makeText(getApplicationContext(),"Congrats! The number was: "+userInput+". You got it in " + guesses + " guesses!",Toast.LENGTH_LONG); // Tell user he got it right
                    hotOrCold.setText("Hot Or Cold"); // set text to default
                    resetGame();
                } else {
                    hotOrCold.setText(isHotOrCold(userInput)); // Tells user if he is hot or cold.
                }
            } else {
                // do nothing
            }
        } else {
            Log.i("Did Run","");
        }
    }
}

它只在程序开始时发生一次

以下代码提供了代码链接到的活动

<?xml version="1.0" encoding="utf-8"?>
<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.alexander.guessinggame.GameActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="Hot or Cold"
        android:id="@+id/hotOrCold"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:textIsSelectable="false"
        android:textSize="50sp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceSmall"
        android:text="*Hot:too big, cold:too small"
        android:id="@+id/textView3"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:textIsSelectable="false"
        android:textSize="17sp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="number"
        android:ems="10"
        android:id="@+id/userGuess"
        android:layout_above="@+id/textView3"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="111dp"
        android:numeric="integer"
        android:selectAllOnFocus="true"
        android:editable="true"
        android:focusableInTouchMode="true"
        android:focusable="true"
        android:enabled="true"
        android:singleLine="true"
        android:clickable="true"
        android:maxLength="4" />

</RelativeLayout>

如果您有什么需要，请尽管问我

谁能告诉我下面的错误是什么意思？当我点击编辑文本框时，它们就会出来

W/EGL\u仿真：未实现eglSurfaceAttrib

W/OpenGLRenderer:未能在表面0xa9fc6300上设置EGL_交换行为，错误=EGL_成功

E/Surface:getSlotFromBufferLocked:未知缓冲区：0xae3f3fb0

您可以覆盖：

onKeyUp(int keyCode, KeyEvent event)

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请遵循以下步骤，并让我知道它是否有效

覆盖dispatchKeyEvent以检查是否按了Tab或Enter键

如果按Tab或Enter键且EditTextView具有焦点，请提交猜测

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如果您有任何疑问或需要代码片段，请告诉我。

您好，您有任何解决方案吗

onKeyUp(int keyCode, KeyEvent event)