Warning: file_get_contents(/data/phpspider/zhask/data//catemap/3/android/224.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
为什么每次重复按键后都会调用android KeyboardView.OnKeyboardActionListener.onRelease()?_Android_Android Softkeyboard - Fatal编程技术网

为什么每次重复按键后都会调用android KeyboardView.OnKeyboardActionListener.onRelease()?

为什么每次重复按键后都会调用android KeyboardView.OnKeyboardActionListener.onRelease()?,android,android-softkeyboard,Android,Android Softkeyboard,根据KeyboardView.OnKeyboardActionListener.onRelease()SDK文档,“对于重复的键,只调用一次”。但是,如果我在Android软键盘示例中将“a”键的isRepeatable设置为true,并记录onPress()、onKey()和onRelease()方法调用,我会得到预期的重复,但我会观察以下日志中的单个按下/重复/释放序列: I/SoftKeyboard(31467): onPress: 97 I/SoftKeyboard(31467): on

根据
KeyboardView.OnKeyboardActionListener.onRelease()
SDK文档,“对于重复的键,只调用一次”。但是,如果我在Android软键盘示例中将“a”键的isRepeatable设置为true,并记录
onPress()
onKey()
onRelease()
方法调用,我会得到预期的重复,但我会观察以下日志中的单个按下/重复/释放序列:

I/SoftKeyboard(31467): onPress: 97
I/SoftKeyboard(31467): onKey: 97
I/SoftKeyboard(31467): onRelease: 97
I/SoftKeyboard(31467): onKey: 97
I/SoftKeyboard(31467): onRelease: 97
I/SoftKeyboard(31467): onKey: 97
I/SoftKeyboard(31467): onRelease: 97
I/SoftKeyboard(31467): onKey: 97
I/SoftKeyboard(31467): onRelease: 97
I/SoftKeyboard(31467): onKey: 97
I/SoftKeyboard(31467): onRelease: 97
如何准确确定触摸设备何时释放?谢谢,D

编辑(Paul Boddington 2015年7月30日编辑)

虽然我不是OP,但我想包括一个完整的例子来说明这个问题

MyActivity

public class MyActivity extends Activity {

    private static final String TAG = "MyActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);
        KeyboardView keyboardView = (KeyboardView) findViewById(R.id.keyboard_view);
        keyboardView.setKeyboard(new Keyboard(this, R.xml.keyboard));
        keyboardView.setOnKeyboardActionListener(new KeyboardView.OnKeyboardActionListener() {

            @Override
            public void onPress(int i) {
                Log.i(TAG, "onPress: " + i);
            }

            @Override
            public void onKey(int i, int[] ints) {
                Log.i(TAG, "onKey: " + i);
            }

            @Override
            public void onRelease(int i) {
                Log.i(TAG, "onRelease: " + i);
            }

            @Override public void onText(CharSequence charSequence) {}
            @Override public void swipeLeft() {}
            @Override public void swipeRight() {}
            @Override public void swipeDown() {}
            @Override public void swipeUp() {}
        });
    }
}
keyboard.xml

<?xml version="1.0" encoding="utf-8"?>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android">
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    >
    <Row
        android:keyWidth="25%p"
        android:keyHeight="60dp">
        <Key android:codes="0" android:keyLabel="0" android:isRepeatable="true"/>
        <Key android:codes="1" android:keyLabel="1" />
        <Key android:codes="2" android:keyLabel="2" />
        <Key android:codes="3" android:keyLabel="3" />
    </Row>
</Keyboard>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <android.inputmethodservice.KeyboardView
        android:id="@+id/keyboard_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:focusable="true"
        android:focusableInTouchMode="true"
        />
</LinearLayout>

我不知道如何修复
KeyboardView
以正确发出可重复按键的
onRelease()
。因此,我提出了一个解决方案,通过查看
MotionEvent.ACTION\u up
来识别发布。仅对可重复的键执行此操作,并忽略这些键的
onRelease()
事件

private List<Integer> mRepeatableKeys = new ArrayList<Integer>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final KeyboardView keyboardView = (KeyboardView) findViewById(R.id.keyboard_view);
    keyboardView.post(new Runnable() {
        @Override
        public void run() {
            for( Keyboard.Key key : keyboardView.getKeyboard().getKeys() )
            {
                if(key.repeatable) mRepeatableKeys.add(key.codes[0]);
            }
        }
    });
    keyboardView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_UP) {
                if(mTrackingRepeatableKey != -1)
                {
                    Log.i(TAG, "Repeatable key released: " + mTrackingRepeatableKey);
                    mTrackingRepeatableKey = -1;
                }
            }
            return false;
        }
    });

    keyboardView.setKeyboard(new Keyboard(this, R.xml.keyboard));
    keyboardView.setOnKeyboardActionListener(mKeyboardActionListener);
}

private int mTrackingRepeatableKey = -1;
KeyboardView.OnKeyboardActionListener mKeyboardActionListener = new KeyboardView.OnKeyboardActionListener() {

    @Override
    public void onPress(int i) {
        Log.i(TAG, "onPress: " + i);
        if( mRepeatableKeys.contains(i))
        {
            mTrackingRepeatableKey = i;
        }
    }

    @Override
    public void onKey(int i, int[] ints) {
        if( mRepeatableKeys.contains(i))
        {
            Log.i(TAG, "onKey Repeat: " + i);
            return;
        }
        Log.i(TAG, "onKey: " + i);
    }

    @Override
    public void onRelease(int i) {
        // Ignore release for repeatable keys
        if( mRepeatableKeys.contains(i)) return;
        Log.i(TAG, "onRelease: " + i);
    }

    @Override
    public void onText(CharSequence text) {
    }

    @Override
    public void swipeLeft() {
    }

    @Override
    public void swipeRight() {
    }

    @Override
    public void swipeDown() {
    }

    @Override
    public void swipeUp() {
    }
};

如果你愿意,你可以扩展KeyboardView,并在其中包含所有这些丑陋的逻辑。

我没有做很多Android编程,但是使用onLongPress方法检查onRelease方法中的按键是否仍然被按下不是很简单吗

@Override
public void onRelease(int i) {
    if(keyboardView.onLongPress(i){ 
        //do nothing
    }
    else{
        Log.i(TAG, "onRelease: " + i);
    }
}

除非我弄错了,否则如果您的手指仍在按键上,该方法应返回true,而当您停止时,该方法应返回false

我猜你的钥匙不是一把重复的钥匙……是的,是的。我澄清了原始帖子。你使用的是stock Android键盘吗?你能发布一段设置键可重复的代码吗?@Taha我更新了问题,加入了一个完整的例子。onLongPress()是一个受保护的回调方法,你不需要显式调用它。啊,是的,在我匆忙寻找解决方案的过程中,我似乎浏览了一下。回答得很好。我因一个体面的工作环境而获得赏金。非常感谢。我做了一个错误报告
@Override
public void onRelease(int i) {
    if(keyboardView.onLongPress(i){ 
        //do nothing
    }
    else{
        Log.i(TAG, "onRelease: " + i);
    }
}