自定义全键盘-[Android_YangKe]

尊重劳动者创作,转发请注明出处

首先看本文实现的效果。

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学而不思则罔,思而不学则殆。一眨眼五一小长假就结束了,完全没玩嗨呢,不能完全进入工作状态,小伙伴们扶我起来嗨。一年嗨两次,一次嗨半年。好了,言归正传,今天是一个自定义键盘。

首先了解 API

  • KeyboardView
  • Keyboard

KeyboardView

KeyboardView 一个用于呈现虚拟键盘的 view,同时处理着每一个键盘所对应的点击、触摸等事件。

常用属性:

XML attributes
android:keyBackground Image for the key.
android:keyPreviewLayout Layout resource for key press feedback.
android:keyPreviewOffset Vertical offset of the key press feedback from the key.
android:keyTextColor Color to use for the label in a key.
android:keyTextSize Size of the text for character keys.
android:labelTextSize Size of the text for custom keys with some text and no icon.
android:popupLayout Layout resource for popup keyboards.
android:verticalCorrection Amount to offset the touch Y coordinate by, for bias correction.

顾名思义这些 API 很简单,这里不做过多的解释。在使用时我们需要特别注意下 android:verticalCorrection 。由于 android 设备众多,键盘 y 轴触摸区域可能存在偏差,此 API 是用于矫正偏移的 Y 坐标。具体作用自己可以在 xml 手动更改进行感受。

Keyboard

Keyboard 的样式是以 XML 文件的形式存在的,由多个 Row 和 Key 组成,我们可以直接在 XML 定义键盘的行、键、以及键大小,下面看代码块。

 
 
     
     ...
 
 ...
 

其中 Keyboard 表示整个键盘, Row 表示其中一行,Key 表示某一个具体按键。也就是说键盘的大小,样式都可以在这个文件中进行定义,下面通过一个表格对 Keyboard 必要属性进行简单了解。

XML attributes
android:horizontalGap Default horizontal gap between keys.
android:keyHeight Default height of a key, in pixels or percentage of display width.
android:keyWidth Default width of a key, in pixels or percentage of display width.
android:verticalGap Default vertical gap between rows of keys.

OK,到这里自定义键盘所需要了解的知识已经足够了,下面进入编码模式。

public class KeyboardViewS implements OnKeyboardActionListener {

private static final int KEYBOARD_DURATION = 350;
private EditText mEditText;
private Keyboard mKeyboard;
/** 是否大写 */
private boolean isUperCase = false;
private android.inputmethodservice.KeyboardView keyboardView;

public KeyboardViewS(Activity act, EditText edit) {
    this.mEditText = edit;
    mKeyboard = new Keyboard(act, R.xml.qwerty);

    keyboardView = (android.inputmethodservice.KeyboardView) (act.findViewById(R.id.keyboard_view));
    keyboardView.setKeyboard(mKeyboard);
    /** 设置没有弹窗的提示 */
    keyboardView.setPreviewEnabled(false);
    keyboardView.setOnKeyboardActionListener(this);
    uperCase();
}

@Override
public void onKey(int primaryCode, int[] keyCodes) {
    Editable editable = mEditText.getText();
    int start = mEditText.getSelectionStart();
    if (primaryCode == Keyboard.KEYCODE_CANCEL) {       // 完成
        hideKeyboard(keyboardView);
    } else if (primaryCode == Keyboard.KEYCODE_DELETE) {// 回退
        if (editable != null && editable.length() > 0) {
            if (start > 0) {
                editable.delete(start - 1, start);
            }
        }
    } else if (primaryCode == Keyboard.KEYCODE_SHIFT) {// 大小写切换
        uperCase();
        keyboardView.setKeyboard(mKeyboard);
    } else if (primaryCode == 57419) {
        if (start > 0) {
            mEditText.setSelection(start - 1);
        }
    } else if (primaryCode == 57421) {
        if (start < mEditText.length()) {
            mEditText.setSelection(start + 1);
        }
    } else {
        editable.insert(start, Character.toString((char) primaryCode));
    }
}

/** 键盘大小写切换 */
private void uperCase() {
    final List keylist = mKeyboard.getKeys();
    if (isUperCase) {
        isUperCase = false;
        for (Key key : keylist) {
            if (key.label != null && isword(key.label.toString())) {
                key.label = key.label.toString().toLowerCase();
                key.codes[0] = key.codes[0] + 32;
            }
        }
    } else {
        isUperCase = true;
        for (Key key : keylist) {
            if (key.label != null && isword(key.label.toString())) {
                key.label = key.label.toString().toUpperCase();
                key.codes[0] = key.codes[0] - 32;
            }
        }
    }
}

/** 隐藏输入法,显示光标 */
public static  void setSystemInputGone(EditText editText) {
    if (Build.VERSION.SDK_INT >= 11) {
        Class cls = EditText.class;
        try {
            Method setShowSoftInputOnFocus = cls.getMethod("setShowSoftInputOnFocus", boolean.class);
            setShowSoftInputOnFocus.setAccessible(false);
            setShowSoftInputOnFocus.invoke(editText, false);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } else {
        editText.setInputType(android.text.InputType.TYPE_NULL);
        editText.setInputType(editText.getInputType());
    }
}

/** 显示键盘 */
public void showKeyboard() {
    int visibility = keyboardView.getVisibility();
    if (visibility == View.GONE || visibility == View.INVISIBLE) {
        Animation anim = AnimationUtils.translateAnimationOut(KEYBOARD_DURATION);
        keyboardView.setVisibility(View.VISIBLE);
        keyboardView.startAnimation(anim);
        anim.setAnimationListener(new AnimationListener() {
            @Override
            public void onAnimationEnd(Animation animation) {
                super.onAnimationEnd(animation);
                keyboardView.clearAnimation();
            }
        });
    }
}

/** 隐藏键盘 */
public static void hideKeyboard(final KeyboardView keyboardView) {
    if (keyboardView == null) {
        return;
    }
    if (keyboardView.getVisibility() == View.VISIBLE) {
        Animation anim = AnimationUtils.translateAnimationIn(KEYBOARD_DURATION);
        keyboardView.startAnimation(anim);
        anim.setAnimationListener(new AnimationListener() {
            @Override
            public void onAnimationEnd(Animation animation) {
                super.onAnimationEnd(animation);
                keyboardView.clearAnimation();
            }
        });
        keyboardView.setVisibility(View.GONE);
    }
}

private boolean isword(String str) {
    final String wordstr = "abcdefghijklmnopqrstuvwxyz";
    if (wordstr.indexOf(str.toLowerCase()) > -1) {
        return true;
    }
    return false;
}
...
}

核心代码。尊重劳动者成功,转发请注明出处。





    
    
    
    
    
    
    
    
    
    



    
    
    
    
    
    
    
    
    
    



    
    
    
    
    
    
    
    
    



    
    
    
    
    
    
    
    
    



    
    
    
    



再坚持一下,再努力一下,再前进一下,也许,成功离你只有一步之遥。有句话说,哪怕只有百分之一的希望,我也要付出百分之百的努力。学习不能停!!


  • Android 自定义键盘点击下载

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