處理鍵盤輸入

指定鍵盤類型

android:inputType = "phone | textPassword | textMultiLine | text"
android:imeOptions="actionSend | actionSearch | actionDone | actionGo"
           

EditText editText = (EditText) findViewById(R.id.search);

//顯示密碼框内容  
editText.setInputType(InputType.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_NORMAL);  

//隐藏密碼框内容  
editText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD); 

editText.setImeOptions(EditorInfo.IME_ACTION_GO);

//設定光标位置在文本框末尾
editText.setSelection(mEditPwd.getText().toString().length());

//show the password
editText.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
//hide the password
editText.setTransformationMethod(PasswordTransformationMethod.getInstance());

editText.setOnEditorActionListener(new OnEditorActionListener() {
    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        boolean handled = false;
        if (actionId == EditorInfo.IME_ACTION_SEND) {
            sendMessage();
            handled = true;
        }
        return handled;
    }
});
           

将輸入到 EditText 中的小寫字母轉化為大寫字母

//----------------小寫轉化為大寫--------------------------//
    public class InputLowerToUpper extends ReplacementTransformationMethod{ 
        @Override 
        protected char[] getOriginal() { 
            char[] lower = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z' }; 
            return lower; 
        } 

        @Override 
        protected char[] getReplacement() { 
            char[] upper = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z' }; 
            return upper; 
        } 

    }
           

final EditText textCarNumber=(EditText) viewNew.findViewById(R.id.borrow_carnumber);
        textCarNumber.setTransformationMethod(new InputLowerToUpper());
           

在Activity啟動時顯示輸入法

android:windowSoftInputMode="stateVisible"
           

InputMethodManager

public void showSoftKeyboard(View view) {
    if (view.requestFocus()) {
        InputMethodManager imm = (InputMethodManager)
                getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
    }
}
           

指定 UI 的響應方式

android:windowSoftInputMode = "adjust"
android:windowSoftInputMode="adjustResize"
           

處理單個按鍵事件

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    switch (keyCode) {
        case KeyEvent.KEYCODE_D:
            moveShip(MOVE_LEFT);
            return true;
        case KeyEvent.KEYCODE_F:
            moveShip(MOVE_RIGHT);
            return true;
        case KeyEvent.KEYCODE_J:
            fireMachineGun();
            return true;
        case KeyEvent.KEYCODE_K:
            fireMissile();
            return true;
        default:
            return super.onKeyUp(keyCode, event);
    }
}
           

處理修飾鍵

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    switch (keyCode) {
        ...
        case KeyEvent.KEYCODE_J:
            if (event.isShiftPressed()) {
                fireLaser();
            } else {
                fireMachineGun();
            }
            return true;
        case KeyEvent.KEYCODE_K:
            if (event.isShiftPressed()) {
                fireSeekingMissle();
            } else {
                fireMissile();
            }
            return true;
        default:
            return super.onKeyUp(keyCode, event);
    }
}