Question

我有一个EditText，我尝试从我的dispatchKeyEvent拨打Activity，将文字插入EditText，如下所示：

public class MainActivity extends AppCompatActivity implements View.OnFocusChangeListener {

    String TAG = "test";
    EditText editText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d(TAG, "onCreate: ");
        setContentView(R.layout.activity_main);
        editText = (EditText) findViewById(R.id.edittext);
        editText.setOnFocusChangeListener(this);
    }

    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        Log.d(TAG, "onFocusChange: "+hasFocus);
        if(hasFocus) {
            dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_SHIFT_LEFT));
            dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_SHIFT_LEFT));
            dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_L));
            dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_O));
            dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_L));
        }
    }
}

字母工作正常，但KeyEvents移位和大写字母无效。上面的代码将“lol”写入EditText而不是“Lol”，这是预期的。为什么呢？

Answer 1

您可以使用另一个KeyEvent（）构造函数来使用移位元数据，如下所示：

dispatchKeyEvent(new KeyEvent(0,0,KeyEvent.ACTION_DOWN,KeyEvent.KEYCODE_L,0,KeyEvent.META_SHIFT_ON));

来源：https://developer.android.com/reference/android/view/KeyEvent.html

Android dispatchKeyEvent不适用于所有KeyEvent代码

1 个答案: