java - 使用 GLSurfaceView 显示软件键盘(并从中获取输入)

Question

我想为我的 OpenGL ES 2.0 应用程序获取用户输入，但有 2 个问题:

• 1) 如何将软件键盘置于应用程序的前端？
• 2) 我怎样才能从中获取输入？

我试着用这个:

//OpenGL ES 2.0 view class
public class OGLES2View extends GLSurfaceView 
{
    private static final int OGLES_VERSION = 2;
    private static Handler softKeyboardHandler;
    private final static int SHOW_IME_KEYBOARD = 0;
    private final static int HIDE_IME_KEYBOARD = 1;
    private static EditText textEdit;
    private static  InputMethodManager imm;

    private void setSoftKeyboardHandler()
    {
        softKeyboardHandler = new Handler()
        {
            public void handleMessage(Message msg)
            {
                switch(msg.what)
                {
                    case SHOW_IME_KEYBOARD:
                        textEdit.requestFocus();
                        imm.showSoftInput(textEdit,inputMethodManager.SHOW_IMPLICIT);//Nothing happens
                        Log.i("GLVIEW","SHOW KEYBOARD");
                        break;

                    case HIDE_IME_KEYBOARD:
                        imm.hideSoftInput(textEdit, 0);
                        Log.i("GLVIEW","HIDE KEYBOARD");
                        break;

                    default:
                        break;
                }
            }
        };
    }

    public OGLES2View(Context context) 
    {
        super(context);
        textEdit = new EditText(context);
        setEGLContextClientVersion(OGLES_VERSION);
        setRenderer(new OGLES2Renderer());
        imm = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
        setSoftKeyboardHandler();
    }

    public static void showIMEKeyboard() 
    {
        softKeyboardHandler.sendEmptyMessage(SHOW_IME_KEYBOARD);
    }

    public static void hideIMEKeyboard()
    {
        softKeyboardHandler.sendEmptyMessage(HIDE_IME_KEYBOARD);
    }

    //In main activity class
    private GLSurfaceView ogles2SurfaceView = null;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        //...
        ogles2SurfaceView = new OGLES2View(this);
        setContentView(ogles2SurfaceView);
    }

处理程序收到消息，但我没有软键盘。为了捕捉文本，我写了一些类:

public class TextInputWatcher implements TextWatcher

和:

textEdit.addTextChangedListener(/*TextInputWatcher instance*/);

或者扩展 TextEdit 以便它在后面捕获输入的文本或回车键。

P.S. 我有一个平板电脑 - 变形金刚，所以附有一个硬件键盘。我试过有没有，但没有区别。那么额外的问题 - 如果有硬件键盘，它会阻止弹出软件键盘吗？然后如何从中获取输入？

Answer 1

显示键盘:

getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);

隐藏键盘:

getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);