如何在Android屏幕上僅實現輕掃一下？

Question

我一直在嘗試只在屏幕上的一部分在Android上實施滑動手勢。我可以管理檢測屏幕上任何地方的滑動，但似乎無法進行檢查，以確保只向上/向下滑動，例如，從左側的前200個像素處發生。 以下是我希望在其中實施滑動手勢的代碼部分（由於滑動不起作用，我目前已經爲移動實現了箭頭，需要用代碼替換這些代碼以僅檢測滑動屏幕）。

import java.util.List; 
import android.graphics.Color; 
import android.graphics.Paint; 

import com.osahub.framework.Game; 
import com.osahub.framework.Graphics; 
import com.osahub.framework.Input.TouchEvent; 
import com.osahub.framework.Screen; 

public class LevelDetailsScreen extends Screen { 

    public Buttons buttons[] = new Buttons[Assets.NUMBER_OF_LEVELS + 1]; 
    public static int counter = 1; 
    public static boolean isUpEnabled = false, isDownEnabled = true; 
    public int displayInfoLevelNumber = 0; 

    public LevelDetailsScreen(Game game) { 
     super(game); 
     for (int i = 1; i <= Assets.NUMBER_OF_LEVELS; i++) { 
      buttons[i] = new Buttons(10, (60 + 75 * (i - 1))); 
     } 
    } 

    public class Buttons { 
     int centerX, centerY, speedY; 
     boolean movingDown = false, movingUp = false; 
     public int levelNumber = counter++; 

     Buttons(int centerX, int centerY) { 
      setCenterX(centerX); 
      setCenterY(centerY); 
     } 

     public void moveUp() { 
      speedY = -5; 
     } 

     public void moveDown() { 
      speedY = 5; 
     } 

     public void stopUp() { 
      setMovingUp(false); 
      stop(); 
     } 

     public void stopDown() { 
      setMovingDown(false); 
      stop(); 
     } 

     public void stop() { 
      if (isMovingDown() == false && isMovingUp() == false) { 
       speedY = 0; 
      } 

      if (isMovingDown() == false && isMovingUp() == true) { 
       moveDown(); 
      } 

      if (isMovingDown() == true && isMovingUp() == false) { 
       moveUp(); 
      } 
     } 

     public void update() { 
      centerY += speedY; 
     } 

     public void isValidMove() { 
      if (centerY >= 60 + 75 * (levelNumber - 1)) { 
       isUpEnabled = false; 
       stopUp(); 
      } else { 
       isUpEnabled = true; 
      } 
      if (centerY <= 360 + 75 * (levelNumber - 10)) { 
       isDownEnabled = false; 
       stopDown(); 
      } else { 
       isDownEnabled = true; 
      } 
     } 

     public int getCenterX() { 
      return centerX; 
     } 

     public void setCenterX(int centerX) { 
      this.centerX = centerX; 
     } 

     public int getCenterY() { 
      return centerY; 
     } 

     public void setCenterY(int centerY) { 
      this.centerY = centerY; 
     } 

     public int getSpeedY() { 
      return speedY; 
     } 

     public void setSpeedY(int speedY) { 
      this.speedY = speedY; 
     } 

     public boolean isMovingUp() { 
      return movingUp; 
     } 

     public void setMovingUp(boolean movingUp) { 
      this.movingUp = movingUp; 
     } 

     public boolean isMovingDown() { 
      return movingDown; 
     } 

     public void setMovingDown(boolean movingDown) { 
      this.movingDown = movingDown; 
     } 

    } 

    @Override 
    public void update(float deltaTime) { 

     for (int i = 1; i < MainMenuScreen.levels.length; i++) { 
      MainMenuScreen.levels[i] = game.retrieveLevelsData(i); 
     } 

     List<TouchEvent> touchEvents = game.getInput().getTouchEvents(); 

      // Swipe Needs to be implemented here, instead of the touch events. 
     int len = touchEvents.size(); 
     for (int i = 0; i < len; i++) { 
      TouchEvent event = touchEvents.get(i); 
      if (event.type == TouchEvent.TOUCH_DOWN) { 
       if (inBounds(event, 60, 8, 43, 39)) { 
        for (int j = 1; j < buttons.length; j++) { 
         buttons[j].moveUp(); 
         buttons[j].setMovingUp(true); 
        } 
       } 
       if (inBounds(event, 60, 433, 43, 39)) { 
        for (int j = 1; j < buttons.length; j++) { 
         buttons[j].moveDown(); 
         buttons[j].setMovingDown(true); 
        } 
       } 
       for (int j = 1; j < buttons.length; j++) { 
        if (inBounds(event, buttons[j].centerX, buttons[j].centerY, buttons[j].centerX + 151, 
          buttons[j].centerY + 60)) { 
         displayInfoLevelNumber = buttons[j].levelNumber; 
        } 
       } 
      } 

      if (event.type == TouchEvent.TOUCH_UP) { 
       if (inBounds(event, 60, 8, 43, 39)) { 
        for (int j = 1; j < buttons.length; j++) { 
         buttons[j].stopUp(); 
        } 
       } 
       if (inBounds(event, 60, 433, 43, 39)) { 
        for (int j = 1; j < buttons.length; j++) { 
         buttons[j].stopDown(); 
        } 
       } 
      } 
     } 
     for (int j = 1; j < buttons.length; j++) { 
      buttons[j].update(); 
      buttons[j].isValidMove(); 
     } 
    } 

    private boolean inBounds(TouchEvent event, int x, int y, int width, int height) { 
     if (event.x > x && event.x < x + width - 1 && event.y > y && event.y < y + height - 1) 
      return true; 
     else 
      return false; 
    } 

    @Override 
    public void paint(float deltaTime) { 
     // drawing things on screen 
} 

    @Override 
    public void pause() { 
    } 

    @Override 
    public void resume() { 

    } 

    @Override 
    public void dispose() { 

    } 

    @Override 
    public void backButton() { 
     counter = 1; 
     game.setScreen(new LevelSelectionScreen(game)); 
    } 
    } 

擴展文件Screen是進一步調用類AndroidGame的接口。 AndroidGame如下：

package com.osahub.framework.implementation; 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedIns 

import android.annotation.SuppressLint; 
import android.app.Activity; 
import android.content.Context; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.content.res.Configuration; 
import android.graphics.Bitmap; 
import android.graphics.Bitmap.Config; 
import android.graphics.Typeface; 
import android.net.Uri; 
import android.os.Bundle; 
import android.os.PowerManager; 
import android.os.PowerManager.WakeLock; 
import android.view.Window; 
import android.view.WindowManager; 

import com.osahub.framework.Audio; 
import com.osahub.framework.FileIO; 
import com.osahub.framework.Game; 
import com.osahub.framework.Graphics; 
import com.osahub.framework.Input; 
import com.osahub.framework.Screen; 
import com.osahub.robotgame.Assets; 
import com.osahub.robotgame.Level; 
import com.osahub.robotgame.MainMenuScreen; 

public abstract class AndroidGame extends Activity implements Game { 
    AndroidFastRenderView renderView; 
    Graphics graphics; 
    Audio audio; 
    Input input; 
    FileIO fileIO; 
    Screen screen; 
    WakeLock wakeLock; 

@OverridetanceState); 

    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 

    boolean isPortrait = getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT; 
    int frameBufferWidth = isPortrait ? 480 : 800; 
    int frameBufferHeight = isPortrait ? 800 : 480; 
    Bitmap frameBuffer = Bitmap.createBitmap(frameBufferWidth, frameBufferHeight, Config.RGB_565); 

    float scaleX = (float) frameBufferWidth/getWindowManager().getDefaultDisplay().getWidth(); 
    float scaleY = (float) frameBufferHeight/getWindowManager().getDefaultDisplay().getHeight(); 

    renderView = new AndroidFastRenderView(this, frameBuffer); 
    graphics = new AndroidGraphics(getAssets(), frameBuffer); 
    fileIO = new AndroidFileIO(this); 
    audio = new AndroidAudio(this); 
    input = new AndroidInput(this, renderView, scaleX, scaleY); 
    screen = getInitScreen(); 
    setContentView(renderView); 

    PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE); 
    wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, "MyGame"); 

} 

@Override 
public void onResume() { 
    super.onResume(); 
    wakeLock.acquire(); 
    screen.resume(); 
    renderView.resume(); 
} 

@Override 
public void onPause() { 
    super.onPause(); 
    wakeLock.release(); 
    renderView.pause(); 
    screen.pause(); 

    if (isFinishing()) 
     screen.dispose(); 
} 

@Override 
public Input getInput() { 
    return input; 
} 

@Override 
public FileIO getFileIO() { 
    return fileIO; 
} 

@Override 
public Graphics getGraphics() { 
    return graphics; 
} 

@Override 
public Audio getAudio() { 
    return audio; 
} 

@Override 
public void setScreen(Screen screen) { 
    if (screen == null) 
     throw new IllegalArgumentException("Screen must not be null"); 

    this.screen.pause(); 
    this.screen.dispose(); 
    screen.resume(); 
    screen.update(0); 
    this.screen = screen; 
} 

public Screen getCurrentScreen() { 
    return screen; 
} 
} 

任何幫助，將不勝感激。非常感謝..

Answer 1

可以設置透明單位精靈或地區要獲得touchlistners圖像和 image.setonTouchListner（）監聽有觸摸

希望這有助於