在我的應用程序中,我有一個隨機挑選的圖像。圖像出現在屏幕上,用戶可以將其滑動到一側。每次它是一個圖像a
,計數器應計數,但它不。我的int getMyRandomResId的返回值在條件中是錯誤的,還是錯誤在哪裏?android - switch if case語句的返回值
public class MainActivity extends Activity
{
private ImageView imageView;
public int sco = 0;
float x1, x2;
float y1, y2;
final Random rand = new Random();
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
score = (TextView)findViewById(R.id.textView1);
score.setText(String.valueOf(sco));
}
int getMyRandomResId()
{
int imag = rand.nextInt(4);
switch (imag)
{
case 0:
return R.drawable.a;
case 1:
return R.drawable.b;
case 2:
return R.drawable.c;
default:
return R.drawable.d;
}
}
public boolean onTouchEvent(MotionEvent touchevent)
{
final ViewPropertyAnimator animator = imageView.animate();
switch (touchevent.getAction())
{
case MotionEvent.ACTION_DOWN:
{
x1 = touchevent.getX();
y1 = touchevent.getY();
break;
}
case MotionEvent.ACTION_UP:
{
x2 = touchevent.getX();
y2 = touchevent.getY();
//if left to right sweep event on screen
if (x1 < x2 && (x2 - x1) >= (y1 - y2) && (x2 - x1) >= (y2 - y1))
{
if(getMyRandomResId() == R.drawable.a)
{
sco++;
score.setText(String.valueOf(sco));
}
animationRunning = true;
animator.translationX((imageView.getWidth()))
.setDuration(250)
.setListener(new AnimatorListenerAdapter()
{
@Override
public void onAnimationEnd(Animator animation)
{
imageView.setTranslationX(0);
imageView.setImageResource(getMyRandomResId());
animationRunning = false;
}
})
.start();
}
}
}
}
因爲我感到很困惑的答案@StefMa指着我,我要在這裏問你一件事:與調試器,你嘗試檢查,如果如果條件是到達?嘗試在你的getMyRandomId變量的結果和調試器檢查它的值 –
我猜你的代碼是正確的。但不幸的是(因爲隨機int),你還沒有達到這一點。我創建了一個測試設置,它是綠色的。這意味着一切都是正確的...請參閱https://git.io/v1Hrw – StefMa
@StefMa那麼你知道它爲什麼不起作用嗎? –