在我的应用程序中，我想随机选择一张图片并将其放在屏幕中央。之后，可以执行动画，图像将被移动并随后重置到其原始位置。然后我想选择开关盒的新图像，但图像始终保持不变。我该如何解决？
public class MainActivity extends Activity implements OnGestureListener
{
private ImageView imageView;
float x1,x2;
float y1, y2;
public int sco = 0;
TextView score;
final Random rand = new Random();
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.imageview1);
imageView.setImageResource(getMyRandomResId());
score = (TextView)findViewById(R.id.textView2);
}
int imag = rand.nextInt(4);
int getMyRandomResId() {
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;
}
}
private boolean animationRunning = false;
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 (!animationRunning) {
//left to right sweep event on screen
if (x1 < x2 && (x2-x1)>=(y1-y2) && (x2-x1)>=(y2-y1)) {
animationRunning = true;
animator.translationX(imageView.getWidth() * 2)
.setDuration(180)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if(getMyRandomResId() == R.drawable.ballgrue) {
sco++;
}
imageView.setTranslationX(0);
imageView.setImageResource(getMyRandomResId());
animationRunning = false;
}
})
.start();
}
}
}
}
}
}
最佳答案
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;
}
}
你得到相同图像的原因只有这个
希望对你有帮助
关于java - android - 重复一个switch语句，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41299828/