public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
float vx = Math.abs(velocityX); // 取其绝对值
float vy = Math.abs(velocityY);
// ----begin设置浮动框的弹出和收回--------------------
if (vy > vx) {
if (velocityY > 0) { // 设置弹出
if (flag == false) {
int height = myRelativeLayout.getHeight();
Animation myTranslateAnimation = new TranslateAnimation(0, 0, -height, 0);
myTranslateAnimation.setDuration(500);
myRelativeLayout.setAnimation(myTranslateAnimation);
myRelativeLayout.setVisibility(View.VISIBLE);
flag = true;
}
} else if (velocityY < 0) { // 设置收回
if (flag == true) {
int height = myRelativeLayout.getHeight();
Animation myTranslateAnimation = new TranslateAnimation(0, 0, 0, -height);
myTranslateAnimation.setDuration(500);
myRelativeLayout.setAnimation(myTranslateAnimation);
myRelativeLayout.setVisibility(View.GONE);
flag = false;
}
}
} else
// -----end设置浮动框的弹出和收回---------------------------------
// -----begin设置左右滑动翻页-----------------------
if (vx > vy) {
if (velocityX > 0) { // 前一页
if (myWebView.canGoBack()) {
myWebView.goBack();
int width = myWebView.getWidth();
Animation myTranslateAnimation = new TranslateAnimation(0, width, 0, 0);
myTranslateAnimation.setDuration(400);
myWebView.setAnimation(myTranslateAnimation);
}
} else if (velocityX < 0) { // 后一页
if (myWebView.canGoForward()) {
myWebView.goForward();
int width = myWebView.getWidth();
Animation myTranslateAnimation = new TranslateAnimation(0, -width, 0, 0);
myTranslateAnimation.setDuration(400);
myWebView.setAnimation(myTranslateAnimation);
}
}
}
// -----end设置左右滑动翻页------------------------
return false;
}
public boolean onDown(MotionEvent e) {
if (flag == true) {
int height = myRelativeLayout.getHeight();
Animation myTranslateAnimation = new TranslateAnimation(0, 0, 0, -height);
myTranslateAnimation.setDuration(500);
myRelativeLayout.setAnimation(myTranslateAnimation);
myRelativeLayout.setVisibility(View.GONE);
flag = false;
}
return true;
}
@Override
public void onBackPressed() {
if (backScreen.getVisibility() == View.INVISIBLE) {
backScreen.setVisibility(View.VISIBLE);
AlphaAnimation screenAnim = new AlphaAnimation(0.5f, 0.5f);
screenAnim.setDuration(0);
screenAnim.setFillAfter(true);
backScreen.setAnimation(screenAnim);
resumeButton.setEnabled(true);
exitButton.setEnabled(true);
} else {
backScreen.setVisibility(View.INVISIBLE);
AlphaAnimation screenAnim = new AlphaAnimation(0f, 0f);
screenAnim.setDuration(0);
screenAnim.setFillAfter(true);
backScreen.setAnimation(screenAnim);
resumeButton.setEnabled(false);
exitButton.setEnabled(false);
}
}