我的android API 15和16上的viewPager有问题,我的应用程序基本上是简单的遥控器,用于三个屏幕的机顶盒,在第一个屏幕上你可以选择你要控制哪个盒子,第二个和第三个只是带控件的屏幕。现在的问题是,所有其他版本的android都可以完美地运行,但是在API 15和16上,当应用程序启动时,我无法使用带有框的creen,当我点击任何地方时它会检测到第二个屏幕上的操作是控件,当我滑动到第三个屏幕然后返回时,onCreateView再次调用第一个屏幕,一切都运行良好。以下是第一个和第二个屏幕 的图像 这是我的viewPager代码:
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (position) {
case 0:
return boxesFragment;
case 1:
return miscpadFragment;
case 2:
if (metrics.densityDpi == DisplayMetrics.DENSITY_MEDIUM) {
return volPadFragment;
} else return numberPadFragment;
case 3:
return numberPadFragment;
}
return null;
}
@Override
public int getCount() {
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch(metrics.densityDpi){
case DisplayMetrics.DENSITY_MEDIUM:
if (isTablet) {
return 2;
} else return 4;
case DisplayMetrics.DENSITY_HIGH:
if (isTablet) {
return 2;
} else return 3;
case DisplayMetrics.DENSITY_XHIGH:
if (isTablet) {
return 2;
} else return 3;
case DisplayMetrics.DENSITY_XXHIGH:
return 3;
case DisplayMetrics.DENSITY_TV:
return 2;
}
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
Locale l = Locale.getDefault();
switch (position) {
case 0:
return getString(R.string.title_section1).toUpperCase(l);
case 1:
return getString(R.string.title_section2).toUpperCase(l);
case 2:
return getString(R.string.title_section3).toUpperCase(l);
}
return null;
}
}
和我也用于动画的DepthPageTransformer:
public class DepthPageTransformer implements ViewPager.PageTransformer {
private static final float MIN_SCALE = 0.8f;
public void transformPage(View view, float position) {
int pageWidth = view.getWidth();
if (position < -1) { // [-Infinity,-1)
// This page is way off-screen to the left.
view.setAlpha(0);
} else if (position <= 0) { // [-1,0]
// Use the default slide transition when moving to the left page
view.setAlpha(1);
view.setTranslationX(0);
view.setScaleX(1);
view.setScaleY(1);
} else if (position <= 1) { // (0,1]
// Fade the page out.
view.setAlpha(1 - position);
// Counteract the default slide transition
view.setTranslationX(pageWidth * -position);
// Scale the page down (between MIN_SCALE and 1)
float scaleFactor = MIN_SCALE
+ (1 - MIN_SCALE) * (1 - Math.abs(position));
view.setScaleX(scaleFactor);
view.setScaleY(scaleFactor);
} else { // (1,+Infinity]
// This page is way off-screen to the right.
view.setAlpha(0);
}
}
}
答案 0 :(得分:2)
所以我解决了我的问题,它是我从developers.google.com下载的DepthPageTransformer中的transformPage方法我修改了它:
public void transformPage(View view, float position) {
float translationX;
float scale;
float alpha;
if (position >= 1 || position <= -1) {
// Fix for https://code.google.com/p/android/issues/detail?id=58918
translationX = 0;
scale = 1;
alpha = 1;
} else if (position >= 0) {
translationX = -view.getWidth() * position;
scale = -0.2f * position + 1;
alpha = Math.max(1 - position, 0);
} else {
translationX = 0.5f * view.getWidth() * position;
scale = 1.0f;
alpha = Math.max(0.1f * position + 1, 0);
}
view.setTranslationX( translationX);
view.setScaleX(scale);
view.setScaleY(scale);
view.setAlpha(alpha);
}
一切都很完美。