是否可以更改Android选项卡,如果您按下一个选项卡,它会到达TabHost的中心。只有3个标签可见,无论有多少。就像Android 4.0 Google音乐应用程序一样! 如果是的话,你会怎么做?
谢谢!
答案 0 :(得分:6)
我确实找到了自己的答案。
如果有人需要,应该这样做:
final HorizontalScrollView mHorizontalScrollView;
float scale = getResources().getDisplayMetrics().density;
final double tabWidth = (int) (150 * scale + 0.5f);
for (int i = 0; i < tabHost.getTabWidget().getTabCount(); i++) {
tabHost.getTabWidget().getChildTabViewAt(i).getLayoutParams().width = (int) tabWidth;
}
final double screenWidth = getWindowManager().getDefaultDisplay()
.getWidth();
mHorizontalScrollView = (HorizontalScrollView) findViewById(R.id.hscrollview);
tabHost.setOnTabChangedListener(new OnTabChangeListener() {
@Override
public void onTabChanged(String tabId) {
int nrOfShownCompleteTabs = ((int) (Math.floor(screenWidth
/ tabWidth) - 1) / 2) * 2;
int remainingSpace = (int) ((screenWidth - tabWidth - (tabWidth * nrOfShownCompleteTabs)) / 2);
int a = (int) (tabHost.getCurrentTab() * tabWidth);
int b = (int) ((int) (nrOfShownCompleteTabs / 2) * tabWidth);
int offset = (a - b) - remainingSpace;
mHorizontalScrollView.scrollTo(offset, 0);
}
});