Android 操作栏内或下方的导航选项卡?
我想知道导航选项卡是在操作栏内还是在操作栏下。在第一种(无效)方法中,我假设动作栏位于横向的动作栏内部,在纵向的动作栏下方。以下是测试活动代码:Android 操作栏内或下方的导航选项卡?,android,tabs,android-actionbar,android-tabs,Android,Tabs,Android Actionbar,Android Tabs,我想知道导航选项卡是在操作栏内还是在操作栏下。在第一种(无效)方法中,我假设动作栏位于横向的动作栏内部,在纵向的动作栏下方。以下是测试活动代码: public class TabTestActivity extends FragmentActivity implements ActionBar.TabListener { SectionsPagerAdapter mSectionsPagerAdapter; ViewPager mViewPager; p
public class TabTestActivity extends FragmentActivity implements
ActionBar.TabListener {
SectionsPagerAdapter mSectionsPagerAdapter;
ViewPager mViewPager;
private AlertDialog.Builder dialogBuilder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab_test);
dialogBuilder = new AlertDialog.Builder(this);
dialogBuilder.setTitle("Tabs inside or below action bar?");
dialogBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mSectionsPagerAdapter = new SectionsPagerAdapter(
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager
.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
actionBar.addTab(actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.tab_test, menu);
return true;
}
@Override
public void onTabSelected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
mViewPager.setCurrentItem(tab.getPosition());
AlertDialog notifyTabsLocationDialog = dialogBuilder.create();
// First approach: assume that tabs are inside action bar in landscape
// and below action bar in landscape, but they are always inside action
// bar for my tablet
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
notifyTabsLocationDialog.setMessage("Tabs below action bar");
} else {
notifyTabsLocationDialog.setMessage("Tabs inside action bar");
}
notifyTabsLocationDialog.show();
}
@Override
public void onTabUnselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
@Override
public void onTabReselected(ActionBar.Tab tab,
FragmentTransaction fragmentTransaction) {
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
Fragment fragment = new DummySectionFragment();
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
@Override
public int getCount() {
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;
}
}
public static class DummySectionFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public DummySectionFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_tab_test_dummy,
container, false);
TextView dummyTextView = (TextView) rootView
.findViewById(R.id.section_label);
dummyTextView.setText(Integer.toString(getArguments().getInt(
ARG_SECTION_NUMBER)));
return rootView;
}
}
}
公共类TabTestActivity扩展了FragmentActivity实现
ActionBar.TabListener{
分段SPAGERADAPTER mSectionsPagerAdapter;
ViewPager mViewPager;
私有AlertDialog.Builder对话框生成器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u tab\u test);
dialogBuilder=新建AlertDialog.Builder(此);
setTitle(“操作栏内或下方的选项卡?”);
dialogBuilder.setPositiveButton(“确定”,新的DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog,int which){
}
});
最终ActionBar ActionBar=getActionBar();
actionBar.setNavigationMode(actionBar.NAVIGATION\u MODE\u选项卡);
mSectionsPagerAdapter=新节spageradapter(
getSupportFragmentManager());
mViewPager=(ViewPager)findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager
.setOnPageChangeListener(新的ViewPager.SimpleOnPageChangeListener(){
@凌驾
已选择页面上的公共无效(内部位置){
actionBar.setSelectedNavigationItem(位置);
}
});
对于(int i=0;i
来自ActionBar指南:
ActionBar提供的选项卡非常理想,因为它们适应不同的屏幕大小。例如,当屏幕足够宽时,选项卡出现在操作栏中,与操作按钮一起(如图7所示的平板电脑上),而在窄屏幕上,选项卡出现在单独的栏中(称为“堆叠操作栏”,如图8所示)。在某些情况下,Android系统会将您的选项卡项显示为下拉列表,以确保最适合操作栏
是的,你的假设是正确的。但是参数不是纵向或横向,而是有足够或没有足够的空间将选项卡与actionbar合并。我发现了一个使用反射来访问布尔字段
mHasEmbeddedTabs
的工作环境actionbar
:
Class<?> actionBarClass = getActionBar().getClass();
Field mHasEmbeddedTabs = actionBarClass.getDeclaredField("mHasEmbeddedTabs");
mHasEmbeddedTabs.setAccessible(true);
if (mHasEmbeddedTabs.getBoolean(getActionBar())) {
notifyTabsLocationDialog.setMessage("Tabs inside action bar");
} else {
notifyTabsLocationDialog.setMessage("Tabs below action bar");
}
Class actionBarClass=getActionBar().getClass();
字段mHasEmbeddedTabs=actionBarClass.getDeclaredField(“mHasEmbeddedTabs”);
mhasembeddeddtabs.setAccessible(true);
if(mHasEmbeddedTabs.getBoolean(getActionBar())){
notifyTabsLocationDialog.setMessage(“操作栏中的选项卡”);
}否则{
notifyTabsLocationDialog.setMes