我正在使用操作栏Sherlock为Android
开发一个应用程序。我目前有三个选项卡,包含以下类别的家用计算器和驱动器。
我之前制作了一个计算器应用程序,我希望能够在计算器选项卡中使用该代码,如何在操作栏Sherlock选项卡中使用该活动?
这是我的查看寻呼机代码:
package com.d4a.stzh;
import com.d4a.stzh.FragmentTab1;
import com.d4a.stzh.FragmentTab2;
import com.d4a.stzh.FragmentTab3;
import com.d4a.stzh.CMainActivity;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class ViewPagerAdapter extends FragmentPagerAdapter {
// Declare the number of ViewPager pages
final int PAGE_COUNT = 4;
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int arg0) {
switch (arg0) {
// Open FragmentTab1.java
case 0:
FragmentTab1 fragmenttab1 = new FragmentTab1();
return fragmenttab1;
// Open FragmentTab2.java
case 1:
FragmentTab2 fragmenttab2 = new FragmentTab2();
return fragmenttab2;
// Open FragmentTab3.java
case 2:
FragmentTab3 fragmenttab3 = new FragmentTab3();
return fragmenttab3;
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return PAGE_COUNT;
}
}
这是我的MainActivity代码:
package com.d4a.stzh;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.Window;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.d4a.stzh.ViewPagerAdapter;
import com.d4a.stzh.R;
public class MainActivity extends SherlockFragmentActivity {
// Declare Variables
ActionBar mActionBar;
ViewPager mPager;
Tab tab;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get the view from activity_main.xml
setContentView(R.layout.activity_main);
// Activate Navigation Mode Tabs
mActionBar = getSupportActionBar();
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayShowHomeEnabled(false);
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Locate ViewPager in activity_main.xml
mPager = (ViewPager) findViewById(R.id.pager);
// Activate Fragment Manager
FragmentManager fm = getSupportFragmentManager();
// Capture ViewPager page swipes
ViewPager.SimpleOnPageChangeListener ViewPagerListener = new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
super.onPageSelected(position);
// Find the ViewPager Position
mActionBar.setSelectedNavigationItem(position);
}
};
mPager.setOnPageChangeListener(ViewPagerListener);
// Locate the adapter class called ViewPagerAdapter.java
ViewPagerAdapter viewpageradapter = new ViewPagerAdapter(fm);
// Set the View Pager Adapter into ViewPager
mPager.setAdapter(viewpageradapter);
// Capture tab button clicks
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// Pass the position on tab click to ViewPager
mPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
};
// Create first Tab
tab = mActionBar.newTab().setText("Home").setTabListener(tabListener);
mActionBar.addTab(tab);
// Create second Tab
tab = mActionBar.newTab().setText("Books").setTabListener(tabListener);
mActionBar.addTab(tab);
// Create third Tab
tab = mActionBar.newTab().setText("Drive").setTabListener(tabListener);
mActionBar.addTab(tab);
// Create fourth Tab
tab = mActionBar.newTab().setText("Calculator").setTabListener(tabListener);
mActionBar.addTab(tab);
}
}
有没有办法在Sherlock片段标签中插入活动?
答案 0 :(得分:1)
了解您的信息。
片段必须始终嵌入到活动中,片段的生命周期直接受主机活动生命周期的影响。例如,当活动暂停时,其中的所有片段也会暂停,当活动被销毁时,所有片段也都会被破坏。
来源:http://developer.android.com/guide/components/fragments.html
您无法在片段中使用活动。