android – FragmentActivty中的ActionBarCompat

我收到了错误
“对于MainActivity类型,方法getSupportActionBar()未定义”

import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBar.Tab;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {

AppSectionsPagerAdapter mAppSectionsPagerAdapter;

ViewPager mViewPager;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager());


    final ActionBar actionBar = getSupportActionBar();


    //actionBar.setHomeButtonEnabled(false);


    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);


    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mAppSectionsPagerAdapter);
    mViewPager.setonPagechangelistener(new ViewPager.SimpleOnPagechangelistener() {
        @Override
        public void onPageSelected(int position) {

            actionBar.setSelectednavigationItem(position);
        }
    });

    for (int i = 0; i < mAppSectionsPagerAdapter.getCount(); i++) {
        actionBar.addTab(
                actionBar.newTab()
                        .setText(mAppSectionsPagerAdapter.getPageTitle(i))
                        .setTabListener(this));
    }
}
.
.
.
}

请帮帮我. setHomeButtonEnabled()是否支持？

哪个更好ActionBarCompat或ActionBarSherlock？

最佳答案

当应用程序使用getSupportActionBar()时,您的活动必须从ActionBaractivity扩展.它在您已添加的支持包中定义,我可以在您的导入中看到.

public class MainActivity extends ActionBaractivity
                          implements ActionBar.TabListener {
    // your code goes here
}

原文地址：https://www.jb51.cc/android/430306.html