小编FuC*_*Sam的帖子

我按照开发可滑动选项卡的教程进行操作.当我导入时:

import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;

Android Studio显示我无法解析符号"ViewPager"和"FragmentActivity".怎么解决这个？谢谢.

以下是我项目的完整代码.

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;

public class MainActivity extends FragmentActivity implements
    ActionBar.TabListener {

private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "Top Rated", "Games", "Movies" };

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Initilization
    viewPager = (ViewPager) findViewById(R.id.pager);
    actionBar = getActionBar();
    mAdapter = new TabsPagerAdapter(getSupportFragmentManager());

    viewPager.setAdapter(mAdapter);
    actionBar.setHomeButtonEnabled(false);
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Adding Tabs
    for (String tab_name …

当用户单击显示的文本时,此程序将弹出警告消息,然后将文本设置为大写.

<script src="jquery-min.js"></script>
<script>
   //run once the page is loaded
   jquery(document).ready(function ($) {
       //Attach a click event to the span element
       $('#test_span').click(function () {
          //Read the elemnt's current value
          var elemnt_text = $('#test_span').html();
          //display the curretn value of this span
          alert(element_text);
          //convert the value to upper case
          element_text = element_text.toUpperCase();
          //change the span to this new value
          $('#test_span').html(element_text);
       });
  });
</script>
</head>
<span id='test_span'>Testing jQuery</span>