Question

我为Android 4.0创建了一个带有“Swipe View + Title Strip”导航类型的项目。我想要的是当我点击标题或在页面之间滑动时显示不同的页面。例如，我有三个选项卡，每个选项卡都显示一个不同的网页。我现在如何创建一个简单的webview应用程序，它使用javascript等加载网页。请允许有人帮助我修改这个代码，因此我每次都会从这些标题中点击标签，以显示不同的标题。我看到一些int位置然后切换（位置）{case 0，case 1，case 2}等但我不知道在哪里放这个代码。

这是股票代码，有人可以为我修改它吗？我这几周都在搜索这个问题:(（。

package com.actionbartest;

import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.content.Context;
import android.os.Bundle;
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.app.NavUtils;
etc.

public class MainActivity extends FragmentActivity {

/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the
 * sections. We use a {@link android.support.v4.app.FragmentPagerAdapter} derivative, which will
 * keep every loaded fragment in memory. If this becomes too memory intensive, it may be best
 * to switch to a {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
ViewPager mViewPager;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // Create the adapter that will return a fragment for each of the three primary sections
    // of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());


    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}




/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary
 * sections of the app.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int i) {
        Fragment fragment = new DummySectionFragment();
        Bundle args = new Bundle();
        args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, i + 1);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
            case 0: return getString(R.string.title_section1).toUpperCase();
            case 1: return getString(R.string.title_section2).toUpperCase();
            case 2: return getString(R.string.title_section3).toUpperCase();
        }
        return null;
    }
}

/**
 * A dummy fragment representing a section of the app, but that simply displays dummy text.
 */
public static class DummySectionFragment extends Fragment {
    public DummySectionFragment() {
    }

    public static final String ARG_SECTION_NUMBER = "section_number";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        TextView textView = new TextView(getActivity());
        textView.setGravity(Gravity.CENTER);
        Bundle args = getArguments();
        textView.setText(Integer.toString(args.getInt(ARG_SECTION_NUMBER)));
        return textView;
    }
}
}

Answer 1

您可以在assets / www文件夹（index1.html，index2.html，index3.html）中创建3个html文件，而不是将生成文本视图的onCreateView（）更改为生成webview，如：

    WebView mWeb = new WebView(getActivity());
    WebSettings webSettings = mWeb.getSettings();
    webSettings.setJavaScriptEnabled(true);
    mWeb.setVerticalScrollBarEnabled(true);
    Bundle args = getArguments();
mWeb.loadUrl("file:///android_asset/www/index"+args.getInt(ARG_SECTION_NUMBER)+".html");
return mWeb;

这种方法的不好之处在于，当您轻扫webview重新加载时。您应该将onCreateView设置为仅填充一次视图并阻止webview在刷卡时重新加载，但我不知道如何完成此操作。

我希望看过这篇文章的人会在每次重点关注网页视图时发表评论。

Android：寻呼机标题条和WebView

1 个答案: