Android Studio，在新活动中显示完整的 WebView

Posted 2023-05-07

【中文标题】Android Studio，在新活动中显示完整的 WebView

【英文标题】：Android Studio, show full WebView in new activity

【发布时间】：2015-04-06 22:58:28

【问题描述】：

我是 android 的新手，我正在尝试制作一个简单的应用程序，其中一个视图显示一个全尺寸的 webview。 我已经开始了一个带有导航抽屉的新项目，并添加了四个仅显示文本字段的菜单。其中一个菜单选项卡称为 ECG。当我转到菜单并单击它时，我希望此选项卡的视图以全屏显示 web 视图 - 而不是在浏览器中。 我在 xml 文件中创建了一个 webview，但我不知道如何在该视图中呈现网站。

希望大家能帮帮我！提前致谢！

我的 MainActivity.java：

package com.nybroe.blivredder;

import android.app.Activity;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.widget.DrawerLayout;
import android.webkit.WebView;

public class MainActivity extends ActionBarActivity
    implements NavigationDrawerFragment.NavigationDrawerCallbacks 

private NavigationDrawerFragment mNavigationDrawerFragment;
private CharSequence mTitle;


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

    mNavigationDrawerFragment = (NavigationDrawerFragment)
            getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
    mTitle = getTitle();
    mNavigationDrawerFragment.setUp(
            R.id.navigation_drawer,
            (DrawerLayout) findViewById(R.id.drawer_layout));


@Override
public void onNavigationDrawerItemSelected(int position) 

    Fragment objFragment = null;

    switch (position) 
        case 0:
            objFragment = new FrontPage();
            break;
        case 1:
            objFragment = new ECG();
            break;
        case 2:
            objFragment = new Electrodes();
            break;
        case 3:
            objFragment = new Arrhythmia();
            break;

    

    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction()
            .replace(R.id.container, objFragment)
            .commit();


public void onSectionAttached(int number) 
    switch (number) 
        case 0:
            mTitle = getString(R.string.title_section0);
            break;
        case 1:
            mTitle = getString(R.string.title_section1);
            break;
        case 2:
            mTitle = getString(R.string.title_section2);
            break;
        case 3:
            mTitle = getString(R.string.title_section3);
            break;
    


public void restoreActionBar() 
    ActionBar actionBar = getSupportActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
    actionBar.setDisplayShowTitleEnabled(true);
    actionBar.setTitle(mTitle);



@Override
public boolean onCreateOptionsMenu(Menu menu) 
    if (!mNavigationDrawerFragment.isDrawerOpen()) 
        getMenuInflater().inflate(R.menu.main, menu);
        restoreActionBar();
        return true;
    
    return super.onCreateOptionsMenu(menu);


@Override
public boolean onOptionsItemSelected(MenuItem item) 
    int id = item.getItemId();

    if (id == R.id.action_settings) 
        return true;
    

    return super.onOptionsItemSelected(item);


public static class PlaceholderFragment extends Fragment 
    private static final String ARG_SECTION_NUMBER = "section_number";

    public static PlaceholderFragment newInstance(int sectionNumber) 
        PlaceholderFragment fragment = new PlaceholderFragment();
        Bundle args = new Bundle();
        args.putInt(ARG_SECTION_NUMBER, sectionNumber);
        fragment.setArguments(args);
        return fragment;
    

    public PlaceholderFragment() 
    

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) 
        View rootView = inflater.inflate(R.layout.fragment_main, container, false);
        return rootView;
    

    @Override
    public void onAttach(Activity activity) 
        super.onAttach(activity);
        ((MainActivity) activity).onSectionAttached(
                getArguments().getInt(ARG_SECTION_NUMBER));
    

我的心电图.java

package com.nybroe.blivredder;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;

public class ECG extends Fragment
WebView web_view;
View rootview;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
    rootview = inflater.inflate(R.layout.ecg_main, container, false);
    return rootview;

我的 ecg_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_ android:layout_>
<WebView
    android:layout_
    android:layout_
    android:id="@+id/webView1">
    </WebView>
</RelativeLayout>

【问题讨论】：

嘿伙计，你的问题让我受益匪浅。谢谢

【参考方案1】：

试试这个：

public class ECG extends Fragment
    WebView web_view;
    View rootview;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
        rootview = inflater.inflate(R.layout.ecg_main, container, false);
        web_view = (WebView) rootview.findViewById(R.id.webView1);
        return rootview;
    

在xml中：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_ android:layout_>
<WebView
    android:layout_
    android:layout_
    android:id="@+id/webView1">
    </WebView>
</RelativeLayout>

【讨论】：

谢谢 Juan 但是我在哪里定义 loadURL 方法？就在 web_view 下？

是：web_view.loadUrl(url);并且不要忘记在清单中添加此权限：