webview和 内置浏览器的调用
http://blog.csdn.net/hudashi/article/details/8176298/
一、
启动android默认浏览器
在Android程序中我们可以通过发送隐式Intent来启动系统默认的浏览器。如果手机本身安装了多个浏览器而又没有设置默认浏览器的话，系统将让用户选择使用哪个浏览器来打开连接。关于Intent的更多内容请参考《
常用Intent》
示例1
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
Uri content_url = Uri.parse("http://www.163.com");
intent.setData(content_url);
startActivity(intent);
这样子，android就可以调用起手机默认的浏览器访问。
二、启动指定浏览器
在Android程序中我们可以通过发送显式Intent来启动指定的浏览器。
启动Android原生浏览器
示例2
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
Uri content_url = Uri.parse("http://www.163.com");
intent.setData(content_url);
intent.setClassName("com.android.browser","com.android.browser.BrowserActivity");
startActivity(intent);
只要修改以intent.setClassName("com.android.browser","com.android.browser.BrowserActivity");
中相应的应用程序packagename 和要启动的activity即可启动其他浏览器来
uc浏览器"："com.uc.browser", "com.uc.browser.ActivityUpdate“
opera浏览器："com.opera.mini.android", "com.opera.mini.android.Browser"
qq浏览器："com.tencent.mtt", "com.tencent.mtt.MainActivity"
三、使用浏览器打开本地html文件
打开本地的html文件的时候，一定要指定某个浏览器，而不能采用方式一来浏览。
示例3
//如果是放到本程序的文件 可以先复制到/data/data/程序报名/src下 再解压到sdcard上
//不能用file://android_assert寻找文件路径，因为到了 浏览器程序 浏览器程序 没有 android_assert路径下的文件
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
Uri content_url = Uri.parse("file:///sdcard/robin.hu/help.html");
intent.setData(content_url);
intent.setClassName("com.android.browser","com.android.browser.BrowserActivity");
startActivity(intent);
虽然网上很多文章说即使使用浏览器打开本地的html文件的时，文件路径不支持"files:"，不应该使用
Uri.parse("file:///sdcard/robin.hu/help.html");
这种形式而是应该使用
Uri content_url = Uri.parse("content://com.android.htmlfileprovider/sdcard/robin.hu/help.html");
但是经过在HTC G10(Android2.3.5),Lenovo P770(Android4.0以上)测试，实际上只有
Uri.parse("file:///sdcard/robin.hu/help.html");
这种形式能很好的工作。
Uri content_url = Uri.parse("content://com.android.htmlfileprovider/sdcard/robin.hu/help.html");
这种形式反而不能很好的工作
四、对使用浏览器打开网页的封装
以下是对使用浏览器打开网页的一些封装
static void startBrower(Context context,String uri)
{
startBrower(context,Uri.parse(uri));
}
static void startBrower(Context context,Uri uri)
{
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
/*其实可以不用添加该Category*/
intent.addCategory("android.intent.category.BROWSABLE");
intent.setData(uri);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
/*如果想用浏览器打开本地html文件的话，则只能通过显式intent启动浏览器*/
boolean explicitMode=false;
String scheme=uri.getScheme();
if(scheme!=null&&scheme.startsWith("file")) {
explicitMode=true;
}
if(explicitMode) {
intent.setClassName("com.android.browser", "com.android.browser.BrowserActivity");
} else {
intent.addCategory("android.intent.category.BROWSABLE");
}
context.startActivity(intent);
}
static void startBrower(Context context,String uri,String packageName, String className)
{
startBrower(context,Uri.parse(uri),packageName,className);
}
static void startBrower(Context context,Uri uri,String packageName, String className)
{
Intent intent = new Intent();
intent.setAction("android.intent.action.VIEW");
intent.setData(uri);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setClassName(packageName,className);
context.startActivity(intent);
}
五、Android原生浏览器的AndroidManifest.xml
以下是Android 4.0原生浏览器的AndroidManifest.xml文件
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.android.browser">
<original-package android:name="com.android.browser" />
<permission android:name="com.android.browser.permission.PRELOAD"
android:label="@string/permission_preload_label"
android:protectionLevel="signatureOrSystem" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.GET_ACCOUNTS"/>
<uses-permission android:name="android.permission.USE_CREDENTIALS"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.NFC" />
<uses-permission android:name="android.permission.SEND_DOWNLOAD_COMPLETED_INTENTS" />
<uses-permission android:name="android.permission.SET_WALLPAPER" />
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
<uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS"/>
<uses-permission android:name="com.android.browser.permission.WRITE_HISTORY_BOOKMARKS"/>
<uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT"/>
<application android:name="Browser"
android:label="@string/application_name"
android:icon="@mipmap/ic_launcher_browser"
android:backupAgent=".BrowserBackupAgent"
android:hardwareAccelerated="true"
android:taskAffinity="android.task.browser" >
<provider android:name=".provider.BrowserProvider2"
android:authorities="com.android.browser;browser"
android:multiprocess="true"
android:readPermission="com.android.browser.permission.READ_HISTORY_BOOKMARKS"
android:writePermission="com.android.browser.permission.WRITE_HISTORY_BOOKMARKS">
<path-permission android:path="/bookmarks/search_suggest_query"
android:readPermission="android.permission.GLOBAL_SEARCH" />
</provider>
<activity android:name="BrowserActivity"
android:label="@string/application_name"
android:launchMode="singleTask"
android:alwaysRetainTaskState="true"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize"
android:theme="@style/BrowserTheme"
android:windowSoftInputMode="adjustResize" >
<intent-filter>
<action android:name="android.speech.action.VOICE_SEARCH_RESULTS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- For these schemes were not particular MIME type has been
supplied, we are a good candidate. -->
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="http" />
<data android:scheme="https" />
<data android:scheme="about" />
<data android:scheme="javascript" />
</intent-filter>
<!-- For these schemes where any of these particular MIME types
have been supplied, we are a good candidate. -->
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="http" />
<data android:scheme="https" />
<data android:scheme="inline" />
<data android:mimeType="text/html"/>
<data android:mimeType="text/plain"/>
<data android:mimeType="application/xhtml+xml"/>
<data android:mimeType="application/vnd.wap.xhtml+xml"/>
</intent-filter>
<!-- For viewing saved web archives. -->
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="http" />
<data android:scheme="https" />
<data android:scheme="file" />
<data android:mimeType="application/x-webarchive-xml"/>
</intent-filter>
<!-- Accept inbound NFC URLs at a low priority -->
<intent-filter android:priority="-101">
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="http" />
<data android:scheme="https" />
</intent-filter>
<!-- We are also the main entry point of the browser. -->
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.BROWSABLE" />
</intent-filter>
<!-- The maps app is a much better experience, so it's not
worth having this at all... especially for a demo!
<intent-filter android:label="Map In Browser">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.item/postal-address" />
</intent-filter>
-->
<intent-filter>
<action android:name="android.intent.action.WEB_SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="" />
<data android:scheme="http" />
<data android:scheme="https" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.MEDIA_SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
<activity android:name="ShortcutActivity"
android:theme="@style/ShortcutTheme"
android:label="@string/shortcut_bookmark"
android:icon="@mipmap/ic_launcher_shortcut_browser_bookmark">
<intent-filter>
<action android:name="android.intent.action.CREATE_SHORTCUT" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="BrowserPreferencesPage" android:label="@string/menu_preferences">
<intent-filter>
<action android:name="android.intent.action.MANAGE_NETWORK_USAGE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name="BookmarkSearch"
android:label="@string/bookmarks_search"
android:stateNotNeeded="true"
android:theme="@android:style/Theme.NoDisplay"
android:excludeFromRecents="true">
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/bookmarks_searchable" />
</activity>
<activity android:name="AddBookmarkPage" android:label="Save bookmark"
android:theme="@style/DialogWhenLarge"
android:configChanges="orientation|keyboardHidden|screenSize">
<intent-filter>
<action android:name="android.intent.action.INSERT" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="vnd.android.cursor.dir/bookmark"/>
</intent-filter>
</activity>
<activity android:name="ComboViewActivity">
</activity>
<!-- Bookmark thumbnail homescreen widget -->
<receiver
android:name=".widget.BookmarkThumbnailWidgetProvider"
android:label="@string/bookmarks">
<intent-filter>
<action
android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action
android:name="com.android.browser.BOOKMARK_APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/bookmarkthumbnailwidget_info" />
</receiver>
<service
android:name=".widget.BookmarkThumbnailWidgetService"
android:permission="android.permission.BIND_REMOTEVIEWS"
android:exported="false" />
<receiver
android:name=".widget.BookmarkWidgetProxy"
android:exported="false" />
<activity android:name=".widget.BookmarkWidgetConfigure"
android:theme="@android:style/Theme.Holo.DialogWhenLarge">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
</intent-filter>
</activity>
<!-- Makes .BrowserActivity the search target for any activity in Browser -->
<meta-data android:name="android.app.default_searchable" android:value=".BrowserActivity" />
<!-- Application code for RLZ tracking. RLZ assigns non-unique, non-personally identifiable
tracking labels to client products; these labels sometimes appear in Google search
queries. See http://code.google.com/p/rlz for more info.
This value signifies to the RLZ client that this application uses RLZ tracking. -->
<meta-data android:name="com.google.android.partnersetup.RLZ_ACCESS_POINT"
android:value="@string/rlz_access_point" />
<receiver android:name=".OpenDownloadReceiver">
<intent-filter>
<action android:name="android.intent.action.DOWNLOAD_NOTIFICATION_CLICKED"/>
</intent-filter>
</receiver>
<!-- For custom home pages (like most visited) -->
<provider
android:name=".homepages.HomeProvider"
android:authorities="com.android.browser.home"
android:readPermission="com.android.browser.permission.READ_HISTORY_BOOKMARKS"
android:exported="false" />
<receiver android:name=".AccountsChangedReceiver">
<intent-filter>
<action android:name="android.accounts.LOGIN_ACCOUNTS_CHANGED" />
</intent-filter>
</receiver>
<receiver android:name=".PreloadRequestReceiver"
android:permission="com.android.browser.permission.PRELOAD" >
<intent-filter>
<action android:name="android.intent.action.PRELOAD"/>
<data android:scheme="http" />
</intent-filter>
</receiver>
<provider android:name=".provider.SnapshotProvider"
android:authorities="com.android.browser.snapshots"
android:exported="false" />
</application>
</manifest>
结束