我正在使用Android Studio开发。在主活动中,我使用了WebView。当我运行项目时,它会显示错误信息:"The webpage at http://www.google.com could not be loaded because: net::ERR_CACHE_MISS"。 以下是我的代码: 在清单文件中:
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".defaultActivity"
android:label="@string/app_name"
>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<uses-permission android:name="android.permission.android.permission.ACCESS_NETWORK_STATE"/>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
在 Activity 中:
WebView _taskOrganizerView = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_default);
_taskOrganizerView = (WebView)findViewById(R.id.wvTskOrg);
_taskOrganizerView.getSettings().setJavaScriptEnabled(true);
if (Build.VERSION.SDK_INT >= 19) {
_taskOrganizerView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
}
_taskOrganizerView.loadUrl("http://www.google.com");
_taskOrganizerView.setWebViewClient(new WebViewClient() );
}
在布局中:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".defaultActivity">
<WebView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/wvTskOrg"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
<uses-permission android:name="android.permission.INTERNET"/>
。 - Haseeb Zulfiqar