0

我目前在我的应用程序底部有这个代码（我已经尝试过其他各种代码）来检测方向变化：

function orientation_changed (){
    if ( is_portrait() )
    {
        alert('ABC');
    }
    else if ( is_landscape() )
    {
        alert('234');
    }
    clearTimeout(window.t);
    delete window.t;
}

window.t = undefined;
window.onorientationchange = function (event)
{
    window.t = setTimeout('orientation_changed();', 250);
}

function is_landscape()
{
    var uagent = navigator.userAgent.toLowerCase();
    if ( uagent.search('ipad') > -1 )
    {
        var r = ( window.orientation == 90 || window.orientation == -90 );
    }
    else
    {
        var r = ( screen.width > screen.height );
    }
    return r;
}

function is_portrait()
{
    var uagent = navigator.userAgent.toLowerCase();
    if ( uagent.search('ipad') > -1 )
    {
        var r = ( window.orientation == 0 || window.orientation == 180 );
    }
    else
    {
        var r = ( screen.width < screen.height );
    }
    return r;
}

但它永远不会着火。我尝试了其他方法来改变平板电脑的方向，但似乎都没有。我的清单如下所示：

<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:windowSoftInputMode="adjustPan"
      package="com.pp.editable" android:versionName="1.1" android:versionCode="5" android:hardwareAccelerated="true">
    <supports-screens
        android:largeScreens="true"
        android:normalScreens="true"
        android:smallScreens="true"
        android:xlargeScreens="true"
        android:resizeable="true"
        android:anyDensity="true"
        />

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.RECEIVE_SMS" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.RECORD_VIDEO"/>
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_CONTACTS" />   
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />   
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />


    <application android:icon="@drawable/icon" android:label="@string/app_name"
        android:hardwareAccelerated="true"
        android:debuggable="true">
        <activity android:name="editabledelights" android:label="@string/app_name"
                android:theme="@android:style/Theme.Black.NoTitleBar"
                android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="17"/>
</manifest>

我正在使用联想 IdeaPad。我正在使用 JQuery mobile 和 Cordova 2.3.0。难道我做错了什么？

4

3 回答 3

3

这是因为您添加了“sceenSize”属性，只需将其删除

于 2013-01-17T09:06:51.553 回答
1

我觉得很笨。在联想上，它仅在系统设置中设置为纵向：P。必须启用方向切换。

于 2013-01-17T14:11:28.050 回答
0

您可能忘记添加事件侦听器来检测方向变化。

// attach the onOrientationChange event listener in your script tag
window.addEventListener( 'onorientationchange', OnOrientationChange, false );

希望有帮助。

于 2013-01-17T08:53:57.050 回答