是否有任何特殊原因需要從Javascript中檢查而不是從Java代碼中檢查?
從Java代碼中,你可以做這樣的事情:
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.adobe.flashplayer", "com.adobe.flashplayer.FlashExpandableFileChooser"));
PackageManager pm = getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(intent, 0);
if (activities != null && activities.size() > 0) {
Toast.makeText(this, "Flash is installed!", Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(this, "Flash not installed!", Toast.LENGTH_LONG).show();
}
在我的HTC Desire效果很好。
如果您想知道我從哪裏取得了com.adobe.flashplayer.FlashExpandableFileChooser類名,我只是將它從Flash Player的AndroidManifest.xml中取出。
它看起來像這樣:
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
android:versionCode="101106016"
android:versionName="10.1.106.16"
package="com.adobe.flashplayer"
>
<application
android:label="Adobe Flash Player 10.1"
android:icon="@7F020000"
>
<activity
android:name="com.adobe.flashplayer.FlashExpandableFileChooser"
>
<intent-filter
>
<action
android:name="android.intent.action.MAIN"
>
</action>
<category
android:name="android.intent.category.DEFAULT"
>
</category>
<category
android:name="FlashExpandableFileChooser"
>
</category>
</intent-filter>
</activity>
<service
android:name="com.adobe.flashplayer.FlashPaintSurface"
>
<intent-filter
>
<action
android:name="android.webkit.PLUGIN"
>
</action>
</intent-filter>
<meta-data
android:name="type"
android:value="native"
>
</meta-data>
</service>
</application>
<uses-permission
android:name="android.webkit.permission.PLUGIN"
>
</uses-permission>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="5"
android:maxSdkVersion="10"
>
</uses-sdk>
</manifest>
您可以按照如何從JavaScript代碼調用此代碼的指令here。 具體看setJavaScriptInterface方法
要直接從JavaScript的檢測,使用此片段:
flashInstalled = false;
if (navigator.plugins && navigator.plugins.length) {
for (n = 0; n < navigator.plugins.length; n++) {
if (navigator.plugins[n].name.indexOf('Shockwave Flash') != -1) {
flashInstalled = true;
break;
}
}
如果你有更新,請編輯成你原來的問題。這次我冒着爲你做這件事的自由。謝謝。 – Sampson 2011-02-07 14:20:27