Hardware acceleration flag

问题

I'm building an app which will run from Android version 2.2 (Froyo) onwards. I have already built an app with 2.2 for playing videos and in the same app I want to run on Android version 3 (Honeycomb).

And here my problem starts with hardware_ accelerated flag. This flag is available from Honeycomb 3 onwards, but not below Honeycomb. I want to ship one common app with Froyo, but as I'm trying my app in Honeycomb, video is not shown. It's clearly because of the hardware_ accelerated flag. I can release two builds, but I just want to give one try. Can I avoid that?

My problem is I want to ship the app with Froyo, but for hardware_accelerated flag, it has a reference, not a manifest or in the programmatically coding since it's Froyo. I'm using webview from where the videos will be played.

回答1:

Tried to set only the window in hardware accelerated mode:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
    getWindow().setFlags(
        WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
        WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);
}

And your manifest shoud set SDK compatibility to:

<uses-sdk android:minSdkVersion="8"
      android:targetSdkVersion="11" />

And add the android-support-v4.jar lib to your project.

However, your problem might be somewhere else.

回答2:

I did the trick the other way around. I built an app in Honeycomb (Android 3.0) itself. And allowed to support Froyo (Android 2.2) in the manifest.

来源：https://stackoverflow.com/questions/16235637/hardware-acceleration-flag