android.widget.MediaController的编译错误 [英] Compilation errors with android.widget.MediaController

问题描述

我正在尝试自定义MediaController.这样做时，我偶然发现了一个问题.我的稍微修改的版本和MediaController的未修改源都无法使用intelliJ IDEA进行编译.编译未修改的源代码时，出现以下错误:

I'm trying to customize the MediaController. While doing so, I've stumbled upon a problem. Both my slightly modified version and the unmodified source of MediaController won't compile with intelliJ IDEA. When compiling the unmodified source code I get these errors:

mWindow = PolicyManager.makeNewWindow(mContext);

给出错误:

cannot find symbol
symbol : variable PolicyManager
location: class android.widget.MediaController

下一个错误:

if (event.getRepeatCount() == 0 && event.isDown() && (
            keyCode ==  KeyEvent.KEYCODE_HEADSETHOOK ||
                    keyCode ==  KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE ||
                    keyCode ==  KeyEvent.KEYCODE_SPACE))

给出错误:

Cannot find symbol
symbol : method isDown()
location: android.view.KeyEvent

我修改后的代码还给出了以上错误，但又给出了两个错误:

My modified code also gives the above errors but also two more:

FrameLayout.LayoutParams = new FrameLayout.LayoutParams(
      ViewGroup.LayoutParams.FILL_PARENT,
      ViewGroup.LayoutParams.FILL_PARENT
);

给出错误:

cannot find symbol
symbol : variable LayoutParams
location: class android.widget.FrameLAyout

下一个错误:

addView(v, frameParams);

给出错误:

cannot find symbol
symbol : variable frameParams
location: class ........

我将非常感谢您的帮助.

I would be most thankful for any help.

我从GrepCode获取了源代码，

I got the source code from GrepCode, http://grepcode.com/file_/repository.grepcode.com/java/ext/com.google.android/android/2.0_r1/android/widget/MediaController.java/?v=source

推荐答案

MediaController要求访问不属于Android SDK的类和方法，因此不能将其构建为常规SDK应用程序的一部分.

MediaController requires access to classes and methods that are not part of the Android SDK, and therefore cannot be built as part of a regular SDK application.

这篇关于android.widget.MediaController的编译错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！