Compilation errors with android.widget.MediaController

问题

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);

Gives the error:

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

Next error:

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

Gives the error:

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

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
);

Gives the error:

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

Next error:

addView(v, frameParams);

Gives the error:

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

I would be most thankful for any help.

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

回答1:

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.

来源：https://stackoverflow.com/questions/14775232/compilation-errors-with-android-widget-mediacontroller

标签

android

intellij-idea

mediacontroller