Update RandomMusicPlayer sample for new RemoteControlClient APIs, also add media button support

Change-Id: Ia6ad08dd0ec1e67f1cffa2d6cfca2120ee0a96c7
2011-09-30 18:02:10 -07:00
parent 8fbf284cc8
commit 5986e12034
61 changed files with 1075 additions and 523 deletions
--- a/samples/RandomMusicPlayer/src/com/example/android/musicplayer/MediaButtonHelper.java
+++ b/samples/RandomMusicPlayer/src/com/example/android/musicplayer/MediaButtonHelper.java
@@ -0,0 +1,85 @@
+package com.example.android.musicplayer;
+
+import android.content.ComponentName;
+import android.media.AudioManager;
+import android.util.Log;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * Class that assists with handling new media button APIs available in API level 8.
+ */
+public class MediaButtonHelper {
+    // Backwards compatibility code (methods available as of API Level 8)
+    private static final String TAG = "MediaButtonHelper";
+
+    static {
+        initializeStaticCompatMethods();
+    }
+
+    static Method sMethodRegisterMediaButtonEventReceiver;
+    static Method sMethodUnregisterMediaButtonEventReceiver;
+
+    static void initializeStaticCompatMethods() {
+        try {
+            sMethodRegisterMediaButtonEventReceiver = AudioManager.class.getMethod(
+                    "registerMediaButtonEventReceiver",
+                    new Class[] { ComponentName.class });
+            sMethodUnregisterMediaButtonEventReceiver = AudioManager.class.getMethod(
+                    "unregisterMediaButtonEventReceiver",
+                    new Class[] { ComponentName.class });
+        } catch (NoSuchMethodException e) {
+            // Silently fail when running on an OS before API level 8.
+        }
+    }
+
+    public static void registerMediaButtonEventReceiverCompat(AudioManager audioManager,
+            ComponentName receiver) {
+        if (sMethodRegisterMediaButtonEventReceiver == null)
+            return;
+
+        try {
+            sMethodRegisterMediaButtonEventReceiver.invoke(audioManager, receiver);
+        } catch (InvocationTargetException e) {
+            // Unpack original exception when possible
+            Throwable cause = e.getCause();
+            if (cause instanceof RuntimeException) {
+                throw (RuntimeException) cause;
+            } else if (cause instanceof Error) {
+                throw (Error) cause;
+            } else {
+                // Unexpected checked exception; wrap and re-throw
+                throw new RuntimeException(e);
+            }
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "IllegalAccessException invoking registerMediaButtonEventReceiver.");
+            e.printStackTrace();
+        }
+    }
+
+    @SuppressWarnings("unused")
+    public static void unregisterMediaButtonEventReceiverCompat(AudioManager audioManager,
+            ComponentName receiver) {
+        if (sMethodUnregisterMediaButtonEventReceiver == null)
+            return;
+
+        try {
+            sMethodUnregisterMediaButtonEventReceiver.invoke(audioManager, receiver);
+        } catch (InvocationTargetException e) {
+            // Unpack original exception when possible
+            Throwable cause = e.getCause();
+            if (cause instanceof RuntimeException) {
+                throw (RuntimeException) cause;
+            } else if (cause instanceof Error) {
+                throw (Error) cause;
+            } else {
+                // Unexpected checked exception; wrap and re-throw
+                throw new RuntimeException(e);
+            }
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "IllegalAccessException invoking unregisterMediaButtonEventReceiver.");
+            e.printStackTrace();
+        }
+    }
+}