Part of the volume refactoring, missed in an earlier commit.

src/com/danga/squeezer/VolumePanel.java

@@ -0,0 +1,94 @@
+/**
+ * Implement a custom toast view that's modelled on the one in
+ * android.view.VolumePanel (but which is not public).
+ * 
+ */
+package com.danga.squeezer;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.Message;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+
+public class VolumePanel extends Handler {
+	private static final int MSG_VOLUME_CHANGED = 0;
+    private static final int MSG_FREE_RESOURCES = 1;
+
+	protected Context mContext;
+
+    private final Toast mToast;
+    private final View mView;
+    private final TextView mMessage;
+    private final TextView mAdditionalMessage;
+    private final ImageView mLargeStreamIcon;
+    private final ProgressBar mLevel;
+
+    public VolumePanel(Context context) {
+    	mContext = context;
+        mToast = new Toast(context);
+
+        LayoutInflater inflater = (LayoutInflater) context
+        		.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        mView = inflater.inflate(R.layout.volume_adjust, null);
+        mMessage = (TextView) mView.findViewById(R.id.message);
+    	mAdditionalMessage = (TextView) mView.findViewById(R.id.additional_message);
+    	mLevel = (ProgressBar) mView.findViewById(R.id.level);
+    	mLargeStreamIcon = (ImageView) mView.findViewById(R.id.ringer_stream_icon);
+    }
+
+    public void postVolumeChanged(int newVolume, String additionalMessage) {
+        if (hasMessages(MSG_VOLUME_CHANGED)) return;
+        removeMessages(MSG_FREE_RESOURCES);
+        obtainMessage(MSG_VOLUME_CHANGED, newVolume, 0, additionalMessage).sendToTarget();  	
+    }
+
+    protected void onVolumeChanged(int newVolume, String additionalMessage) {
+    	onShowVolumeChanged(newVolume, additionalMessage);
+    }
+
+    protected void onShowVolumeChanged(int newVolume, String additionalMessage) {
+    	mLevel.setMax(100);
+    	mLevel.setProgress(newVolume);
+
+    	mMessage.setText(mContext.getText(R.string.app_name) + " volume");
+    	mAdditionalMessage.setText(additionalMessage);
+
+		mLargeStreamIcon.setImageResource(newVolume == 0
+				? R.drawable.ic_volume_off
+				: R.drawable.ic_volume);
+
+    	mToast.setView(mView);
+    	mToast.setDuration(Toast.LENGTH_SHORT);
+    	mToast.setGravity(Gravity.TOP, 0, 0);
+    	mToast.show();
+    }
+
+    protected void onFreeResources() {
+        // We'll keep the views, just ditch the cached drawable and hence
+        // bitmaps
+        mLargeStreamIcon.setImageDrawable(null);
+    }
+
+    @Override
+    public void handleMessage(Message msg) {
+        switch (msg.what) {
+
+            case MSG_VOLUME_CHANGED: {
+                onVolumeChanged(msg.arg1, (String) msg.obj);
+                break;
+            }
+
+            case MSG_FREE_RESOURCES: {
+                onFreeResources();
+                break;
+            }
+        }
+    }
+}