Adding wallpaper sample in ApiDemos.

2009-12-03 13:56:04 -08:00
parent c5a640ee3a
commit b49dd8359d
4 changed files with 129 additions and 0 deletions
--- a/samples/ApiDemos/src/com/example/android/apis/app/SetWallpaperActivity.java
+++ b/samples/ApiDemos/src/com/example/android/apis/app/SetWallpaperActivity.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.apis.app;
+
+// Need the following import to get access to the app resources, since this
+// class is in a sub-package.
+import com.example.android.apis.R;
+
+import java.io.IOException;
+
+import android.app.Activity;
+import android.app.WallpaperManager;
+import android.graphics.Color;
+import android.graphics.PorterDuff;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.view.View;
+import android.view.WindowManager;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.ImageView;
+
+/**
+ * <h3>SetWallpaper Activity</h3>
+ *
+ * <p>This demonstrates the how to write an activity that gets the current system wallpaper,
+ * modifies it and sets the modified bitmap as system wallpaper.</p>
+ */
+public class SetWallpaperActivity extends Activity {
+    final static private int[] mColors =
+            {Color.BLUE, Color.GREEN, Color.RED, Color.LTGRAY, Color.MAGENTA, Color.CYAN,
+                    Color.YELLOW, Color.WHITE};
+
+    /**
+     * Initialization of the Activity after it is first created.  Must at least
+     * call {@link android.app.Activity#setContentView setContentView()} to
+     * describe what is to be displayed in the screen.
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        // Be sure to call the super class.
+        super.onCreate(savedInstanceState);
+        // See res/layout/wallpaper_2.xml for this
+        // view layout definition, which is being set here as
+        // the content of our screen.
+        setContentView(R.layout.wallpaper_2);
+        final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
+        final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
+        final ImageView imageView = (ImageView) findViewById(R.id.imageview);
+        imageView.setDrawingCacheEnabled(true);
+        imageView.setImageDrawable(wallpaperDrawable);
+
+        Button randomize = (Button) findViewById(R.id.randomize);
+        randomize.setOnClickListener(new OnClickListener() {
+            public void onClick(View view) {
+                int mColor = (int) Math.floor(Math.random() * mColors.length);
+                wallpaperDrawable.setColorFilter(mColors[mColor], PorterDuff.Mode.MULTIPLY);
+                imageView.setImageDrawable(wallpaperDrawable);
+                imageView.invalidate();
+            }
+        });
+
+        Button setWallpaper = (Button) findViewById(R.id.setwallpaper);
+        setWallpaper.setOnClickListener(new OnClickListener() {
+            public void onClick(View view) {
+                try {
+                    wallpaperManager.setBitmap(imageView.getDrawingCache());
+                    finish();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        });
+    }
+}
+