Initial Contribution

samples/ApiDemos/src/com/example/android/apis/ApiDemos.java

@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2007 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;
+
+import android.app.ListActivity;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ListView;
+import android.widget.SimpleAdapter;
+
+import java.text.Collator;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class ApiDemos extends ListActivity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        
+        Intent intent = getIntent();
+        String path = intent.getStringExtra("com.example.android.apis.Path");
+        
+        if (path == null) {
+            path = "";
+        }
+
+        setListAdapter(new SimpleAdapter(this, getData(path),
+                android.R.layout.simple_list_item_1, new String[] { "title" },
+                new int[] { android.R.id.text1 }));
+        getListView().setTextFilterEnabled(true);
+    }
+
+    protected List getData(String prefix) {
+        List<Map> myData = new ArrayList<Map>();
+
+        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
+        mainIntent.addCategory(Intent.CATEGORY_SAMPLE_CODE);
+
+        PackageManager pm = getPackageManager();
+        List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0);
+
+        if (null == list)
+            return myData;
+
+        String[] prefixPath;
+        
+        if (prefix.equals("")) {
+            prefixPath = null;
+        } else {
+            prefixPath = prefix.split("/");
+        }
+        
+        int len = list.size();
+        
+        Map<String, Boolean> entries = new HashMap<String, Boolean>();
+
+        for (int i = 0; i < len; i++) {
+            ResolveInfo info = list.get(i);
+            CharSequence labelSeq = info.loadLabel(pm);
+            String label = labelSeq != null
+                    ? labelSeq.toString()
+                    : info.activityInfo.name;
+            
+            if (prefix.length() == 0 || label.startsWith(prefix)) {
+                
+                String[] labelPath = label.split("/");
+
+                String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length];
+
+                if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) {
+                    addItem(myData, nextLabel, activityIntent(
+                            info.activityInfo.applicationInfo.packageName,
+                            info.activityInfo.name));
+                } else {
+                    if (entries.get(nextLabel) == null) {
+                        addItem(myData, nextLabel, browseIntent(prefix.equals("") ? nextLabel : prefix + "/" + nextLabel));
+                        entries.put(nextLabel, true);
+                    }
+                }
+            }
+        }
+
+        Collections.sort(myData, sDisplayNameComparator);
+        
+        return myData;
+    }
+
+    private final static Comparator<Map> sDisplayNameComparator = new Comparator<Map>() {
+        private final Collator   collator = Collator.getInstance();
+
+        public int compare(Map map1, Map map2) {
+            return collator.compare(map1.get("title"), map2.get("title"));
+        }
+    };
+
+    protected Intent activityIntent(String pkg, String componentName) {
+        Intent result = new Intent();
+        result.setClassName(pkg, componentName);
+        return result;
+    }
+    
+    protected Intent browseIntent(String path) {
+        Intent result = new Intent();
+        result.setClass(this, ApiDemos.class);
+        result.putExtra("com.example.android.apis.Path", path);
+        return result;
+    }
+
+    protected void addItem(List<Map> data, String name, Intent intent) {
+        Map<String, Object> temp = new HashMap<String, Object>();
+        temp.put("title", name);
+        temp.put("intent", intent);
+        data.add(temp);
+    }
+
+    @Override
+    protected void onListItemClick(ListView l, View v, int position, long id) {
+        Map map = (Map) l.getItemAtPosition(position);
+
+        Intent intent = (Intent) map.get("intent");
+        startActivity(intent);
+    }
+
+}