1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.contacts.widget; 18 19 import com.android.contacts.R; 20 21 import android.app.ListActivity; 22 import android.content.Context; 23 import android.database.Cursor; 24 import android.database.MatrixCursor; 25 import android.os.Bundle; 26 import android.os.Handler; 27 import android.view.LayoutInflater; 28 import android.view.View; 29 import android.view.ViewGroup; 30 import android.widget.TextView; 31 32 /** 33 * An activity that demonstrates various use cases for the {@link PinnedHeaderListView}. 34 * If we decide to move PinnedHeaderListView to the framework, this class could go 35 * to API demos. 36 */ 37 public class PinnedHeaderListDemoActivity extends ListActivity { 38 39 public final static class TestPinnedHeaderListAdapter extends PinnedHeaderListAdapter { 40 TestPinnedHeaderListAdapter(Context context)41 public TestPinnedHeaderListAdapter(Context context) { 42 super(context); 43 setPinnedPartitionHeadersEnabled(true); 44 } 45 46 private String[] mHeaders; 47 private int mPinnedHeaderCount; 48 setHeaders(String[] headers)49 public void setHeaders(String[] headers) { 50 this.mHeaders = headers; 51 } 52 53 @Override newHeaderView(Context context, int partition, Cursor cursor, ViewGroup parent)54 protected View newHeaderView(Context context, int partition, Cursor cursor, 55 ViewGroup parent) { 56 LayoutInflater inflater = LayoutInflater.from(context); 57 return inflater.inflate(R.layout.list_section, null); 58 } 59 60 @Override bindHeaderView(View view, int parition, Cursor cursor)61 protected void bindHeaderView(View view, int parition, Cursor cursor) { 62 TextView headerText = (TextView)view.findViewById(R.id.header_text); 63 headerText.setText(mHeaders[parition]); 64 } 65 66 @Override newView(Context context, int partition, Cursor cursor, int position, ViewGroup parent)67 protected View newView(Context context, int partition, Cursor cursor, int position, 68 ViewGroup parent) { 69 LayoutInflater inflater = LayoutInflater.from(context); 70 return inflater.inflate(android.R.layout.simple_list_item_1, null); 71 } 72 73 @Override bindView(View v, int partition, Cursor cursor, int position)74 protected void bindView(View v, int partition, Cursor cursor, int position) { 75 TextView text = (TextView)v.findViewById(android.R.id.text1); 76 text.setText(cursor.getString(1)); 77 } 78 79 @Override getPinnedHeaderView(int viewIndex, View convertView, ViewGroup parent)80 public View getPinnedHeaderView(int viewIndex, View convertView, ViewGroup parent) { 81 LayoutInflater inflater = LayoutInflater.from(getContext()); 82 View view = inflater.inflate(R.layout.list_section, parent, false); 83 view.setFocusable(false); 84 view.setEnabled(false); 85 bindHeaderView(view, viewIndex, null); 86 return view; 87 } 88 89 @Override getPinnedHeaderCount()90 public int getPinnedHeaderCount() { 91 return mPinnedHeaderCount; 92 } 93 } 94 95 private Handler mHandler = new Handler(); 96 97 @Override onCreate(Bundle bundle)98 protected void onCreate(Bundle bundle) { 99 super.onCreate(bundle); 100 101 setContentView(R.layout.pinned_header_list_demo); 102 103 final TestPinnedHeaderListAdapter adapter = new TestPinnedHeaderListAdapter(this); 104 105 Bundle extras = getIntent().getExtras(); 106 int[] counts = extras.getIntArray("counts"); 107 String[] names = extras.getStringArray("names"); 108 boolean[] showIfEmpty = extras.getBooleanArray("showIfEmpty"); 109 boolean[] hasHeader = extras.getBooleanArray("headers"); 110 int[] delays = extras.getIntArray("delays"); 111 112 if (counts == null || names == null || showIfEmpty == null || delays == null) { 113 throw new IllegalArgumentException("Missing required extras"); 114 } 115 116 adapter.setHeaders(names); 117 for (int i = 0; i < counts.length; i++) { 118 adapter.addPartition(showIfEmpty[i], names[i] != null); 119 adapter.mPinnedHeaderCount = names.length; 120 } 121 setListAdapter(adapter); 122 for (int i = 0; i < counts.length; i++) { 123 final int sectionId = i; 124 final Cursor cursor = makeCursor(names[i], counts[i]); 125 mHandler.postDelayed(new Runnable() { 126 127 public void run() { 128 adapter.changeCursor(sectionId, cursor); 129 130 } 131 }, delays[i]); 132 } 133 } 134 makeCursor(String name, int count)135 private Cursor makeCursor(String name, int count) { 136 MatrixCursor cursor = new MatrixCursor(new String[]{"_id", name}); 137 for (int i = 0; i < count; i++) { 138 cursor.addRow(new Object[]{i, name + "[" + i + "]"}); 139 } 140 return cursor; 141 } 142 } 143