Android2.2 Luncher2扩展(仿Ipad DockBar、HTC预览图、批量添加快捷方式、启用3D效果等)
1、给Launcher添加DockBar
2、修改Launcher长安AllApps的预览图
（1、2两点请参考何明桂何兄的博客，地址分别为：http://blog.csdn.net/hmg25/article/details/6289438 http://blog.csdn.net/hmg25/article/details/6289725）DockBar的实现，何兄只提供了竖屏，我在其博客的评论中看到不少人说是要实现横屏，下面我将我的实现帖出来。主要是修改layout-land/launcher.xml文件，以下是这个文件的全部代码：
<com.android.launcherex.DragLayer
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:launcher="http://schemas.android.com/apk/res/com.android.launcher"
android:id="@+id/drag_layer"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include layout="@layout/all_apps" />
<!-- The workspace contains 3 screens of cells -->
<com.android.launcherex.Workspace
android:id="@+id/workspace"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="horizontal"
android:fadeScrollbars="true"
launcher:defaultScreen="2">
<include android:id="@+id/cell1" layout="@layout/workspace_screen" />
<include android:id="@+id/cell2" layout="@layout/workspace_screen" />
<include android:id="@+id/cell3" layout="@layout/workspace_screen" />
<include android:id="@+id/cell4" layout="@layout/workspace_screen" />
<include android:id="@+id/cell5" layout="@layout/workspace_screen" />
</com.android.launcherex.Workspace>
<RelativeLayout
android:id="@+id/dock_layout"
android:layout_gravity="bottom|left"
android:layout_width="match_parent"
android:layout_height="95dip"
>
<com.android.launcherex.ClippedImageView
android:id="@+id/previous_screen"
android:layout_width="93dip"
android:layout_height="@dimen/button_bar_height"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="6dip"
android:scaleType="center"
android:src="@drawable/home_arrows_left"
android:onClick="previousScreen"
launcher:ignoreZone="56dip"
android:focusable="true"
android:clickable="true" />
<com.android.launcherex.ClippedImageView
android:id="@+id/next_screen"
android:layout_width="93dip"
android:layout_height="@dimen/button_bar_height"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_marginRight="6dip"
android:scaleType="center"
android:src="@drawable/home_arrows_right"
android:onClick="nextScreen"
launcher:ignoreZone="-56dip"
android:focusable="true"
android:clickable="true" />
<com.android.launcherex.DeleteZone
android:id="@+id/delete_zone"
android:layout_width="@dimen/delete_zone_size"
android:layout_height="@dimen/delete_zone_size"
android:paddingLeft="@dimen/delete_zone_padding"
android:layout_marginBottom="@dimen/dock_bar_height"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:scaleType="center"
android:src="@drawable/delete_zone_selector"
android:visibility="invisible"
launcher:direction="vertical"
/>
<RelativeLayout
android:id="@+id/all_apps_button_cluster"
android:layout_height="fill_parent"
android:layout_width="@dimen/button_bar_height_portrait"
android:layout_gravity="bottom|center_vertical"
android:layout_marginBottom="@dimen/half_status_bar_height"
>
<!-- <com.android.launcherex.HandleView
style="@style/HotseatButton"
android:id="@+id/all_apps_button"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
android:src="@drawable/all_apps_button"
launcher:direction="vertical"
/>-->
<!-- android:layout_below="@id/all_apps_button" -->
<!-- android:layout_above="@id/all_apps_button" -->
<ImageView
android:id="@+id/hotseat_left"
style="@style/HotseatButton.Left"
android:src="@drawable/hotseat_phone"
android:visibility="gone"
android:onClick="launchHotSeat"
/>
<ImageView
android:id="@+id/hotseat_right"
style="@style/HotseatButton.Right"
android:visibility="gone"
android:src="@drawable/hotseat_browser"
android:onClick="launchHotSeat"
/>
</RelativeLayout>
<com.android.launcherex.DockBar
android:id="@+id/dockbar"
android:layout_width="fill_parent"
android:layout_height="@dimen/button_bar_height"
android:background="@drawable/dock_bg"
android:layout_alignParentBottom="true"
launcher:direction="horizontal">
<HorizontalScrollView
android:id="@+id/dock_scroll_view"
android:scrollbars="none"
android:fadingEdge="none"
android:saveEnabled="false"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="horizontal"
android:id="@+id/dock_item_holder"
android:saveEnabled="false"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.android.launcherex.HandleView
android:id="@+id/all_apps_button"
android:layout_centerVertical="true"
android:src="@drawable/all_apps_button"
launcher:direction="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:focusable="true"
android:clickable="true" />
</LinearLayout>
</HorizontalScrollView>
</com.android.launcherex.DockBar>
</RelativeLayout>
</com.android.launcherex.DragLayer>
3、启用3D效果
3D效果启动很简单，只需要将all_apps.xml文件下的
<include layout="@layout/all_apps_2d" />改为：
<include layout="@layout/all_apps_3d" />
即可。当然你可能还需要对图标做一些调整。我主要是调整了一下几个参数：
public static final int ICON_WIDTH_PX = 64;
public static final int ICON_TEXTURE_WIDTH_PX = 74;
public static final int SELECTION_TEXTURE_WIDTH_PX = 74 + 20;
public static final int ICON_HEIGHT_PX = 64;
public static final int ICON_TEXTURE_HEIGHT_PX = 74;
public static final int SELECTION_TEXTURE_HEIGHT_PX = 74 + 20;
4、替换应用程序图标
主要是在IconCache中做了以下修改。修改的只是Launcher上显示的图标，长按Home键显示最近开启的应用时，图标还是原先默认的图标，这些就自己去改吧。private CacheEntry cacheLocked(ComponentName componentName, ResolveInfo info) {
CacheEntry entry = mCache.get(componentName);
if (entry == null) {
entry = new CacheEntry();
mCache.put(componentName, entry);
entry.title = info.loadLabel(mPackageManager).toString();
if (entry.title == null) {
entry.title = info.activityInfo.name;
}
// entry.icon = Utilities.createIconBitmap(info.activityInfo.loadIcon(mPackageManager), mContext);
entry.icon = suBIcon(info);
}
return entry;
}
/**
* Replace the default Launcher icon
* @param info
* @return
*/
private Bitmap suBIcon(ResolveInfo info){
Drawable drawable = null;
String pname = info.activityInfo.packageName;
if(pname.equals(Constant.PACKAGE_VIDEOPLAYER)){
drawable = mResources.getDrawable(R.drawable.lu_videoplayer);
}else if(pname.equals(Constant.PACKAGENAME_BROWSER)){
drawable = mResources.getDrawable(R.drawable.lu_browser);
}else if(pname.equals(Constant.PACKAGE_CALCULATOR)){
drawable = mResources.getDrawable(R.drawable.lu_calculator2);
}else if(pname.equals(Constant.PACKAGE_CALENDAR)){
drawable = mResources.getDrawable(R.drawable.lu_calendar);
}else if(pname.equals(Constant.PACKAGE_CAMERA)){
drawable = mResources.getDrawable(R.drawable.lu_camera);
}else if(pname.equals(Constant.PACKAGE_CLOCK)){
drawable = mResources.getDrawable(R.drawable.lu_alarmclock);
}else if(pname.equals(Constant.PACKAGE_EMAIL)){
drawable = mResources.getDrawable(R.drawable.lu_email);
}else if(pname.equals(Constant.PACKAGE_GALLERY)){
drawable = mResources.getDrawable(R.drawable.lu_gallery);
}else if(pname.equals(Constant.PACKAGE_MUSIC)){
drawable = mResources.getDrawable(R.drawable.lu_music);
}else if(pname.equals(Constant.PACKAGE_SETTINGS)){
drawable = mResources.getDrawable(R.drawable.lu_settings);
}
if(drawable!=null){
return Utilities.createIconBitmap(drawable, mContext);
}else{
return Utilities.createIconBitmap(info.activityInfo.loadIcon(mPackageManager), mContext);
}
}
5、批量添加快捷方式
操作：长按桌面 -- Add to Home Screen点击Applications即显示所有安装应用程序列表。可任意选择多个应用程序的快捷方式添加到Launcher上。1、Activity类：AddShortcutsActivity 主要用于显示安装应用程序信息和添加操作界面
2、列表适配： AddShortcutsAdapter 继承BaseAdapter。
3、快捷方式实体类：ShortcutsEntity
4、add_shortcuts_adapter.xml
5、add_shortcuts.xml
直接上代码：
package com.android.launcherex;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import com.android.launcher.R;
public class AddShortcutsActivity extends Activity implements OnClickListener,OnItemClickListener{
private AddShortcutsAdapter mShortcutsAdapter;
private final static String TAG = "AddShortcutsActivity";
private ListView lstShortcuts;
private Button btnAddShortcuts;
private Button btnCancelShortcuts;
private ArrayList<ShortcutsEntity> mShortcutsEntity = new ArrayList<ShortcutsEntity>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_shortcuts);
setupViews();
}
private void setupViews(){
lstShortcuts = (ListView) findViewById(R.id.shortcuts_list);
// lstShortcuts.setItemsCanFocus(false);
lstShortcuts.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
btnAddShortcuts = (Button) findViewById(R.id.shortcuts_add);
btnCancelShortcuts=(Button) findViewById(R.id.shortcuts_cancel);
btnAddShortcuts.setOnClickListener(this);
btnCancelShortcuts.setOnClickListener(this);
lstShortcuts.setOnItemClickListener(this);
mShortcutsEntity = getAllShortcuts();
mShortcutsAdapter = new AddShortcutsAdapter(mShortcutsEntity,this);
lstShortcuts.setAdapter(mShortcutsAdapter);
}
public void onClick(View arg0) {
switch(arg0.getId()){
case R.id.shortcuts_add:
ArrayList<Intent> intents = getSelectedShortcuts();
Intent intent = getIntent();
// Read base intent from extras, otherwise assume default
Parcelable parcel = intent.getParcelableExtra(Intent.EXTRA_INTENT);
if (parcel instanceof Intent) {
intent = (Intent) parcel;
} else {
intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_DEFAULT);
}
Bundle bundle = new Bundle();
bundle.putSerializable("intents", intents);
intent.putExtras(bundle);
setResult(Activity.RESULT_OK,intent);
finish();
break;
case R.id.shortcuts_cancel:
finish();
break;
}
}
/**
* Get all the applications
* @return
*/
private ArrayList<ShortcutsEntity> getAllShortcuts(){
ArrayList<ShortcutsEntity> entitys = new ArrayList<ShortcutsEntity>();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
PackageManager mPackageManager = this.getPackageManager();
List<ResolveInfo> mAllApps = mPackageManager.queryIntentActivities(intent, 0);
int size = mAllApps.size();
for(int i=0;i<size;i++){
ShortcutsEntity entity = new ShortcutsEntity();
ResolveInfo resolveInfo = mAllApps.get(i);
entity.Title = resolveInfo.loadLabel(mPackageManager);
entity.Icon = resolveInfo.loadIcon(mPackageManager);
entity.Info = resolveInfo;
entitys.add(entity);
Log.i(TAG, "entity.Title="+resolveInfo.loadLabel(mPackageManager));
}
//TODO: sort
return entitys;
}
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
mShortcutsAdapter.setSelectItem(arg2);
mShortcutsAdapter.notifyDataSetChanged();
}
/**
* Been selected shortcuts
* @return
*/
private ArrayList<Intent> getSelectedShortcuts(){
ArrayList<Intent> selecteds = new ArrayList<Intent>();
ArrayList<Boolean> isCheck = AddShortcutsAdapter.isChecked;
int checkSize = isCheck.size();
for(int i=0;i<checkSize;i++){
if(isCheck.get(i)){
ShortcutsEntity entity = mShortcutsEntity.get(i);
ActivityInfo activityInfo = entity.Info.activityInfo;
Intent intent = new Intent();
intent.setClassName(activityInfo.applicationInfo.packageName,activityInfo.name);
selecteds.add(intent);
Log.i(TAG, "selected item.name="+mShortcutsEntity.get(i).Title);
}
}
return selecteds;
}
}
package com.android.launcherex;
import java.util.ArrayList;
import com.android.launcher.R;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
public class AddShortcutsAdapter extends BaseAdapter {
private ArrayList<ShortcutsEntity> mShortcuts;
private final LayoutInflater mInflater;
private Context mContext;
public static ArrayList<Boolean> isChecked;
public AddShortcutsAdapter(ArrayList<ShortcutsEntity> shortcuts,Context context)
{
mShortcuts = shortcuts;
mContext = context;
mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
isChecked = new ArrayList<Boolean>();
int size = mShortcuts.size();
for(int i=0;i<size;i++){
isChecked.add(false);
}
}
public int getCount() {
if(mShortcuts!=null){
return mShortcuts.size();
}
return 0;
}
public Object getItem(int arg0) {
if(mShortcuts!=null){
return mShortcuts.get(arg0);
}
return null;
}
public long getItemId(int arg0) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
ShortcutsEntity entity = mShortcuts.get(position);
if(convertView==null){
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.add_shortcuts_adapter, parent, false);
holder.imageView = (ImageView) convertView.findViewById(R.id.sc_icon);
holder.textView = (TextView) convertView.findViewById(R.id.sc_title);
holder.checkBox = (CheckBox) convertView.findViewById(R.id.sc_checkbox);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
if(entity!=null){
holder.textView.setText(entity.Title);
//TODO: Modify the picture size.
holder.imageView.setBackgroundDrawable(Utilities.getDrawable(entity.Icon));
}
if(isChecked!=null && !isChecked.isEmpty()){
holder.checkBox.setChecked(isChecked.get(position));
}
return convertView;
}
public void setSelectItem(int item){
if(isChecked.get(item)){
isChecked.set(item, false);
}else{
isChecked.set(item,true);
}
}
private class ViewHolder{
ImageView imageView;
TextView textView;
CheckBox checkBox;
}
}
package com.android.launcherex;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
public class ShortcutsEntity {
public CharSequence Title;
public Drawable Icon;
public ResolveInfo Info;
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/sc_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="6dip"/>
<TextView
android:id="@+id/sc_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/sc_icon"
android:layout_marginLeft="4dip"/>
<CheckBox
android:id="@+id/sc_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:focusable="false"
android:layout_marginRight="6dip"/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/shortcuts_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_above="@+id/shortcuts_layout"
/>
<LinearLayout
android:id="@+id/shortcuts_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentLeft="true"
android:layout_alignParentBottom="true"
>
<Button
android:id="@+id/shortcuts_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/shortcuts_add_text"/>
<Button
android:id="@+id/shortcuts_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/shortcuts_cancel_text"
/>
</LinearLayout>
</RelativeLayout>
最后在Launcher.java的onActivityResult方法中添加如下代码，即大功告成
Bundle bundle = data.getExtras();
ArrayList<Intent> intents = (ArrayList<Intent>) bundle.getSerializable("intents");
if (intents != null && !intents.isEmpty()) {
int size = intents.size();
for (int i = 0; i < size; i++) {
mAddItemCellInfo = new CellLayout.CellInfo(); // Shortcut to solve the problem of overlapping
completeAddApplication(this, intents.get(i),mAddItemCellInfo);
}
}
break;