android weiget 实时数据更新
转自： http://www.maxiaoguo.com/shipin/346.html
最近项目需要widget，最近做了一下，
要求如图
是一个widget
点击widget
要求 这个widget中的图标是实时更新的， 这个弹出框是一个activity 详情看上篇博客。
创建widget的过程
1、 先看AndroidManifest.xml
<!-- 桌面小控件 -->
<service android:name=".service.WidghtService"/>
<receiver android:name=".widget.WidgetProvider"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> <span style="white-space:pre"> </span></intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/widgetinfo" /> </receiver>
2、顺着 需要在xml文件夹下弄个widgetinfo.xml
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="72dp"
android:minHeight="72dp"
android:updatePeriodMillis="0"
android:initialLayout="@layout/widget_ico"
>
</appwidget-provider>
注意 android:updatePeriodMillis="0" 数值弄成0就可以了，看网上说在2.2以后这个值就不管用了，更新的时候需要起一个service
3、在配置文件中还提到一个WidgetProvider
package com.m4399.gamecenter.widget;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import com.m4399.gamecenter.common.NativeGameDao;
import com.m4399.gamecenter.service.WidghtService;
public class WidgetProvider extends AppWidgetProvider {
NativeGameDao dao;
@Override
public void onDeleted(Context context, int[] appWidgetIds) {//有部分被删除就会执行
// TODO Auto-generated method stub
super.onDeleted(context, appWidgetIds);
}
@Override
public void onEnabled(Context context) {//当第一次添加部件到卓面时会调用该 方法
// TODO Auto-generated method stub
super.onEnabled(context);
}
@Override
public void onDisabled(Context context) {//在最后一个同类型部件被删除的时候调用
context.stopService(new Intent(context, WidghtService.class));
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
Intent intent = new Intent(context,WidghtService.class);
intent.setAction(WidghtService.START_ACTION);
intent.putExtra("update", true);
context.startService(intent);
}
}
其中update方法是更新widget的
4、那我们需要新建一个service
package com.m4399.gamecenter.service;
import java.io.InputStream;
import java.util.Vector;
import com.m4399.gamecenter.R;
import com.m4399.gamecenter.common.NativeGameDao;
import com.m4399.gamecenter.ui.ScDialogActivity;
import com.m4399.gamecenter.util.AppUtils;
import com.m4399.gamecenter.util.LogTag;
import com.m4399.gamecenter.vo.GameInfo;
import com.m4399.gamecenter.widget.WidgetProvider;
import android.app.PendingIntent;
import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.IBinder;
import android.widget.RemoteViews;
public class WidghtService extends Service {
public static String START_ACTION = "com.m4399.gamecenter.service.WidghtService";
private NativeGameDao dao;
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onStart(Intent intent, int startId) {
if(intent!=null){
Bundle data = intent.getExtras();
String action = intent.getAction();
if(data==null)return;
boolean update = data.getBoolean("update");// 操作类型
if (START_ACTION.equals(action)) {// 注册流程
if(update){
RemoteViews mRemoteViews = buildUpdate(this);
ComponentName thisWidget = new ComponentName(this, WidgetProvider.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, mRemoteViews);
}
}
}
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
private RemoteViews buildUpdate(final Context context) {
final RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.widget_ico);
// rv.setImageViewBitmap(viewId, bitmap)
Intent intent = new Intent(context, ScDialogActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
rv.setOnClickPendingIntent(R.id.widget_fl, PendingIntent.getActivity(context, 0,intent, 0));
Vector<GameInfo> s;
if(dao==null){
dao = new NativeGameDao(context);
}
s = dao.getLastlyGame();
// Comparator comp=Collections.reverseOrder();
// Collections.sort(s, comp);
Resources r = getResources();
InputStream is = r.openRawResource(R.drawable.transparent);
BitmapDrawable bmpDraw = new BitmapDrawable(is);
Bitmap bmp = bmpDraw.getBitmap();
for(int i=0;i<5;i++){
if(s!=null&&s.size()>i){
GameInfo gameInfo = s.get(i);
//LogTag.showTAG_e("tag", gameInfo.name+"000");
if(gameInfo!=null){
Drawable drawableUnder = AppUtils.getIconFromPKname(context, gameInfo.packageName);
if(drawableUnder!=null){
BitmapDrawable bitmapDrawableUnder = (BitmapDrawable)drawableUnder;
Bitmap bitmapUnder = bitmapDrawableUnder.getBitmap().copy(Bitmap.Config.ARGB_8888, true);
int size = s.size();
if(size==1){
rv.setImageViewBitmap(R.id.widget_ico_f, bitmapUnder);
rv.setImageViewBitmap(R.id.widget_ico_s, bmp);
rv.setImageViewBitmap(R.id.widget_ico_t, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fo, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fif, bmp);
}else if(size==2){
switch (i) {
case 0:
rv.setImageViewBitmap(R.id.widget_ico_s, bitmapUnder);
break;
case 1:
rv.setImageViewBitmap(R.id.widget_ico_f, bitmapUnder);
break;
}
rv.setImageViewBitmap(R.id.widget_ico_t, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fo, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fif, bmp);
}else if(size==3){
switch (i) {
case 0:
rv.setImageViewBitmap(R.id.widget_ico_t, bitmapUnder);
break;
case 1:
rv.setImageViewBitmap(R.id.widget_ico_s, bitmapUnder);
break;
case 2:
rv.setImageViewBitmap(R.id.widget_ico_f, bitmapUnder);
break;
}
rv.setImageViewBitmap(R.id.widget_ico_fo, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fif, bmp);
}else if(size==4){
switch (i) {
case 0:
rv.setImageViewBitmap(R.id.widget_ico_fo, bitmapUnder);
break;
case 1:
rv.setImageViewBitmap(R.id.widget_ico_t, bitmapUnder);
break;
case 2:
rv.setImageViewBitmap(R.id.widget_ico_s, bitmapUnder);
break;
case 3:
rv.setImageViewBitmap(R.id.widget_ico_f, bitmapUnder);
break;
}
rv.setImageViewBitmap(R.id.widget_ico_fif, bmp);
}
else if(size>4){
switch (i) {
case 0:
rv.setImageViewBitmap(R.id.widget_ico_fif, bitmapUnder);
break;
case 1:
rv.setImageViewBitmap(R.id.widget_ico_fo, bitmapUnder);
break;
case 2:
rv.setImageViewBitmap(R.id.widget_ico_t, bitmapUnder);
break;
case 3:
rv.setImageViewBitmap(R.id.widget_ico_s, bitmapUnder);
break;
case 4:
rv.setImageViewBitmap(R.id.widget_ico_f, bitmapUnder);
break;
default:
break;
}
}
}
}
}
}
if(s==null||s.size()==0){
rv.setImageViewBitmap(R.id.widget_ico_f, bmp);
rv.setImageViewBitmap(R.id.widget_ico_s, bmp);
rv.setImageViewBitmap(R.id.widget_ico_t, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fo, bmp);
rv.setImageViewBitmap(R.id.widget_ico_fif, bmp);
}
return rv;
}
}
代码写的有点乱，逻辑走的不是很好。
5、service中提到一个R.layout.widget_ico 布局文件
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="72dp"
android:layout_height="72dp"
android:id="@+id/widget_fl"
>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/game_frame_sc_back"
android:layout_gravity="bottom|left"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/widget_ico_f"
android:layout_marginLeft="15dp"
android:layout_marginBottom="15dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/widget_ico_s"
android:layout_marginLeft="12dp"
android:layout_marginBottom="12dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/widget_ico_t"
android:layout_marginLeft="9dp"
android:layout_marginBottom="9dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/widget_ico_fo"
android:layout_marginBottom="7dp"
android:layout_marginLeft="7dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/widget_ico_fif"
android:layout_marginLeft="4dp"
android:layout_marginBottom="5dp"
android:layout_gravity="bottom|left"
/>
</LinearLayout>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|left"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/game_frame_sc_front"
android:layout_gravity="bottom|left"
/>
</LinearLayout>
</FrameLayout>
更新widget的时候只要给service传个值就行了
Intent intent = new Intent(context,WidghtService.class);
intent.setAction(WidghtService.START_ACTION);
intent.putExtra("update", true);
context.startService(intent);