android小部件更新期间milles不工作

Question

我是一个新的android开发人员,试图编写一个小部件.."updatePeriodMillis"参数告诉小部件在给定的duraion之后调用onupdate方法,但它不会发生在我身上....

有人可以指出我的错误..这是我的档案

SRC/hellowidget.java

package de.thesmile.android.widget;

import android.appwidget.AppWidgetProvider;
import java.util.Random;

import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;



public class HelloWidget extends AppWidgetProvider {
    int number =0;


    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
            int[] appWidgetIds) {

         number = (new Random().nextInt(100));
        for (int appWidgetId : appWidgetIds) {


            RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.main);
            views.setTextViewText(R.id.TextView01, String.valueOf(number));
            appWidgetManager.updateAppWidget(appWidgetId, views);

        }

    }


}

XML/hello_widget_provider.xml

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="146dip"
android:minHeight="72dip"
android:updatePeriodMillis="1000"
android:initialLayout="@layout/main"
/>

main.xml中

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent"
android:orientation="vertical"

android:layout_gravity="center"
android:layout_height="wrap_content">
<TextView android:text="@+id/TextView01" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><TextView android:padding="10dip" android:layout_marginTop="5dip" android:layout_gravity="center_horizontal|center" android:text="@string/widget_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/widget_textview" android:textColor="@android:color/black"></TextView>


</LinearLayout>

android清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.thesmile.android.widget"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<!-- Broadcast Receiver that will process AppWidget updates -->
<receiver android:name=".HelloWidget" android:label="@string/app_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/hello_widget_provider" />
</receiver>
</application>
<uses-sdk android:minSdkVersion="7" />
</manifest>

Answer 1

小部件的更新时间被强制至少30分钟,以避免糟糕的编程小部件干电池.使用AlarmManager来克服这个(见这个职位).