Java 每5秒更新一次Android小部件
我刚开始学习Android,并根据教程编写了以下代码 这是更新文本区域,如果点击它,但我想在每30秒更新一次。我该怎么做 我想测量我的脉搏并通过蓝牙发送数据。如果我的脉搏太高,小部件就会警告我(声音)。最好的管理方法是什么,我想每15秒检查一次。最有效的方法是什么Java 每5秒更新一次Android小部件,java,android,android-widget,Java,Android,Android Widget,我刚开始学习Android,并根据教程编写了以下代码 这是更新文本区域,如果点击它,但我想在每30秒更新一次。我该怎么做 我想测量我的脉搏并通过蓝牙发送数据。如果我的脉搏太高,小部件就会警告我(声音)。最好的管理方法是什么,我想每15秒检查一次。最有效的方法是什么 package com.test; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java
package com.test;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import com.test.R;
import android.app.PendingIntent;
import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.RemoteViews;
import android.widget.Toast;
public class WidgetActivity extends AppWidgetProvider {
public static WidgetActivity Widgetke = null;
public static Context context;
public static AppWidgetManager appWidgetManager;
public static int appWidgetIds[];
@Override
public void onUpdate( Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds ) {
if (null == context) context = WidgetActivity.context;
if (null == appWidgetManager) appWidgetManager = WidgetActivity.appWidgetManager;
if (null == appWidgetIds) appWidgetIds = WidgetActivity.appWidgetIds;
WidgetActivity.Widgetke = this;
WidgetActivity.context = context;
WidgetActivity.appWidgetManager = appWidgetManager;
WidgetActivity.appWidgetIds = appWidgetIds;
Log.i("PXR", "onUpdate");
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
updateAppWidget(context,appWidgetManager, appWidgetId);
}
}
static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
int appWidgetId) {
DateFormat format = SimpleDateFormat.getTimeInstance( SimpleDateFormat.MEDIUM, Locale.getDefault() );
CharSequence text = "Time: " + format.format( new Date());
Intent intent = new Intent(context, UpdateService.class);
PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
remoteViews.setOnClickPendingIntent(R.id.mainlayout, pendingIntent);
remoteViews.setTextViewText(R.id.test_out, text);
// Tell the widget manager
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
public static class UpdateService extends Service {
@Override
public void onStart(Intent intent, int startId) {
WidgetActivity.Widgetke.onUpdate(context, appWidgetManager, appWidgetIds);
Toast.makeText(context, "Update Widget", Toast.LENGTH_SHORT).show();
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
}
package.com.test;
导入java.text.DateFormat;
导入java.text.simpleDataFormat;
导入java.util.Date;
导入java.util.Locale;
导入com.test.R;
导入android.app.pendingent;
导入android.app.Service;
导入android.appwidget.AppWidgetManager;
导入android.appwidget.AppWidgetProvider;
导入android.content.Context;
导入android.content.Intent;
导入android.os.IBinder;
导入android.util.Log;
导入android.widget.remoteview;
导入android.widget.Toast;
公共类WidgetActivity扩展了AppWidgetProvider{
公共静态WidgetActivity Widgetke=null;
公共静态语境;
公共静态AppWidgetManager AppWidgetManager;
公共静态int-appWidgetIds[];
@凌驾
public void onUpdate(上下文上下文,AppWidgetManager AppWidgetManager,int[]AppWidgetId){
如果(null==context)context=WidgetActivity.context;
如果(null==appWidgetManager)appWidgetManager=WidgetActivity.appWidgetManager;
如果(null==appWidgetIds)appWidgetIds=WidgetActivity.appWidgetIds;
WidgetActivity.Widgetke=this;
WidgetActivity.context=上下文;
WidgetActivity.appWidgetManager=appWidgetManager;
WidgetActivity.AppWidgetId=AppWidgetId;
Log.i(“PXR”、“onUpdate”);
final int N=appWidgetIds.length;
对于(int i=0;i,您可以启动一个新线程并使用带有睡眠的for(;;)循环。您可以从那里使用处理程序(android.os.Handler)更新UI:
或者,.此链接给出404错误。您能介绍一下这篇文章或其中的代码吗?这样可以帮助我继续小部件的实现。@SteveDesai:我修复了此链接