该方法startActivity（意向）是未定义的类型？ [英] The method startActivity(Intent) is undefined for the type?

问题描述

所以我尝试启动由​​pressing微件的活动。我一直运行到错误的方法startActivity（意向）是未定义的类型的照片任何帮助是非常AP preciated！我的类code是如下：

 包com.natehoch96.widgets.iOS;

进口android.appwidget.AppWidgetProvider;
进口android.content.Intent;


公共类图片扩展AppWidgetProvider {

    意图myIntent =新的意图（android.provider.Settings.ACTION_SETTINGS）;
    {startActivity（myIntent）; }

}
 

解决方案

您需要实现的OnUpdate（）和的onReceive（）在你的AppWidgetProvider类的方法，是这样的：

 公共无效的OnUpdate（上下文的背景下，AppWidgetManager appWidgetManager，
    INT [] appWidgetIds）{
    最终诠释N = appWidgetIds.length;
    的for（int i = 0; I＆n种;我++）{
        INT appWidgetId = appWidgetIds [I]

        //获取你的部件布局的意见
        RemoteViews意见=新RemoteViews（context.getPackageName（）
            R.layout.my_widget）;

        //创建一个悬而未决的意图的插件点击
        意向意图=新的意图（背景下，Photos.class）;
        intent.setAction（PhotosAction）;
        PendingIntent pendingIntent =
            PendintIntent.getBroadcast（上下文，0，意图，0）;
        views.setOnClickPendingIntent（R.id.widget_click_view，pendingIntent）;

        appWidgetManager.updateAddWidget（appWidgetId，意见）;
    }
}
 

然后再编写的onReceive（）方法来接收未决的意图，并启动相关活动：

 公共无效的onReceive（上下文的背景下，意图意图）{
    super.onReceive（背景下，意图）;

    如果（intent.getAction（）。等于（PhotosAction）{
        //收到的照片行动对行动，开始你的目标活动
        意图I =新的意图（android.provider.Settings.ACTION_SETTINGS）;
        i.setFlags（Intent.FLAG_ACTIVITY_NEW_TASK）;
        context.startActivity（ⅰ）;
    }
}
 

So im trying to start an activity by pressing a widget. I keep running into the error "The method startActivity(Intent) is undefined for the type Photos" any help is much appreciated! My class code is below:

package com.natehoch96.widgets.iOS;

import android.appwidget.AppWidgetProvider;
import android.content.Intent;


public class Photos extends AppWidgetProvider {

    Intent myIntent = new Intent(android.provider.Settings.ACTION_SETTINGS);
    {startActivity(myIntent); }

}

解决方案

You need to implement the onUpdate() and onReceive() methods in your AppWidgetProvider class, something like this:

public void onUpdate(Context context, AppWidgetManager appWidgetManager, 
    int[] appWidgetIds) {
    final int N = appWidgetIds.length;
    for (int i=0; i<N; i++) {
        int appWidgetId = appWidgetIds[i];

        //Get the views for your widget layout
        RemoteViews views = new RemoteViews(context.getPackageName(), 
            R.layout.my_widget);

        //Create a pending intent for a widget click
        Intent intent = new Intent(context, Photos.class);
        intent.setAction("PhotosAction");
        PendingIntent pendingIntent = 
            PendintIntent.getBroadcast(context, 0, intent, 0);
        views.setOnClickPendingIntent(R.id.widget_click_view, pendingIntent);

        appWidgetManager.updateAddWidget(appWidgetId, views);
    }
}

Then write your onReceive() method to receive the pending intent and start the relevant activity:

public void onReceive(Context context, Intent intent) {
    super.onReceive(context, intent);

    if (intent.getAction().equals("PhotosAction") {
        //Received photos action action, start your target activity
        Intent i = new Intent(android.provider.Settings.ACTION_SETTINGS);
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
    }
}

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