在GridView的小部件的Android部件、GridView、oid、Andr

由网友(情深话浅)分享简介：我一直在努力实现小部件我的应用程序是 GridView控件。我是新Android开发。我已经搜索互联网上的很多，但找不到任何帮助。我有点坚持在这里，因为这是不显示任何在我的 GridView控件。任何帮助将是AP preciated。在此先感谢！这是我的code 公共类MainActivity扩展AppWidgetP...

我一直在努力实现小部件我的应用程序是 GridView控件。我是新Android开发。我已经搜索互联网上的很多，但找不到任何帮助。我有点坚持在这里，因为这是不显示任何在我的 GridView控件。任何帮助将是AP preciated。

在此先感谢！

这是我的code

 公共类MainActivity扩展AppWidgetProvider {公共静态最后弦乐TOAST_ACTION =com.example.widgetdevelopment.TOAST_ACTION;公共静态最后弦乐EXTRA_ITEM =com.example.widgetdevelopment.EXTRA_ITEM;@覆盖公共无效的onReceive（上下文的背景下，意图意图）{    AppWidgetManager经理= AppWidgetManager.getInstance（背景）;    如果（intent.getAction（）。等于（TOAST_ACTION））{        INT appWidgetId = intent.getIntExtra（AppWidgetManager.EXTRA_APPWIDGET_ID，                AppWidgetManager.INVALID_APPWIDGET_ID）;        INT viewIndex = intent.getIntExtra（EXTRA_ITEM，0）;        Toast.makeText（背景下，感动观+ viewIndex，Toast.LENGTH_SHORT）.show（）;    }    super.onReceive（背景下，意图）;}@覆盖公共无效的onUpdate（上下文的背景下，AppWidgetManager appWidgetManager，        INT [] appWidgetIds）{    的for（int i = 0; I＆LT; appWidgetIds.length ++我）{        意向意图=新意图（背景下，GridWidgetService.class）;        intent.putExtra（AppWidgetManager.EXTRA_APPWIDGET_ID，appWidgetIds [I]）;        intent.setData（Uri.parse（intent.toUri（Intent.URI_INTENT_SCHEME）））;        RemoteViews RV =新的RemoteViews（context.getPackageName（），R.layout.activity_main）;        rv.setRemoteAdapter（appWidgetIds [I]，R.id.gridView1，意向）;        rv.setEmptyView（R.id.gridView1，R.id.empty_view）;        意图toastIntent =新意图（背景下，MainActivity.class）;        toastIntent.setAction（MainActivity.TOAST_ACTION）;        toastIntent.putExtra（AppWidgetManager.EXTRA_APPWIDGET_ID，appWidgetIds [I]）;        intent.setData（Uri.parse（intent.toUri（Intent.URI_INTENT_SCHEME）））;        的PendingIntent toastPendingIntent;     toastPendingIntent=PendingIntent.getBroadcast(context,0,toastIntent,PendingIntent.FLAG_UPDATE_CURRENT);        rv.setPendingIntentTemplate（R.id.gridView1，toastPendingIntent）;        appWidgetManager.updateAppWidget（appWidgetIds [I]，RV）;    }    super.onUpdate（背景下，appWidgetManager，appWidgetIds）;}}

这是我的RemoteViewServices类

 公共类GridWidgetService扩展RemoteViewsService {@覆盖公共RemoteViewsFactory onGetViewFactory（意向意图）{    // TODO自动生成方法存根    返回新GridRemoteViewsFactory（this.getApplicationContext（），意向）;}}公共类GridRemoteViewsFactory实现RemoteViewsFactory {私有静态最终诠释mCount = 10;私人列表＆LT; WidgetItem＆GT; mWidgetItems =新的ArrayList＆LT; WidgetItem＆GT;（）;私人语境mContext;私人诠释mAppWidgetId;公共GridRemoteViewsFactory（上下文的背景下，意图意图）{    mContext =背景;    mAppWidgetId = intent.getIntExtra（AppWidgetManager.EXTRA_APPWIDGET_ID，            AppWidgetManager.INVALID_APPWIDGET_ID）;}@覆盖公共无效的onCreate（）{    的for（int i = 0; I＆LT; mCount;我++）{        mWidgetItems.add（新WidgetItem第（i +）！）;    }    尝试{        视频下载（3000）;    }赶上（InterruptedException的E）{        e.printStackTrace（）;    }}@覆盖公共无效onDataSetChanged（）{    // TODO自动生成方法存根}@覆盖公共无效的onDestroy（）{    // mWidgetItems.clear（）;}@覆盖公众诠释的getCount（）{    // TODO自动生成方法存根    返回mCount;}@覆盖公共RemoteViews getViewAt（INT位置）{    RemoteViews RV =新的RemoteViews（mContext.getPackageName（），R.layout.widget_item）;    rv.setTextViewText（R.id.widget_item，mWidgetItems.get（位置）.getSomething（））;    捆绑额外=新包（）;    extras.putInt（MainActivity.EXTRA_ITEM，位置）;    意图fillInIntent =新的Intent（）;    fillInIntent.putExtras（临时演员）;    rv.setOnClickFillInIntent（R.id.widget_item，fillInIntent）;    返回rv;}@覆盖公共RemoteViews getLoadingView（）{    // TODO自动生成方法存根    返回null;}@覆盖公众诠释getViewTypeCount（）{    // TODO自动生成方法存根    返回2;}@覆盖众长getItemId（INT位置）{    // TODO自动生成方法存根    返回0;}@覆盖公共布尔hasStableIds（）{    // TODO自动生成方法存根    返回true;}}

这是我的对象类。

 公共类WidgetItem {字符串的东西;公共WidgetItem（字符串的东西）{超（）;this.something =东西;}公共字符串getSomething（）{返回的东西;}公共无效setSomething（字符串的东西）{this.something =东西;}}

Widget_item XML

 ＆LT;的RelativeLayout的xmlns：机器人=http://schemas.android.com/apk/res/android的xmlns：工具=http://schemas.android.com/tools机器人：layout_width =match_parent机器人：layout_height =match_parent机器人：paddingBottom会=@扪/ activity_vertical_margin机器人：paddingLeft =@扪/ activity_horizontal_margin机器人：paddingRight =@扪/ activity_horizontal_margin机器人：paddingTop =@扪/ activity_vertical_margin工具：上下文=com.example.widgetdevelopment.MainActivity＆GT; ＆LT;的TextView    机器人：ID =@ + ID / widget_item    机器人：layout_width =WRAP_CONTENT    机器人：layout_height =WRAP_CONTENT    机器人：文字=@字符串/参考hello world/＆GT; ＆LT; / RelativeLayout的＆GT;

Main_Activity布局（这种布局是widget的包含布局的 GridView控件）

 ＆LT;的RelativeLayout的xmlns：机器人=http://schemas.android.com/apk/res/android 的xmlns：工具=http://schemas.android.com/tools 机器人：layout_width =match_parent 机器人：layout_height =match_parent 机器人：重力=顶 机器人：paddingBottom会=@扪/ activity_vertical_margin 机器人：paddingLeft =@扪/ activity_horizontal_margin 机器人：paddingRight =@扪/ activity_horizontal_margin 机器人：paddingTop =@扪/ activity_vertical_margin 工具：上下文=MainActivity。＆GT; ＆LT;的TextView  机器人：ID =@ + ID / textView1  机器人：layout_width =WRAP_CONTENT  机器人：layout_height =WRAP_CONTENT  机器人：layout_alignParentLeft =真  机器人：layout_alignParentTop =真  机器人：文字=@字符串/网站  机器人：textAppearance =机器人：ATTR / textAppearanceMedium/＆GT; ＆LT;按钮   机器人：ID =@ + ID /按钮1   机器人：layout_width =WRAP_CONTENT   机器人：layout_height =WRAP_CONTENT   机器人：layout_alignLeft =@ + ID / textView1   机器人：layout_below =@ + ID / textView1   机器人：文字=@字符串/ APP_NAME/＆GT; ＆LT; GridView控件   机器人：ID =@ + ID / gridView1   机器人：layout_width =150dp   机器人：layout_height =100dp   机器人：layout_alignLeft =@ + ID /按钮1   机器人：layout_alignParentRight =真   机器人：layout_below =@ + ID /按钮1   机器人：为numColumns =3＆GT; ＆LT; / GridView的＆GT; ＆LT;的TextView    机器人：ID =@ + ID / empty_view    机器人：layout_width =match_parent    机器人：layout_height =match_parent    机器人：比重=中心    机器人：文字颜色=＃FFFFFF    机器人：文字样式=大胆    机器人：文字=empty_view_text    机器人：TEXTSIZE =20SP/＆GT;  ＆LT; / RelativeLayout的＆GT;

解决方案

你有注册的服务在AndroidManifest.xml？像这样的：

 ＆LT;服务机器人：名字=GridWidgetService   机器人：权限=android.permission.BIND_REMOTEVIEWS/＆GT;

I have been trying to implement widget for my application with GridView . I am new to Android Development. I have searched a lot on internet but could not find anything helpful. I am kind of stuck here , as this is not showing anything on my GridView . Any help would be appreciated.

Thanks in advance !

This is my Code

public class MainActivity extends AppWidgetProvider{

public static final String TOAST_ACTION = "com.example.widgetdevelopment.TOAST_ACTION";
public static final String EXTRA_ITEM = "com.example.widgetdevelopment.EXTRA_ITEM";



@Override
public void onReceive(Context context, Intent intent) {

    AppWidgetManager mgr = AppWidgetManager.getInstance(context);
    if (intent.getAction().equals(TOAST_ACTION)) {
        int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
                AppWidgetManager.INVALID_APPWIDGET_ID);
        int viewIndex = intent.getIntExtra(EXTRA_ITEM, 0);
        Toast.makeText(context, "Touched view " + viewIndex,      Toast.LENGTH_SHORT).show();
    }
    super.onReceive(context, intent);
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
        int[] appWidgetIds)  {
    for (int i = 0; i < appWidgetIds.length; ++i) {
        Intent intent = new Intent(context, GridWidgetService.class);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]);

        intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
        RemoteViews rv = new RemoteViews(context.getPackageName(), R.layout.activity_main);
        rv.setRemoteAdapter(appWidgetIds[i], R.id.gridView1, intent);

        rv.setEmptyView(R.id.gridView1, R.id.empty_view);


        Intent toastIntent = new Intent(context, MainActivity.class);

        toastIntent.setAction(MainActivity.TOAST_ACTION);
        toastIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[i]);
        intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
        PendingIntent toastPendingIntent;
     toastPendingIntent=PendingIntent.getBroadcast(context,0,toastIntent,PendingIntent.FLAG_UPDATE_CURRENT);
        rv.setPendingIntentTemplate(R.id.gridView1, toastPendingIntent);

        appWidgetManager.updateAppWidget(appWidgetIds[i], rv);   
    }

    super.onUpdate(context, appWidgetManager, appWidgetIds);

}   

}

This is my RemoteViewServices Class

public class GridWidgetService extends RemoteViewsService{

@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {
    // TODO Auto-generated method stub
    return new GridRemoteViewsFactory(this.getApplicationContext(), intent);
}

}



public class GridRemoteViewsFactory implements RemoteViewsFactory {

private static final int mCount = 10;
private List<WidgetItem> mWidgetItems = new ArrayList<WidgetItem>();
private Context mContext;
private int mAppWidgetId;

public GridRemoteViewsFactory(Context context, Intent intent) {
    mContext = context;
    mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
            AppWidgetManager.INVALID_APPWIDGET_ID);
}

@Override
public void onCreate() {
    for (int i = 0; i < mCount; i++) {
        mWidgetItems.add(new WidgetItem(i + "!"));
    }
    try {
        Thread.sleep(3000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

}

@Override
public void onDataSetChanged() {
    // TODO Auto-generated method stub

}

@Override
public void onDestroy() {
    //  mWidgetItems.clear();

}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return mCount;
}

@Override
public RemoteViews getViewAt(int position) {


    RemoteViews rv = new RemoteViews(mContext.getPackageName(), R.layout.widget_item);
    rv.setTextViewText(R.id.widget_item, mWidgetItems.get(position).getSomething());
    Bundle extras = new Bundle();
    extras.putInt(MainActivity.EXTRA_ITEM, position);
    Intent fillInIntent = new Intent();
    fillInIntent.putExtras(extras);
    rv.setOnClickFillInIntent(R.id.widget_item, fillInIntent);

    return rv;
}

@Override
public RemoteViews getLoadingView() {
    // TODO Auto-generated method stub
    return null;
}



@Override
public int getViewTypeCount() {
    // TODO Auto-generated method stub
    return 2;
}

@Override
public long getItemId(int position) {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public boolean hasStableIds() {
    // TODO Auto-generated method stub
    return true;
}

}

This is my Object class .

public class WidgetItem {
String something;


public WidgetItem(String something) {
super();
this.something = something;
}

public String getSomething() {
return something;
}

public void setSomething(String something) {
this.something = something;
}

}

Widget_item XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.widgetdevelopment.MainActivity" >

 <TextView
    android:id="@+id/widget_item"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

 </RelativeLayout>

Main_Activity Layout (this layout is the layout of the Widget containing GridView )

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:gravity="top"
 android:paddingBottom="@dimen/activity_vertical_margin"
 android:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 tools:context=".MainActivity" >

 <TextView
  android:id="@+id/textView1"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentLeft="true"
  android:layout_alignParentTop="true"
  android:text="@string/website"
  android:textAppearance="?android:attr/textAppearanceMedium" />

 <Button
   android:id="@+id/button1"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_alignLeft="@+id/textView1"
   android:layout_below="@+id/textView1"
   android:text="@string/app_name" />

 <GridView
   android:id="@+id/gridView1"
   android:layout_width="150dp"
   android:layout_height="100dp"
   android:layout_alignLeft="@+id/button1"
   android:layout_alignParentRight="true"
   android:layout_below="@+id/button1"
   android:numColumns="3" >

 </GridView>
 <TextView
    android:id="@+id/empty_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"

    android:textColor="#ffffff"
    android:textStyle="bold"
    android:text="empty_view_text"
    android:textSize="20sp" />

  </RelativeLayout>

解决方案

Have you registered service in the AndroidManifest.xml? Like this :

<service android:name="GridWidgetService"
   android:permission="android.permission.BIND_REMOTEVIEWS" />

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在GridView的小部件的Android部件、GridView、oid、Andr