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Android小工具：添加一个新的项目（＆QUOT;作者＆QUOT;）的TextView

本文介绍了Android小工具：添加一个新的项目（＆QUOT;作者＆QUOT;）的TextView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

大家好，我开发一个简单的Andr​​oid窗口小部件（行情）。该项目工作正常，但我想补充一个新的TextView，显示了特定的思想的作者。我创建了widget.xml（布局）的新的TextView ....我是新手！

在这里，code是：

WidgetQuotes.Java 

 进口android.app.PendingIntent;
  进口android.appwidget.AppWidgetManager;
  进口android.appwidget.AppWidgetProvider;
  进口android.content.Context;
  进口android.content.Intent;
  进口android.widget.RemoteViews;   公共类WidgetQuotes扩展AppWidgetProvider {@覆盖
公共无效的onUpdate（上下文的背景下，AppWidgetManager appWidgetManager，INT [] appWidgetIds）{
    super.onUpdate（背景下，appWidgetManager，appWidgetIds）;    //构建意图调用服务
    RemoteViews remoteViews =新的RemoteViews（context.getPackageName（），R.layout.widget）;
    意向意图=新意图（context.getApplicationContext（），UpdateWidgetService.class）;
    intent.putExtra（AppWidgetManager.EXTRA_APPWIDGET_IDS，appWidgetIds）;    RemoteViews remoteViews2 =新的RemoteViews（context.getPackageName（），R.layout.widget）;
    意图int​​ent2 =新意图（context.getApplicationContext（），UpdateWidgetService.class）;
    intent.putExtra（AppWidgetManager.EXTRA_APPWIDGET_IDS，appWidgetIds）;    //要处理发生的点击，我们必须使用挂起的意图作为
    // onClickListener是
    //通过主屏幕应用excecuted
    的PendingIntent的PendingIntent = PendingIntent.getService（
            context.getApplicationContext（），0，意向，PendingIntent.FLAG_UPDATE_CURRENT）;    remoteViews.setOnClickPendingIntent（R.id.widget_textview，的PendingIntent）;
    的PendingIntent pendingIntent2 = PendingIntent.getService（
            context.getApplicationContext（），0，intent2，PendingIntent.FLAG_UPDATE_CURRENT）;    remoteViews2.setOnClickPendingIntent（R.id.widget_textview2，pendingIntent2）;
    //最后有关点击的信息更新所有部件
    //监听器
    appWidgetManager.updateAppWidget（appWidgetIds，remoteViews）;    appWidgetManager.updateAppWidget（appWidgetIds，remoteViews2）;    //更新通过服务窗口小部件
    context.startService（意向）;
    context.startService（intent2）;
}@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
    super.onReceive（背景下，意图）;}
公共无效onReceive1（上下文的背景下，意图int​​ent2）{
    super.onReceive（背景下，intent2）;
}}

UpdateWidgetService.Java 

 进口java.io.BufferedReader中;
    进口java.io.IOException异常;
    进口的java.io.InputStream;
    进口java.io.InputStreamReader中;
    进口的java.util.ArrayList;
    进口的java.util.List;
    进口了java.util.Random;   进口android.app.Service;
   进口android.appwidget.AppWidgetManager;
   进口android.content.Intent;
   进口android.content.res.AssetManager;
   进口android.os.IBinder;
   进口android.util.Log;
   进口android.widget.RemoteViews;   公共类UpdateWidgetService延伸服务{
私有静态最后弦乐TAG = UpdateWidgetService.class.getSimpleName（）;@覆盖
公众的IBinder onBind（意向为arg0）{
    返回null;
}@覆盖
公共无效调用onStart（意向意图，诠释startId）{
    super.onStart（意向，startId）;    Log.d（TAG，在onStart开始）;    //创建一些随机数据
    随机随机=新的随机（）;    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance（this.getApplicationContext（））;    INT [] = appWidgetIds intent.getIntArrayExtra（AppWidgetManager.EXTRA_APPWIDGET_IDS）;    如果（appWidgetIds.length大于0）{        对于（INT为widgetid：appWidgetIds）{
            清单＆LT;串GT;的QList = getListFromTxtFile（quotes.txt）;
            INT nextInt = random.nextInt（qList.size（））;            RemoteViews remoteViews =新的RemoteViews（getPackageName（），R.layout.widget）;
            remoteViews.setTextViewText（R.id.widget_textview，qList.get（nextInt））;
            appWidgetManager.updateAppWidget（为widgetid，remoteViews）;
        }
        stopSelf（）;
    }
    super.onStart（意向，startId）;
}公开名单＆LT;串GT; getListFromTxtFile（字符串txtFileName）{//文件的SD卡= Environment.getExternalStorageDirectory（）;
//获取文本文件
//文件文件=新的文件（SD卡，txtFileName）;AssetManager上午= this.getAssets（）;清单＆LT;串GT;的QList =新的ArrayList＆LT;串GT;（）;//从文件中读取文本尝试{
    InputStream为= am.open（quotes.txt）;
          //的BufferedReader BR =新的BufferedReader（新的FileReader（文件））;
    BR的BufferedReader =新的BufferedReader（新的InputStreamReader（是））;
    串线;     //获得通过行文本文件中的行数据
    而（（行= br.readLine（））！= NULL）{        Log.d（线，线）;       qList.add（线）;
    }
}
赶上（IOException异常五）{
    //你需要在这里添加正确的错误处理    {Log.d（错误，有错误）;}
}
返回的QList;}   }

Widget.xml
        

 ＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
机器人：layout_width =FILL_PARENT
机器人：layout_height =160dp
机器人：方向=垂直
机器人：背景=@绘制/ widget_frame3
机器人：layout_gravity =中心＆GT;＆LT;的TextView
    机器人：ID =@ + ID / widget_textview
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：layout_gravity =左| CENTER_HORIZONTAL
    机器人：layout_marginLeft =80dp
    机器人：layout_marginRight =10dp
    机器人：layout_marginTop =30dp
    机器人：填充=10dip
    机器人：滚动条=垂直
    机器人：文字=@字符串/ widget_text
    机器人：文字颜色=@机器人：彩色/白/＆GT;＆LT;的TextView
    机器人：ID =@ + ID / widget_textview2
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：layout_gravity =左| CENTER_HORIZONTAL
    机器人：layout_marginLeft =80dp
    机器人：layout_marginRight =10dp
    机器人：layout_marginTop =20dp
    机器人：填充=10dip
    机器人：滚动条=垂直
    机器人：文字=@字符串/ widget_text2
    机器人：文字颜色=@机器人：彩色/白/＆GT;    ＆LT; / LinearLayout中＆GT;


解决方案

我觉得你不能创建一个小部件文本视图。只有挖掘和触摸有可能在小部件

Everyone, I am developing a simple android widget ("Quotes"). The project is working fine, but I would like to add a new textview that shows the author of the specific "thought". I created a new textview in widget.xml (layout).... I'm a newbie!!!

Here the code is:

WidgetQuotes.Java

  import android.app.PendingIntent;
  import android.appwidget.AppWidgetManager;
  import android.appwidget.AppWidgetProvider;
  import android.content.Context;
  import android.content.Intent;
  import android.widget.RemoteViews;

   public class WidgetQuotes extends AppWidgetProvider {

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

    // Build the intent to call the service
    RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
    Intent intent = new Intent(context.getApplicationContext(), UpdateWidgetService.class);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);

    RemoteViews remoteViews2 = new RemoteViews(context.getPackageName(), R.layout.widget);
    Intent intent2 = new Intent(context.getApplicationContext(), UpdateWidgetService.class);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);

    // To react to a click we have to use a pending intent as the
    // onClickListener is
    // excecuted by the homescreen application
    PendingIntent pendingIntent = PendingIntent.getService(
            context.getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    remoteViews.setOnClickPendingIntent(R.id.widget_textview, pendingIntent);


    PendingIntent pendingIntent2 = PendingIntent.getService(
            context.getApplicationContext(), 0, intent2, PendingIntent.FLAG_UPDATE_CURRENT);

    remoteViews2.setOnClickPendingIntent(R.id.widget_textview2, pendingIntent2);


    // Finally update all widgets with the information about the click
    // listener
    appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);

    appWidgetManager.updateAppWidget(appWidgetIds, remoteViews2);

    // Update the widgets via the service
    context.startService(intent);
    context.startService(intent2);
}

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

}
public void onReceive1(Context context, Intent intent2) {   
    super.onReceive(context, intent2);
}



}

UpdateWidgetService.Java

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Random;



   import android.app.Service;
   import android.appwidget.AppWidgetManager;
   import android.content.Intent;
   import android.content.res.AssetManager;
   import android.os.IBinder;
   import android.util.Log;
   import android.widget.RemoteViews;

   public class UpdateWidgetService extends Service {
private static final String TAG = UpdateWidgetService.class.getSimpleName();

@Override
public IBinder onBind(Intent arg0) {
    return null;
}

@Override
public void onStart(Intent intent, int startId) {
    super.onStart(intent, startId);

    Log.d(TAG, "onStart started");

    // Create some random data
    Random random = new Random();

    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this.getApplicationContext());

    int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);

    if (appWidgetIds.length > 0) {

        for (int widgetId : appWidgetIds) {
            List<String> qList = getListFromTxtFile("quotes.txt");
            int nextInt = random.nextInt(qList.size());

            RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget);
            remoteViews.setTextViewText(R.id.widget_textview, qList.get(nextInt));
            appWidgetManager.updateAppWidget(widgetId, remoteViews);
        }
        stopSelf();
    }
    super.onStart(intent, startId);
}

public List<String> getListFromTxtFile(String txtFileName){

//  File sdcard = Environment.getExternalStorageDirectory();
// Get the text file
// File file = new File(sdcard,txtFileName);

AssetManager am = this.getAssets();

List<String> qList = new ArrayList<String>();

//Read text from file

try {
    InputStream is = am.open("quotes.txt");
          //BufferedReader br = new BufferedReader(new FileReader(file));
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    String line;

     // get data in text file line by line
    while ((line = br.readLine()) != null) {

        Log.d("line",line);

       qList.add(line);
    }
}
catch (IOException e) {
    //You'll need to add proper error handling here

    {Log.d("Error","There are an error");}
}
return qList;

}

   }

Widget.xml 

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="160dp"
android:orientation="vertical"
android:background="@drawable/widget_frame3"
android:layout_gravity="center">

<TextView
    android:id="@+id/widget_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="left|center_horizontal"
    android:layout_marginLeft="80dp"
    android:layout_marginRight="10dp"
    android:layout_marginTop="30dp"
    android:padding="10dip"
    android:scrollbars="vertical"
    android:text="@string/widget_text"
    android:textColor="@android:color/white" />

<TextView
    android:id="@+id/widget_textview2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="left|center_horizontal"
    android:layout_marginLeft="80dp"
    android:layout_marginRight="10dp"
    android:layout_marginTop="20dp"
    android:padding="10dip"
    android:scrollbars="vertical"
    android:text="@string/widget_text2"
    android:textColor="@android:color/white" />

    </LinearLayout>
解决方案

I Think you can not create a text view in a widget. Only tap and touch is possible in the widget

这篇关于Android小工具：添加一个新的项目（＆QUOT;作者＆QUOT;）的TextView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

10-31 14:11
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