Question

我的小部件中有两个按钮，我想调用两个不同的类。这是我的代码示例

    package com.example.test;


import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;

import android.annotation.SuppressLint;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;

//import android.text.format.DateFormat;
import android.util.Log;
//import android.view.View;
//import android.view.View.OnClickListener;

//import android.widget.Button;
//import android.widget.LinearLayout;
import android.widget.RemoteViews;

@SuppressLint("SimpleDateFormat")
public class MainActivity extends AppWidgetProvider {
      SimpleDateFormat df = new SimpleDateFormat("hh:mm:ss");

      public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        final int N = appWidgetIds.length;



       // Log.i("ExampleWidget",  "Updating widgets " + Arrays.asList(appWidgetIds));

        // Perform this loop procedure for each App Widget that belongs to this
        // provider
        for (int i = 0; i < N; i++) {
          int appWidgetId = appWidgetIds[i];

          // Create an Intent to launch ExampleActivity
          Intent intent = new Intent(context, SecondClass.class);
          PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

          // Get the layout for the App Widget and attach an on-click listener
          // to the button
          RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.activity_main);
          views.setOnClickPendingIntent(R.id.button1, pendingIntent);

          Intent intent1 = new Intent(context, ThirdClass.class);
          PendingIntent pending = PendingIntent.getActivity(context, 0, intent1, 0);

          RemoteViews views1 = new RemoteViews(context.getPackageName(), R.layout.activity_main);
          views1.setOnClickPendingIntent(R.id.button2, pending);  

         appWidgetManager.updateAppWidget(appWidgetId, views);
        } 
      } 
    }

清单文件是

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.test"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.test.ThirdClass"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.example.test.SecondClass"
            android:label="@string/name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver android:name="com.example.test.MainActivity" android:label="8 test">
  <intent-filter>
        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />

  </intent-filter>
  <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget1_info" />
</receiver>
    </application>

</manifest>

当我按下button1时，＆＃34; SecondClass.class＆＃34;被调用但按下button2＆＃34; ThirdClass.class＆＃34;不叫。有人能帮帮我吗。 Thnaks

Answer 1

您已创建了第二个RemoteViews对象（称为views1），并为其中一个视图提供了启动ThirdClass的PendingIntent。但是当你更新appwidget时，你会给出第一个RemoteViews（称为views）。显然这些不一样，所以你的小部件中没有PendingIntent可以转到ThirdClass。

我想你想这样做：

int appWidgetId = appWidgetIds[i];

// Get the layout for the App Widget and attach an on-click listener 
// to the button 
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.activity_main);

// Create an Intent to launch SecondClass 
Intent intent = new Intent(context, SecondClass.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
views.setOnClickPendingIntent(R.id.button1, pendingIntent);

// Create an Intent to launch ThirdClass
Intent intent1 = new Intent(context, ThirdClass.class);
PendingIntent pending = PendingIntent.getActivity(context, 0, intent1, 0);
views.setOnClickPendingIntent(R.id.button2, pending);  

appWidgetManager.updateAppWidget(appWidgetId, views);

如何从窗口小部件中的按钮调用类

1 个答案: