java - 如何使用其他应用程序包名称将图像设置为按钮？

Question

我面临如下所述的问题。

我在小部件上只有一个按钮。单击按钮会打开其他应用程序。现在我的问题是如何将打开的应用程序图像分配给小部件中的按钮。请帮助我。

这是我的主类。

{

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

    public class WidgetMainProvider extends  AppWidgetProvider {
    //  Activity a=new Activity();

        public static String GET_ACTION = "Get_Action";

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

            if (GET_ACTION.equals(intent.getAction())) {
                Toast.makeText(context, "onReceiver()", Toast.LENGTH_LONG).show();
            }
        }

        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];
                //Which defines the UI of Widget
                // initializing widget layout
                RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget1);

                Intent intent = new Intent(context, WidgetOneActivity.class);
               // intent.setAction(GET_ACTION);
                PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
                remoteViews.setOnClickPendingIntent(R.id.button,pendingIntent);
                appWidgetManager.updateAppWidget(appWidgetId, remoteViews);

            }}}

这是我的另一个类，我在其中声明了程序包名称，基于该名称它将打开应用程序。

package com.purvotara.example.widget;
    import android.app.Activity;
    import android.content.Intent;
    import android.content.pm.PackageInfo;
    import android.content.pm.PackageManager;
    import android.graphics.drawable.Drawable;
    import android.os.Bundle;

    public class WidgetOneActivity extends Activity {

     /** Called when the activity is first created. */



     @Override
         public void onCreate(Bundle savedInstanceState) {      
         super.onCreate(savedInstanceState);
         PackageInfo pkgInfo=new PackageInfo();
         context.getPackageManager().getApplicationIcon(pkgInfo.packageName);
         Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.drdo.s.a.m.s");       
         startActivity(LaunchIntent);     

          }


    }

也请帮我把动态设置图像到按钮的代码放在哪里。

这是我的 Android。 list

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

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

        <application
            android:icon="@drawable/icon"
            android:label="@string/app_name" >
            <activity
                android:name="com.purvotara.example.widget.WidgetOneActivity"
                android:label="@string/app_name" >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>

            <receiver
                android:name="com.purvotara.example.widget.WidgetMainProvider"
                android:label="@string/widget1name" >
                <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>

请帮帮我极客们，我在等。

Answer 1

据我了解，您正在尝试将另一个应用程序图标分配给您的小部件按钮。你可以试试:

PackageManager packageManager = mContext.getPackageManager();
Drawable icon = packageManager .getApplicationIcon("com.example.yourapp");
button.setBackgroundDrawable(icon);

或

Drawable icon = getPackageManager().getApplicationIcon("com.example.yourapp");
button.setBackgroundDrawable(icon);

我在 WidgetOneActivity 类中添加了以下内容:

 public void onCreate(Bundle savedInstanceState) {      
 super.onCreate(savedInstanceState);

 Button button = null;

//YOU NEED TO INITIALIZE YOUR BUTTON HERE, YOUR BUTTON IS NULL
try {
    Drawable icon;
    icon = getPackageManager().getApplicationIcon("com.drdo.s.a.m.s");
    button.setBackground(icon);
} catch (NameNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

        Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.drdo.s.a.m.s");        
        startActivity(LaunchIntent);     

        }
    });

  }

添加这个后，我的应用程序将关闭。