我可以将已安装的应用程序中的小部件添加到我的应用程序活动中吗 [英] Can I add widgets from installed apps to my application activity

问题描述

我正在尝试为设备开发android应用程序(设备不是平板电脑或手机，它是运行Android 4.1.1的预配置android板)，并且其中一项活动需要显示自定义的仪表板，其中包含多种类型的信息，例如如下图所示

此处显示的信息类型是预先配置的.我计划从头开始开发所有这些应用程序，而不是从头开始开发所有这些应用程序，这些应用程序具有小部件(例如天气和日历)，并且在我的布局中包括小部件.

我参考了以下链接

将小部件添加到我自己的应用程序中.-Android

http://www.anddev.org/appwidgethost_tutorial-t10329.html

我完成了大部分代码.

public class MainActivity extends Activity {


    private AppWidgetManager mAppWidgetManager;
    private AppWidgetHost mAppWidgetHost;
    static final int APPWIDGET_HOST_ID = 2037;
    private AppWidgetHostView widgets[] = new AppWidgetHostView[16];



    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);

        setContentView(r.id.layout_main);


    ****here is where I am stuck??****
        int [] ids = AppWidgetManager.getInstance(context).getAppWidgetIds(name);


        mAppWidgetHost.startListening();

    }

但是卡住的地方是，如何指定窗口小部件管理器以获取所需的特定窗口小部件.假设我对小工具感兴趣 "com.android.deskclock/com.android.alarmclock.AnalogAppWidgetProvider"

请咨询.

---

更新: 我添加了以下代码

 mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
        int appWidgetId = mAppWidgetHost.allocateAppWidgetId();
        ComponentName name = new ComponentName("com.android.deskclock","com.android.alarmclock.AnalogAppWidgetProvider");

        int [] ids = mAppWidgetManager.getAppWidgetIds(name);

        if(ids != null && ids.length>0){
            System.err.println("Number of widget ids :"+ids.length);
            AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(ids[0]);
            appWidgetId = ids[0];
            LinearLayout parent= (LinearLayout) findViewById(R.id.generalDashboardLayout);
            parent.addView(mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo));
        }else{
            System.err.println("Ids is null");
        }

它始终显示"Ids为null"，但找不到要添加到我的视图中的小部件

请帮助

解决方案

最后，我通过使用以下代码解决了该问题

mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
        int appWidgetId = mAppWidgetHost.allocateAppWidgetId();
        ComponentName name = new ComponentName("com.android.deskclock","com.android.alarmclock.AnalogAppWidgetProvider");

        int [] ids = mAppWidgetManager.getAppWidgetIds(name);

        if(ids != null && ids.length>0){
            System.err.println("Number of widget ids :"+ids.length);
            AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(ids[0]);
            appWidgetId = ids[0];
            LinearLayout parent= (LinearLayout) findViewById(R.id.generalDashboardLayout);
            parent.addView(mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo));
        }else{
            System.err.println("Ids is null");
        }

I am trying develop an android application for a device (device is not a tablet or phone, its a preconfigured android board running Android 4.1.1)and one of the activity need to display a customized dashboard of several types of information as shown below

The types of information shown here is preconfigured. Instead of developing all these from scratch, I am planning to install apps that has widgets (like weather and calendar) and include widgets in my Layout.

I refered to the below links

Add widgets into my own application.- Android

http://www.anddev.org/appwidgethost_tutorial-t10329.html

I completed most of my code.

public class MainActivity extends Activity {


    private AppWidgetManager mAppWidgetManager;
    private AppWidgetHost mAppWidgetHost;
    static final int APPWIDGET_HOST_ID = 2037;
    private AppWidgetHostView widgets[] = new AppWidgetHostView[16];



    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);

        setContentView(r.id.layout_main);


    ****here is where I am stuck??****
        int [] ids = AppWidgetManager.getInstance(context).getAppWidgetIds(name);


        mAppWidgetHost.startListening();

    }

But the place where I am stuck is, how do I specify widget manager to get the specific widget I want. Let us say I am interested in the widget "com.android.deskclock/com.android.alarmclock.AnalogAppWidgetProvider"

Please advice.

---

Update: I added the below code

 mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
        int appWidgetId = mAppWidgetHost.allocateAppWidgetId();
        ComponentName name = new ComponentName("com.android.deskclock","com.android.alarmclock.AnalogAppWidgetProvider");

        int [] ids = mAppWidgetManager.getAppWidgetIds(name);

        if(ids != null && ids.length>0){
            System.err.println("Number of widget ids :"+ids.length);
            AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(ids[0]);
            appWidgetId = ids[0];
            LinearLayout parent= (LinearLayout) findViewById(R.id.generalDashboardLayout);
            parent.addView(mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo));
        }else{
            System.err.println("Ids is null");
        }

It always prints "Ids is null" It is not finding the widget to add to my view

Please help

解决方案

Finally I solved the issue by using the below code

mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
        int appWidgetId = mAppWidgetHost.allocateAppWidgetId();
        ComponentName name = new ComponentName("com.android.deskclock","com.android.alarmclock.AnalogAppWidgetProvider");

        int [] ids = mAppWidgetManager.getAppWidgetIds(name);

        if(ids != null && ids.length>0){
            System.err.println("Number of widget ids :"+ids.length);
            AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(ids[0]);
            appWidgetId = ids[0];
            LinearLayout parent= (LinearLayout) findViewById(R.id.generalDashboardLayout);
            parent.addView(mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo));
        }else{
            System.err.println("Ids is null");
        }

这篇关于我可以将已安装的应用程序中的小部件添加到我的应用程序活动中吗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IT屋！