Android 使用意图配置特定的小部件

我有自动添加到启动程序的小部件，但其中一些小部件需要配置，因此我设置了onClick侦听器来获取id和小部件信息，以启动活动来配置小部件，但我遇到的问题是，当我从活动（例如天气小部件）返回时，失败的部分是在create方法中，当我尝试通过小部件id获取appWidgetInfo时，但是id返回了目的。我不知道出了什么问题谁能帮我解决这个问题吗

    AppWidgetManager mAppWidgetManager;
    AppWidgetHost mAppWidgetHost;
    LinearLayout mainlayout;
    ComponentName cn = null;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mainlayout = (LinearLayout) findViewById(R.id.mylauncher);
    mainlayout.setOnClickListener(this);

    mAppWidgetManager = AppWidgetManager.getInstance(this);
    mAppWidgetHost = new AppWidgetHost(this, R.id.APPWIDGET_HOST_ID);

    // search widgets
    searchWidgets();

}





public void searchWidgets() {
    String widget = "com.weather.Weather.widgets.WeatherWidgetProvider4x1";
    try {

        mAppWidgetManager = AppWidgetManager.getInstance(getBaseContext());
        final List<AppWidgetProviderInfo> infos = mAppWidgetManager
                .getInstalledProviders();
        AppWidgetProviderInfo appWidgetInfo = null;
        for (final AppWidgetProviderInfo info : infos) {
            Log.v("Available Widgets", "label " + info.label + " ::"
                    + info.provider.getPackageName() + " / "
                    + info.provider.getClassName());
        }

        for (final AppWidgetProviderInfo info : infos) {
            Log.v("Searching for Widget class",
                    info.provider.getPackageName() + " / "
                            + info.provider.getClassName());

            if (widget.equals(info.provider.getClassName())) {
                String packageName = info.provider.getPackageName()
                        .toString();
                cn = new ComponentName(packageName, widget);
                // found it
                appWidgetInfo = info;
                Log.d("FOUND !!!!!!!!!", "Widget class " + packageName);

                break;
            }

        }

        mAppWidgetHost = new AppWidgetHost(getBaseContext(),
                R.id.APPWIDGET_HOST_ID);

        if (appWidgetInfo == null) {
            Log.d(TAG, cn + " No such widget available returning view");

            // return; // stop here
        } else {

            int appWidgetId = mAppWidgetHost.allocateAppWidgetId();

            AppWidgetHostView hostView = mAppWidgetHost.createView(this,
                    appWidgetId, appWidgetInfo);
            hostView.setAppWidget(appWidgetId, appWidgetInfo);

            AppWidgetHostView hostViewsecond = mAppWidgetHost.createView(
                    this, appWidgetId, appWidgetInfo);
            hostView.setAppWidget(appWidgetId, appWidgetInfo);

            hostView.setId(appWidgetInfo.previewImage);

            Drawable draw = null;
            String packageName = appWidgetInfo.provider.getPackageName();
            try {
                draw = this.getPackageManager().getDrawable(packageName,
                        appWidgetInfo.previewImage,
                        this.getPackageManager().getApplicationInfo(packageName,
                                0));
            } catch (NameNotFoundException e) {
                Log.d(TAG, "drawable not found",e);
            }

            ImageView preViewWigdet = new ImageView(this);
            preViewWigdet.setImageDrawable(draw);
            preViewWigdet.setId(appWidgetInfo.previewImage);


            mainlayout.addView(preViewWigdet);

        }

    } catch (SecurityException securityEx) {
        Log.e("Bind Widget",
                "Error device not rooted,  returning view, Security exception:- ",
                securityEx);

    }
}



@Override
public void onClick(View v) {
    AppWidgetProviderInfo widgetItem = null;
    mAppWidgetHost = new AppWidgetHost(this, R.id.APPWIDGET_HOST_ID);
    int appWidgetId = mAppWidgetHost.allocateAppWidgetId();

    if (view.getClass().equals(ImageView.class)){
    // putting installed Providers in a list
    final List<AppWidgetProviderInfo> infos = mAppWidgetManager
            .getInstalledProviders();
    for (int i = 0; i < infos.size(); i++) {
        if (infos.get(i).previewImage == view.getId()) {
            widgetItem = (AppWidgetProviderInfo) infos.get(i);
        }
    }
    ComponentName cn = new ComponentName(
            widgetItem.provider.getPackageName(),
            widgetItem.provider.getClassName());

    int[] ids;
    ids = mAppWidgetManager.getAppWidgetIds(cn);
    Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);

    intent.setComponent(widgetItem.configure);
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);

    if (widgetItem.configure != null) {
        Log.d(TAG, "widget to be configured " + widgetItem.label);
        ((Activity) this).startActivityForResult(intent,
                R.id.REQUEST_CREATE_APPWIDGET);
    }

}
}



/**
 * If the user has selected an widget, the result will be in the 'data' when
 * this function is called.
 */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d(TAG, "" + resultCode);
    if (resultCode == RESULT_OK) {
        if (requestCode == R.id.REQUEST_PICK_APPWIDGET) {
            configureWidget(data);
        }
        if (requestCode == R.id.REQUEST_CREATE_APPWIDGET) {
            mAppWidgetManager = AppWidgetManager.getInstance(this);
            createWidget(data);
        }
    } else if (resultCode == RESULT_CANCELED && data != null) {
        int appWidgetId = data.getIntExtra(
                AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
        if (appWidgetId != -1) {
            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
        }
    }
}

/**
 * Checks if the widget needs any configuration. If it needs, launches the
 * configuration activity.
 */
private void configureWidget(Intent data) {
    Bundle extras = data.getExtras();
    int appWidgetId = extras
            .getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
    AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager
            .getAppWidgetInfo(appWidgetId);
    if (appWidgetInfo.configure != null) {
        Intent intent = new Intent(
                AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
        intent.setComponent(appWidgetInfo.configure);
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        startActivityForResult(intent, R.id.REQUEST_CREATE_APPWIDGET);
    } else {
        createWidget(data);
    }
}

/**
 * Creates the widget and adds to our view layout.
 */
public void createWidget(Intent data) {
    Bundle extras = data.getExtras();
    int appWidgetId = extras
            .getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);

  //this is where I am having the problem, appWidgetInfo returns null
    AppWidgetProviderInfo appWidgetInfo = this.mAppWidgetManager
            .getAppWidgetInfo(appWidgetId);

    AppWidgetHostView hostView = mAppWidgetHost.createView(this,
            appWidgetId, appWidgetInfo);
    hostView.setAppWidget(appWidgetId, appWidgetInfo);
    mainlayout.addView(hostView);

    Log.i(TAG, "The widget size is: " + appWidgetInfo.minWidth + "*"
            + appWidgetInfo.minHeight);
}

AppWidgetManager-mAppWidgetManager；
AppWidgetHost mAppWidgetHost；
线性布局主布局；
组件名称cn=null；
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
mainlayout=（LinearLayout）findViewById（R.id.mylauncher）；
mainlayout.setOnClickListener（此）；
mAppWidgetManager=AppWidgetManager.getInstance（此）；
mAppWidgetHost=新的AppWidgetHost（这个，R.id.APPWIDGET\u HOST\u id）；
//搜索小部件
searchWidgets（）；
}
公共void searchWidgets（）{
String widget=“com.weather.weather.widgets.WeatherWidgetProvider4x1”；
试一试{
mAppWidgetManager=AppWidgetManager.getInstance（getBaseContext（））；
最终列表infos=mAppWidgetManager
.getInstalledProviders（）；
AppWidgetProviderInfo appWidgetInfo=null；
对于（最终AppWidgetProviderInfo:infos）{
Log.v（“可用小部件”、“标签”+info.label+”：“
+info.provider.getPackageName（）+“/”
+info.provider.getClassName（））；
}
对于（最终AppWidgetProviderInfo:infos）{
Log.v（“搜索小部件类”，
info.provider.getPackageName（）+“/”
+info.provider.getClassName（））；
if（widget.equals（info.provider.getClassName（）））{
字符串packageName=info.provider.getPackageName（）
.toString（）；
cn=新组件名称（packageName、widget）；
//找到了
appWidgetInfo=info；
Log.d（“找到！！！！！！！”，“Widget类”+packageName）；
打破
}
}
mAppWidgetHost=新的AppWidgetHost（getBaseContext（），
R.id.APPWIDGET_HOST_id）；
if（appWidgetInfo==null）{
Log.d（TAG，cn+“没有可用的小部件返回视图”）；
//return；//停在这里
}否则{
int-appWidgetId=mAppWidgetHost.allocateAppWidgetId（）；
AppWidgetHostView hostView=mAppWidgetHost.createView（此，
appWidgetId、appWidgetInfo）；
setAppWidget（appWidgetId，appWidgetInfo）；
AppWidgetHostView hostViewsecond=mAppWidgetHost.createView(
这是（appWidgetId、appWidgetInfo）；
setAppWidget（appWidgetId，appWidgetInfo）；
setId（appWidgetInfo.previewImage）；
可提取提取=空；
字符串packageName=appWidgetInfo.provider.getPackageName（）；
试一试{
draw=this.getPackageManager（）.getDrawable（packageName，
appWidgetInfo.previewImage，
这个.getPackageManager（）.getApplicationInfo（packageName，
0));
}catch（nameNotFounde异常）{
日志d（标签“未找到可提取文件”，e）；
}
ImageView preViewWigdet=新的ImageView（此）；
预览IGDET.setImageDrawable（绘图）；
preViewWigdet.setId（appWidgetInfo.previewImage）；
mainlayout.addView（预览IGDET）；
}
}捕获（SecurityException securityEx）{
Log.e（“绑定小部件”，
错误设备未根目录，返回视图，安全异常：-“，
证券交易所）；
}
}
@凌驾
公共void onClick（视图v）{
AppWidgetProviderInfo widgetItem=null；
mAppWidgetHost=新的AppWidgetHost（这个，R.id.APPWIDGET\u HOST\u id）；
int-appWidgetId=mAppWidgetHost.allocateAppWidgetId（）；
if（view.getClass（）.equals（ImageView.class））{
//将已安装的提供程序放入列表中
最终列表infos=mAppWidgetManager
.getInstalledProviders（）；
对于（int i=0；i