我想在Launcher中，直接通过代码来加一个widget，如何做呢？

Question

我的代码如下：错误出现在try里面的mAppWidgetManager.bindAppWidgetId(appWidgetId, xmicIntent.getComponent())； 错误为： ERROR/AndroidRuntime(335): Caused by: java.lang.reflect.InvocationTargetException
请教各位高人，错的原因是什么呢？要如何改呢

Intent xmicIntent = new Intent(Intent.ACTION_MAIN, null);
xmicIntent.addCategory(Intent.CATEGORY_DEFAULT);
mAppWidgetManager = AppWidgetManager.getInstance(this);
List installed = mAppWidgetManager.getInstalledProviders();
String packageName = installed.get(0).provider.getPackageName();
String className = installed.get(0).provider.getClassName();
intent.setClassName(packageName, className);
try {
mAppWidgetManager.bindAppWidgetId(appWidgetId, xmicIntent.getComponent());

                        } catch (IllegalArgumentException e) {

                                Log.v("TEST", "hello-----------------------------------------------------");
                        }
                        addAppWidget(xmicIntent);

Answer 1

[code="java"]
你试试这样吧··
appWidgetId----Widget的id 这个应该取的到吧
Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK); pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);

pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);  

startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);

onActivityResult(Intent intent){

int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
mAppWidgetManager.bindAppWidgetId(mAppWidgetId, intent.getComponent());

}
[/code]