[英]Hosting widgets in an android launcher
I am making a launcher for android, and I'm stuck at the widget part. 我正在为Android制作一个启动器,我被困在小部件中。 I've been searching for about an hour and a half on the internet trying to figure out how can I host widgets in my application, but no luck.
我一直在互联网上搜索大约一个半小时试图找出如何在我的应用程序中托管小部件,但没有运气。
I have went through some stock launchers and ADW launcher codes but both just have miles of code and this is the first time I'm making a launcher. 我已经浏览了一些库存发射器和ADW启动器代码,但两者都只有几英里的代码,这是我第一次制作启动器。
Could someone please guide me through how can I add widgets into my launcher? 有人可以指导我如何将小部件添加到我的启动器中? Or at least post any links/tutorials?
或者至少发布任何链接/教程? Please explain it since this is my first time.
请解释一下,因为这是我的第一次。
Try this: 试试这个:
final int APPWIDGET_HOST_ID = 2048;
final int REQUEST_PICK_APPWIDGET = 0;
final int REQUEST_CREATE_APPWIDGET = 5;
AppWidgetManager appWidgetManager;
AppWidgetHost appWidgetHost;
// Let user pick a widget from the list of intalled AppWidgets
public void selectWidget()
{
int appWidgetId = this.appWidgetHost.allocateAppWidgetId();
Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
addEmptyData(pickIntent);
startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
}
// For some reason you have to add this empty data, else it won't work
public void addEmptyData(Intent pickIntent)
{
ArrayList<AppWidgetProviderInfo> customInfo =
new ArrayList<AppWidgetProviderInfo>();
pickIntent.putParcelableArrayListExtra(
AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
pickIntent.putParcelableArrayListExtra(
AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
};
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (resultCode == RESULT_OK ) {
if (requestCode == REQUEST_PICK_APPWIDGET) {
configureWidget(data);
}
else if (requestCode == REQUEST_CREATE_APPWIDGET) {
createWidget(data);
}
}
else if (resultCode == RESULT_CANCELED && data != null) {
int appWidgetId =
data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
if (appWidgetId != -1) {
appWidgetHost.deleteAppWidgetId(appWidgetId);
}
}
}
// Show configuration activity of the widget picked by the user
private void configureWidget(Intent data) {
Bundle extras = data.getExtras();
int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
AppWidgetProviderInfo appWidgetInfo =
appWidgetManager.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, REQUEST_CREATE_APPWIDGET);
} else {
createWidget(data);
}
}
// Get an instance of the selected widget as a AppWidgetHostView
public void createWidget(Intent data) {
Bundle extras = data.getExtras();
int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
AppWidgetProviderInfo appWidgetInfo = appWidgetManager.getAppWidgetInfo(appWidgetId);
AppWidgetHostView hostView = appWidgetHost.createView(this, appWidgetId, appWidgetInfo);
hostView.setAppWidget(appWidgetId, appWidgetInfo);
// Add it on the layout you want
myLayout.addView(hostView);
}
// Call this when you want to remove one from your layout
public void removeWidget(AppWidgetHostView hostView) {
appWidgetHost.deleteAppWidgetId(hostView.getAppWidgetId());
// Remove from your layout
myLayout.removeView(hostView);
}
@Override
protected void onStart() {
super.onStart();
appWidgetManager = AppWidgetManager.getInstance(this);
appWidgetHost = new AppWidgetHost(this, APPWIDGET_HOST_ID);
// Start listening to pending intents from the widgets
appWidgetHost.startListening();
}
@Override
protected void onStop() {
super.onStop();
appWidgetHost.stopListening();
}
All you've got to do is call the method selectWidget()
whenever you want to show a list of AppWidgets installed on the device to pick from. 所有你需要做的就是在你想要显示设备上安装的AppWidgets列表时调用方法
selectWidget()
。
This code is a bit of a modified version of the stock Android launcher. 此代码是Android启动器的一个修改版本。
EDIT : 编辑 :
To bind widget IDs, ie make widgets update and respond to user interaction, refer the solution here: Widgets don't respond when re-added through code 要绑定窗口小部件ID,即使窗口小部件更新并响应用户交互,请在此处参考解决方案: 通过代码重新添加窗口小部件时不响应
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