Kon*_*Kon 55 android android-intent
我想利用内置的意图选择器来显示自定义过滤的应用列表,供用户选择和启动.
我知道如何获取已安装的软件包列表:
final Intent myIntent = new Intent(android.content.Intent.ACTION_MAIN);
List<ResolveInfo> resInfoList = getPackageManager().queryIntentActivities(myIntent, 0);
此时,我想根据包名称中包含的特定字符串(或字符串的变体)过滤列表,我也可以弄清楚如何操作.
但是这里我被卡住了.据我所知,Intent.createChooser()只需要一个目标Intent作为参数.我希望有一个重载基于包和类名或其他东西的意图列表.但我没有看到类似的东西.我在某处错过了吗？
所以问题是,这可能与内置选择器有关,还是我必须使用AlertDialog Builder构建自己的选择器？我希望避免后者.
提前致谢.
小智 106
这是我掀起的解决方案.我使用它为选择器中的每个选择提供不同的意图数据,但您也可以轻松地从列表中删除意图.希望这可以帮助:
List<Intent> targetedShareIntents = new ArrayList<Intent>();
Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
shareIntent.setType("text/plain");
List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(shareIntent, 0);
if (!resInfo.isEmpty()) {
for (ResolveInfo resolveInfo : resInfo) {
String packageName = resolveInfo.activityInfo.packageName;
Intent targetedShareIntent = new Intent(android.content.Intent.ACTION_SEND);
targetedShareIntent.setType("text/plain");
targetedShareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "subject to be shared");
if (TextUtils.equals(packageName, "com.facebook.katana")) {
targetedShareIntent.putExtra(android.content.Intent.EXTRA_TEXT, "http://link-to-be-shared.com");
} else {
targetedShareIntent.putExtra(android.content.Intent.EXTRA_TEXT, "text message to shared");
}
targetedShareIntent.setPackage(packageName);
targetedShareIntents.add(targetedShareIntent);
}
Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(0), "Select app to share");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[targetedShareIntents.size()]));
startActivity(chooserIntent);
}
编辑
在使用这种方法时,我将一些应用程序的名称作为android系统.如果有人得到这个错误请在之前添加以下行targetedShareIntents.add(targetedShareIntent);
targetedShareIntent.setClassName(
resolveInfo.activityInfo.packageName,
resolveInfo.activityInfo.name);
来源:Android分享意图Twitter:如何仅通过推文或直接消息分享？
Mic*_*ael 25
选择器的唯一附加参数是Intent.EXTRA_INITIAL_INTENTS.它的描述是:
一个Parcelable []的Intent或LabeledIntent对象,使用putExtra(String,Parcelable [])设置其他活动,以便在向用户显示ACTION_CHOOSER时放置选项列表的前面.
我没有在Android源代码中找到任何方法从列表中排除其他活动,因此似乎无法使用选择器执行您想要执行的操作.
编辑:这很容易找到.只需检查ChooserActivity和ResolverActivity源代码即可.这些课程相当小.
我做了一个小修改,以获得您想要通过名称共享的应用程序列表.它几乎就是您已发布的内容,但添加的应用程序按名称共享
String[] nameOfAppsToShareWith = new String[] { "facebook", "twitter", "gmail" };
String[] blacklist = new String[]{"com.any.package", "net.other.package"};
// your share intent
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, "some text");
intent.putExtra(android.content.Intent.EXTRA_SUBJECT, "a subject");
// ... anything else you want to add invoke custom chooser
startActivity(generateCustomChooserIntent(intent, blacklist));
private Intent generateCustomChooserIntent(Intent prototype,
String[] forbiddenChoices)
{
List<Intent> targetedShareIntents = new ArrayList<Intent>();
List<HashMap<String, String>> intentMetaInfo = new ArrayList<HashMap<String, String>>();
Intent chooserIntent;
Intent dummy = new Intent(prototype.getAction());
dummy.setType(prototype.getType());
List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(dummy,0);
if (!resInfo.isEmpty())
{
for (ResolveInfo resolveInfo : resInfo)
{
if (resolveInfo.activityInfo == null
|| Arrays.asList(forbiddenChoices).contains(
resolveInfo.activityInfo.packageName))
continue;
//Get all the posible sharers
HashMap<String, String> info = new HashMap<String, String>();
info.put("packageName", resolveInfo.activityInfo.packageName);
info.put("className", resolveInfo.activityInfo.name);
String appName = String.valueOf(resolveInfo.activityInfo
.loadLabel(getPackageManager()));
info.put("simpleName", appName);
//Add only what we want
if (Arrays.asList(nameOfAppsToShareWith).contains(
appName.toLowerCase()))
{
intentMetaInfo.add(info);
}
}
if (!intentMetaInfo.isEmpty())
{
// sorting for nice readability
Collections.sort(intentMetaInfo,
new Comparator<HashMap<String, String>>()
{
@Override public int compare(
HashMap<String, String> map,
HashMap<String, String> map2)
{
return map.get("simpleName").compareTo(
map2.get("simpleName"));
}
});
// create the custom intent list
for (HashMap<String, String> metaInfo : intentMetaInfo)
{
Intent targetedShareIntent = (Intent) prototype.clone();
targetedShareIntent.setPackage(metaInfo.get("packageName"));
targetedShareIntent.setClassName(
metaInfo.get("packageName"),
metaInfo.get("className"));
targetedShareIntents.add(targetedShareIntent);
}
String shareVia = getString(R.string.offer_share_via);
String shareTitle = shareVia.substring(0, 1).toUpperCase()
+ shareVia.substring(1);
chooserIntent = Intent.createChooser(targetedShareIntents
.remove(targetedShareIntents.size() - 1), shareTitle);
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
targetedShareIntents.toArray(new Parcelable[] {}));
return chooserIntent;
}
}
return Intent.createChooser(prototype,
getString(R.string.offer_share_via));
}
它与Makibo发布的解决方案几乎相同,但只需添加一个名称即可轻松选择您想要分享的应用程序,这样您就不会有任何问题,以防他们更改包名或类似名称这个.只要他们不改名字.
我的自定义开放选择器的实现.
特征:
public static Intent createOpenFileIntent(Context context, String pathToFile) {
File file = new File(pathToFile);
String extension = extensionFromName(file.getName());
String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
if (mimeType == null) {
//If android doesn't know extension we can check our own list.
mimeType = KNOWN_MIME_TYPES.get(DataViewHelper.extensionFromName(file.getName()));
}
Intent openIntent = new Intent();
openIntent.setAction(android.content.Intent.ACTION_VIEW);
openIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
openIntent.setDataAndType(Uri.fromFile(file), mimeType);
// 1. Check if there is a default app opener for this type of content.
final PackageManager packageManager = context.getPackageManager();
ResolveInfo defaultAppInfo = packageManager.resolveActivity(openIntent, PackageManager.MATCH_DEFAULT_ONLY);
if (!defaultAppInfo.activityInfo.name.endsWith("ResolverActivity")) {
return openIntent;
}
// 2. Retrieve all apps for our intent. If there are no apps - return usual already created intent.
List<Intent> targetedOpenIntents = new ArrayList<Intent>();
List<ResolveInfo> appInfoList = packageManager.queryIntentActivities(openIntent, PackageManager.MATCH_DEFAULT_ONLY);
if (appInfoList.isEmpty()) {
return openIntent;
}
// 3. Sort in alphabetical order, filter itself and create intent with the rest of the apps.
Collections.sort(appInfoList, new Comparator<ResolveInfo>() {
@Override
public int compare(ResolveInfo first, ResolveInfo second) {
String firstName = packageManager.getApplicationLabel(first.activityInfo.applicationInfo).toString();
String secondName = packageManager.getApplicationLabel(second.activityInfo.applicationInfo).toString();
return firstName.compareToIgnoreCase(secondName);
}
});
for (ResolveInfo appInfo : appInfoList) {
String packageName = appInfo.activityInfo.packageName;
if (packageName.equals(context.getPackageName())) {
continue;
}
Intent targetedOpenIntent = new Intent(android.content.Intent.ACTION_VIEW)
.setDataAndType(Uri.fromFile(file), mimeType)
.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
.setPackage(packageName);
targetedOpenIntents.add(targetedOpenIntent);
}
Intent chooserIntent = Intent.createChooser(targetedOpenIntents.remove(targetedOpenIntents.size() - 1), context.getString(R.string.context_menu_open_in))
.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedOpenIntents.toArray(new Parcelable[] {}));
return chooserIntent;
}
public static String extensionFromName(String fileName) {
int dotPosition = fileName.lastIndexOf('.');
// If extension not present or empty
if (dotPosition == -1 || dotPosition == fileName.length() - 1) {
return "";
} else {
return fileName.substring(dotPosition + 1).toLowerCase(Locale.getDefault());
}
}
| 归档时间： |
|
| 查看次数： |
47431 次 |
| 最近记录： |