Have a look here at all the Android Intents. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Android Download Intent Ask Question. Asked 12 years, 9 months ago. Active 3 years, 9 months ago. Viewed 38k times. Improve this question. Vadim Kotov 7, 8 8 gold badges 45 45 silver badges 60 60 bronze badges.
Isaac Waller Isaac Waller I honestly have no idea what you are asking here, please clarify. To revisit this old question - it is a private intent. And, beacuse it's private thus not usable for us, did you find some kind of alternative on how to download a file? I have the same problem. However, bear in mind that going through with this procedure will also enable all disabled apps, reset any app notification options, remove any background data restrictions or permission restrictions placed on specific apps.
Hit the three-dot menu button in the top-right corner. Tap on Reset app preferences. Confirm by tapping on Reset apps. How to change default apps in Android Keep your phone in check!
Make sure it uses the right apps for the right processes. How To By Edgar Cervantes. How to manage default apps.
Step-by-step instructions to manage default apps: Open the Settings app on your Android phone. If the other intent that receives the copy launches a component that isn't exported , sanitize and validate the extras before copying them to the intent that launches the component.
Don't export your app's components unnecessarily. For example, if you intend to launch an app component using an internal nested intent, set that component's android:exported attribute to false. Use a PendingIntent instead of a nested intent.
That way, when another app unparcels the PendingIntent of its containing Intent , the other app can launch the PendingIntent using the identity of your app. This configuration allows the other app to safely launch any component, including a non-exported component, in your app.
The diagram in figure 2 shows how the system passes control from your client app to another service app, and back to your app:. Figure 2. Diagram of inter-app communication when using a nested pending intent. Each intent filter specifies the type of intents it accepts based on the intent's action, data, and category. The system delivers an implicit intent to your app component only if the intent can pass through one of your intent filters.
Note: An explicit intent is always delivered to its target, regardless of any intent filters the component declares. An app component should declare separate filters for each unique job it can do. For example, one activity in an image gallery app may have two filters: one filter to view an image, and another filter to edit an image. When the activity starts, it inspects the Intent and decides how to behave based on the information in the Intent such as to show the editor controls or not.
This attribute indicates whether the app component is accessible to other apps. Otherwise, it's safer to set this attribute to false.
Warning: If an activity, service, or broadcast receiver in your app uses intent filters and doesn't explicitly set the value for android:exported , your app can't be installed on a device that runs Android 12 or higher. If you do not declare this category in your intent filter, no implicit intents will resolve to your activity.
If you do, you need to be certain that the component can handle any and all combinations of those filter elements. When you want to handle multiple kinds of intents, but only in specific combinations of action, data, and category type, then you need to create multiple intent filters. An implicit intent is tested against a filter by comparing the intent to each of the three elements.
To be delivered to the component, the intent must pass all three tests. If it fails to match even one of them, the Android system won't deliver the intent to the component. However, because a component may have multiple intent filters, an intent that does not pass through one of a component's filters might make it through on another filter.
More information about how the system resolves intents is provided in the section below about Intent Resolution. Caution: Using an intent filter isn't a secure way to prevent other apps from starting your components. Although intent filters restrict a component to respond to only certain kinds of implicit intents, another app can potentially start your app component by using an explicit intent if the developer determines your component names.
If it's important that only your own app is able to start one of your components, do not declare intent filters in your manifest. Instead, set the exported attribute to "false" for that component. Similarly, to avoid inadvertently running a different app's Service , always use an explicit intent to start your own service. Note: For all activities, you must declare your intent filters in the manifest file. However, filters for broadcast receivers can be registered dynamically by calling registerReceiver.
You can then unregister the receiver with unregisterReceiver. Doing so allows your app to listen for specific broadcasts during only a specified period of time while your app is running.
To demonstrate some of the intent filter behaviors, here is an example from the manifest file of a social-sharing app:.
The first activity, MainActivity , is the app's main entry point—the activity that opens when the user initially launches the app with the launcher icon:. The second activity, ShareActivity , is intended to facilitate sharing text and media content. Although users might enter this activity by navigating to it from MainActivity , they can also enter ShareActivity directly from another app that issues an implicit intent matching one of the two intent filters.
A PendingIntent object is a wrapper around an Intent object. The primary purpose of a PendingIntent is to grant permission to a foreign application to use the contained Intent as if it were executed from your app's own process. Just as each Intent object is designed to be handled by a specific type of app component either an Activity , a Service , or a BroadcastReceiver , so too must a PendingIntent be created with the same consideration.
When using a pending intent, your app doesn't execute the intent with a call such as startActivity. Instead, you must declare the intended component type when you create the PendingIntent by calling the respective creator method:.
Unless your app is receiving pending intents from other apps, the above methods to create a PendingIntent are probably the only PendingIntent methods you'll ever need. Each method takes the current app Context , the Intent you want to wrap, and one or more flags that specify how the intent should be used such as whether the intent can be used more than once.
For more information about using pending intents, see the documentation for each of the respective use cases, such as in the Notifications and App Widgets API guides. If your app targets Android 12 or higher, you must specify the mutability of each PendingIntent object that your app creates.
To declare that a given PendingIntent object is mutable or immutable, use the PendingIntent. If your app attempts to create a PendingIntent object without setting either mutability flag, the system throws an IllegalArgumentException , and the following message appears in Logcat :. In most cases, your app should create immutable PendingIntent objects, as shown in the following code snippet. If a PendingIntent object is immutable, then other apps cannot modify the intent to adjust the result of invoking the intent.
However, certain use cases require mutable PendingIntent objects instead:. If your app creates a mutable PendingIntent object, it's strongly recommended that you use an explicit intent and fill in the ComponentName. That way, whenever another app invokes the PendingIntent and passes control back to your app, the same component in your app always starts. To better define how other apps can use your app's pending intents, always wrap a pending intent around an explicit intent.
To help follow this best practice, do the following:. This flag prevents apps that receive a PendingIntent from filling in unpopulated properties. If your app's minSdkVersion is 22 or lower, you can provide safety and compatibility together using the following code:.
When the system receives an implicit intent to start an activity, it searches for the best activity for the intent by comparing it to intent filters based on three aspects:.
The following sections describe how intents are matched to the appropriate components according to the intent filter declaration in an app's manifest file. To pass this filter, the action specified in the Intent must match one of the actions listed in the filter. If the filter does not list any actions, there is nothing for an intent to match, so all intents fail the test.
However, if an Intent does not specify an action, it passes the test as long as the filter contains at least one action. For an intent to pass the category test, every category in the Intent must match a category in the filter. The reverse is not necessary—the intent filter may declare more categories than are specified in the Intent and the Intent still passes.
Therefore, an intent with no categories always passes this test, regardless of what categories are declared in the filter. If you want your activity to receive implicit intents, it must include a category for "android. Each part of the URI is a separate attribute: scheme , host , port , and path :. In this URI, the scheme is content , the host is com. For example:. The rules are as follows:.
This last rule, rule d , reflects the expectation that components are able to get local data from a file or content provider. Therefore, their filters can list just a data type and don't need to explicitly name the content: and file: schemes.
Filters that specify a data type but not a URI are perhaps the most common because most available data is dispensed by content providers. Another common configuration is a filter with a scheme and a data type. Intents are matched against intent filters not only to discover a target component to activate, but also to discover something about the set of components on the device. A match is only successful if the actions and categories in the Intent match against the filter, as described in the documentation for the IntentFilter class.
Your application can use intent matching in a manner similar to what the Home app does. The PackageManager has a set of query For example, queryIntentActivities returns a list of all activities that can perform the intent passed as an argument, and queryIntentServices returns a similar list of services. Neither method activates the components; they just list the ones that can respond.
There's a similar method, queryBroadcastReceivers , for broadcast receivers. Content and code samples on this page are subject to the licenses described in the Content License. App Basics. Build your first app. App resources. Resource types. App manifest file. Device compatibility. Google claims Android is not Linux, but that it is open source, as they support that; Nothing can be further from the truth.
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