पिछली रिलीज़ की तरह, Android 17 में भी कुछ ऐसे बदलाव किए गए हैं जिनसे आपके ऐप्लिकेशन पर असर पड़ सकता है. यहां दिए गए बदलाव, सिर्फ़ उन ऐप्लिकेशन पर लागू होते हैं जो Android 17 या इसके बाद के वर्शन को टारगेट कर रहे हैं. अगर आपका ऐप्लिकेशन, Android 17 या इसके बाद के वर्शन को टारगेट कर रहा है, तो आपको अपने ऐप्लिकेशन में बदलाव करना चाहिए, ताकि वह इन बदलावों के साथ काम कर सके.
Android 17 पर चलने वाले सभी ऐप्लिकेशन पर असर डालने वाले बदलावों की सूची भी ज़रूर देखें. इससे कोई फ़र्क़ नहीं पड़ता कि आपके ऐप्लिकेशन का targetSdkVersion क्या है.
मुख्य फ़ंक्शन
Android 17 में ये बदलाव शामिल हैं. इनसे Android सिस्टम की कई मुख्य क्षमताओं में बदलाव होता है या उन्हें बढ़ाया जाता है.
MessageQueue को बिना लॉक किए लागू करने की नई सुविधा
Beginning with Android 17, apps targeting Android 17
or higher receive a new lock-free implementation of
android.os.MessageQueue. The new implementation improves performance and
reduces missed frames, but may break clients that reflect on MessageQueue
private fields and methods.
For more information, including mitigation strategies, see MessageQueue behavior change guidance.
सुलभता
Android 17 में, सुलभता को बेहतर बनाने के लिए ये बदलाव किए गए हैं.
फ़िज़िकल कीबोर्ड से टाइप करने के लिए, जटिल IME की सुलभता से जुड़ी सहायता
This feature introduces new AccessibilityEvent and TextAttribute
APIs to enhance screen reader spoken feedback for CJKV language input. CJKV IME
apps can now signal whether a text conversion candidate has been selected during
text composition. Apps with edit fields can specify text change types when
sending text changed accessibility events.
For example, apps can specify that a text change occurred during text
composition, or that a text change resulted from a commit.
Doing this enables accessibility
services such as screen readers to deliver more precise feedback based on the
nature of the text modification.
App adoption
IME Apps: When setting composing text in edit fields, IMEs can use
TextAttribute.Builder.setTextSuggestionSelected()to indicate whether a specific conversion candidate was selected.Apps with Edit Fields: Apps that maintain a custom
InputConnectioncan retrieve candidate selection data by callingTextAttribute.isTextSuggestionSelected(). These apps should then callAccessibilityEvent.setTextChangeTypes()when dispatchingTYPE_VIEW_TEXT_CHANGEDevents. Apps targeting Android 17 that use the standardTextViewwill have this feature enabled by default. (That is,TextViewwill handle retrieving data from the IME and setting text change types when sending events to accessibility services).Accessibility Services: Accessibility services that process
TYPE_VIEW_TEXT_CHANGEDevents can callAccessibilityEvent.getTextChangeTypes()to identify the nature of the modification and adjust their feedback strategies accordingly.
सुरक्षा
Android 17 में, डिवाइस और ऐप्लिकेशन की सुरक्षा को बेहतर बनाने के लिए ये बदलाव किए गए हैं.
गतिविधि की सुरक्षा
In Android 17, the platform continues its shift toward a "secure-by-default" architecture, introducing a suite of enhancements designed to mitigate high-severity exploits such as phishing, interaction hijacking, and confused deputy attacks. This update requires developers to explicitly opt in to new security standards to maintain app compatibility and user protection.
Key impacts for developers include:
- BAL hardening & improved opt-in: We are refining Background Activity
Launch (BAL) restrictions by extending protections to
IntentSender. Developers must migrate away from the legacyMODE_BACKGROUND_ACTIVITY_START_ALLOWEDconstant. Instead, you should adopt granular controls likeMODE_BACKGROUND_ACTIVITY_START_ALLOW_IF_VISIBLE, which restricts activity starts to scenarios where the calling app is visible, significantly reducing the attack surface. - Adoption tools: Developers should utilize strict mode and updated lint checks to identify legacy patterns and ensure readiness for future target SDK requirements.
लोकल होस्ट के लिए सुरक्षा सुविधाएं
To improve platform security and user privacy, Android 17
introduces a new install-time permission, USE_LOOPBACK_INTERFACE. This change
restricts cross-app and cross-profile communication over the loopback interface
(for example, 127.0.0.1 or ::1), which was previously implicitly allowed
with the INTERNET permission. For apps targeting
Android 17 or higher, the following rules apply:
- Mutual consent required: cross-app and cross-profile communication is
now blocked by default. For a connection to succeed, both the sending app
and the receiving app must explicitly declare the
USE_LOOPBACK_INTERFACEpermission in their manifests. - Intra-app traffic exempt: Loopback communication within the same app (intra-app communication) remains unaffected and does not require this new permission.
- Target SDK behavior:
- App targets Android 17 or higher: The permission
must be explicitly requested. If it is missing, socket operations (such
as TCP connect or UDP send) fail, typically returning an
EPERM(operation not permitted) error. - App targets API level 36 or lower: The permission is
treated as a split permission on
INTERNET. Apps targeting lower API levels are auto-granted this permission if they holdINTERNET.
- App targets Android 17 or higher: The permission
must be explicitly requested. If it is missing, socket operations (such
as TCP connect or UDP send) fail, typically returning an
- Compatibility warning: If a receiving app updates its target to Android 17 but fails to request this permission, incoming connections from other apps are be rejected, even if the sending app targets a lower API level.
डिफ़ॉल्ट रूप से सीटी चालू करें
If an app targets Android 17 or higher, certificate transparency (CT) is enabled by default. (On Android 16, CT is available but apps had to opt in.)
ज़्यादा सुरक्षित नेटिव DCL—C
If your app targets Android 17 or higher, the Safer Dynamic Code Loading (DCL) protection introduced in Android 14 for DEX and JAR files now extends to native libraries.
All native files loaded using System.load() must be marked as read-only.
Otherwise, the system throws UnsatisfiedLinkError.
We recommend that apps avoid dynamically loading code whenever possible, as doing so greatly increases the risk that an app can be compromised by code injection or code tampering.
डिवाइस के नाप या आकार
Android 17 में, डिवाइस के अलग-अलग साइज़ और फ़ॉर्म फ़ैक्टर के हिसाब से उपयोगकर्ता अनुभव को बेहतर बनाने के लिए, ये बदलाव किए गए हैं.
बड़ी स्क्रीन (sw>=600dp) पर ओरिएंटेशन, साइज़ बदलने, और आसपेक्ट रेशियो (लंबाई-चौड़ाई का अनुपात) से जुड़ी पाबंदियों को अनदेखा करने के लिए, प्लैटफ़ॉर्म एपीआई में बदलाव
We introduced Platform API changes in Android 16 to ignore orientation, aspect ratio, and resizability restrictions on large screens (sw >= 600dp) for apps targeting API level 36 or higher. Developers have the option to opt out of these changes with SDK 36, but this opt-out will no longer be available for apps that target Android 17 or higher.
For more information, see Restrictions on orientation and resizability are ignored.