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Add feature versions for devices and apps.

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We're starting to see more instances of device features that will
increment separately from the SDK API level, such as camera HAL,
GPU capabilities, Bluetooth, and other hardware standards.

This change adds the ability for device features to specify a
version, which is defined to be backwards compatible.  That is, apps
requesting an older version of a feature must continue working on
devices with a newer version of that same feature.

When a version is undefined, we assume the default version "0".

Bug: 27162500
Change-Id: If890bf3f3dbb715e8feb80e7059a0d65618482ea
This commit is contained in:
Jeff Sharkey
2016-02-15 17:25:57 -07:00
parent c6ca265902
commit 115d2c189a
22 changed files with 146 additions and 51 deletions
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2
core/java/android/nfc/NfcAdapter.java
View File

@@ -414,7 +414,7 @@ public final class NfcAdapter {
return false;
}
try {
return pm.hasSystemFeature(PackageManager.FEATURE_NFC);
return pm.hasSystemFeature(PackageManager.FEATURE_NFC, 0);
} catch (RemoteException e) {
Log.e(TAG, "Package manager query failed, assuming no NFC feature", e);
return false;

2
core/java/android/nfc/cardemulation/CardEmulation.java
View File

@@ -156,7 +156,7 @@ public final class CardEmulation {
throw new UnsupportedOperationException();
}
try {
if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)) {
if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION, 0)) {
Log.e(TAG, "This device does not support card emulation");
throw new UnsupportedOperationException();
}

2
core/java/android/nfc/cardemulation/NfcFCardEmulation.java
View File

@@ -77,7 +77,7 @@ public final class NfcFCardEmulation {
throw new UnsupportedOperationException();
}
try {
if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION_NFCF)) {
if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION_NFCF, 0)) {
Log.e(TAG, "This device does not support NFC-F card emulation");
throw new UnsupportedOperationException();
}