compileSdkVersion
targetSdkVersion
<network-security-config> <debug-overrides> <trust-anchors> <!-- Trust user added CAs while debuggable only --> <certificates src="user" /> </trust-anchors> </domain-config> </network-security-config>
<network-security-config> <domain-config> <domain includeSubdomains="true">internal.example.com</domain> <trust-anchors> <!-- Only trust the CAs included with the app for connections to internal.example.com --> <certificates src="@raw/cas" /> </trust-anchors> </domain-config> </network-security-config>
<network-security-config> <domain-config> <domain includeSubdomains="true">userCaDomain.com</domain> <domain includeSubdomains="true">otherUserCaDomain.com</domain> <trust-anchors> <!-- Trust preinstalled CAs --> <certificates src="system" /> <!-- Additionally trust user added CAs --> <certificates src="user" /> </trust-anchors> </domain-config> </network-security-config>
<network-security-config> <base-config> <trust-anchors> <!-- Trust preinstalled CAs --> <certificates src="system" /> <!-- Additionally trust user added CAs --> <certificates src="user" /> </trust-anchors> </base-config> <domain-config> <domain includeSubdomains="true">sensitive.example.com</domain> <trust-anchors> <!-- Only allow sensitive content to be exchanged with the real server and not any user or admin configured MiTMs --> <certificates src="system" /> <trust-anchors> </domain-config> </network-security-config>
<network-security-config> <base-config> <trust-anchors> <!-- Trust preinstalled CAs --> <certificates src="system" /> <!-- Additionally trust user added CAs --> <certificates src="user" /> </trust-anchors> </base-config> </network-security-config>
$ readelf --dynamic libBroken.so | grep NEEDED 0x00000001 (NEEDED) Shared library: [libnativehelper.so] 0x00000001 (NEEDED) Shared library: [libutils.so] 0x00000001 (NEEDED) Shared library: [libstagefright_foundation.so] 0x00000001 (NEEDED) Shared library: [libmedia_jni.so] 0x00000001 (NEEDED) Shared library: [liblog.so] 0x00000001 (NEEDED) Shared library: [libdl.so] 0x00000001 (NEEDED) Shared library: [libz.so] 0x00000001 (NEEDED) Shared library: [libstdc++.so] 0x00000001 (NEEDED) Shared library: [libm.so] 0x00000001 (NEEDED) Shared library: [libc.so]
platforms/android-API/usr/lib
$ readelf --header libBroken.so | grep 'section headers' Start of section headers: 0 (bytes into file) Size of section headers: 0 (bytes) Number of section headers: 0 $
$ scanelf -qT libTextRel.so libTextRel.so: (memory/data?) [0x15E0E2] in (optimized out: previous simd_broken_op1) [0x15E0E0] libTextRel.so: (memory/data?) [0x15E3B2] in (optimized out: previous simd_broken_op2) [0x15E3B0] [skipped the rest]
$ readelf --dynamic libTextRel.so | grep TEXTREL 0x00000016 (TEXTREL) 0x0 0x0000001e (FLAGS) SYMBOLIC TEXTREL BIND_NOW $
$ readelf --dynamic libSample.so | grep NEEDED 0x00000001 (NEEDED) Shared library: [libm.so] 0x00000001 (NEEDED) Shared library: [libc.so] 0x00000001 (NEEDED) Shared library: [libdl.so] 0x00000001 (NEEDED) Shared library: [C:\Users\build\Android\ci\jni\libBroken.so] $
$ readelf --dynamic libWithSoName.so | grep SONAME 0x0000000e (SONAME) Library soname: [libWithSoName.so] $
-soname
MessagingStyle
setShowWhen(true)
NotificationCompat.Builder
RemoteViews
DecoratedCustomViewStyle
DecoratedMediaCustomViewStyle
setCustomContentView()
Activity
Service
BroadcastReceiver
RemoteInput
Action
// Where should direct replies be put in the intent bundle (can be any string) private static final String KEY_TEXT_REPLY = "key_text_reply"; // Create the RemoteInput specifying this key String replyLabel = getString(R.string.reply_label); RemoteInput remoteInput = new RemoteInput.Builder(KEY_TEXT_REPLY) .setLabel(replyLabel) .build();
addRemoteInput()
setAllowGeneratedReplies(true)
// Add to your action, enabling Direct Reply for it NotificationCompat.Action action = new NotificationCompat.Action.Builder(R.drawable.reply, replyLabel, pendingIntent) .addRemoteInput(remoteInput) .setAllowGeneratedReplies(true) .build();
pendingIntent
RemoteInput.getResultsFromIntent()
private CharSequence getMessageText(Intent intent) { Bundle remoteInput = RemoteInput.getResultsFromIntent(intent); if (remoteInput != null) { return remoteInput.getCharSequence(KEY_TEXT_REPLY); } return null; }
setRemoteInputHistory()
addMessage()
builder.setStyle(new NotificationCompat.MessagingStyle("Me") .setConversationTitle("Team lunch") .addMessage("Hi", timestampMillis1, null) // Pass in null for user. .addMessage("What's up?", timestampMillis2, "Coworker") .addMessage("Not much", timestampMillis3, null) .addMessage("How about lunch?", timestampMillis4, "Coworker"));
BigTextStyle
setGroup()
setGroupSummary(true)
InboxStyle
NotificationCompat
SomeClass.getInstance("SomeAlgorithm", "SomeProvider");
SomeClass.getInstance("SomeAlgorithm");
Cipher.getInstance(“AES/CBC/PKCS5PADDING”); SecureRandom.getInstance(“SHA1PRNG”);
SecretKey key = new SecretKeySpec(keyBytes, "AES");
/* User types in their password: */ String password = "password"; /* Store these things on disk used to derive key later: */ int iterationCount = 1000; int saltLength = 32; // bytes; should be the same size as the output (256 / 8 = 32) int keyLength = 256; // 256-bits for AES-256, 128-bits for AES-128, etc byte[] salt; // Should be of saltLength /* When first creating the key, obtain a salt with this: */ SecureRandom random = new SecureRandom(); byte[] salt = new byte[saltLength]; random.nextBytes(salt); /* Use this to derive the key from the password: */ KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, iterationCount, keyLength); SecretKeyFactory keyFactory = SecretKeyFactory .getInstance("PBKDF2WithHmacSHA1"); byte[] keyBytes = keyFactory.generateSecret(keySpec).getEncoded(); SecretKey key = new SecretKeySpec(keyBytes, "AES");
InsecureSHA1PRNGKeyDerivator
private static SecretKey deriveKeyInsecurely(String password, int keySizeInBytes) { byte[] passwordBytes = password.getBytes(StandardCharsets.US_ASCII); return new SecretKeySpec( InsecureSHA1PRNGKeyDerivator.deriveInsecureKey( passwordBytes, keySizeInBytes), "AES"); }
