see 03/11 log

Author: Blankj

.travis.yml

@@ -7,8 +7,8 @@ android:
     - tools
     - platform-tools
     - tools
-    - build-tools-26.0.2
-    - android-26
+    - build-tools-27.0.0
+    - android-27
 
   licenses:
     - 'android-sdk-license-.+'

build.gradle

@@ -30,10 +30,10 @@ task clean(type: Delete) {
 
 ext {
     // Sdk and tools
-    compile_sdk_version = 26
-    build_tools_version = '26.0.0'
+    compile_sdk_version = 27
+    build_tools_version = '27.0.0'
     min_sdk_version = 14
-    target_sdk_version = 26
+    target_sdk_version = 27
 
     version_code = 1_013_003
     version_name = '1.13.3'// E.g 1.9.72 => 1,009,072

utilcode/src/main/java/com/blankj/utilcode/util/DeviceUtils.java

@@ -113,8 +113,8 @@ public static String getMacAddress() {
     @SuppressLint({"HardwareIds", "MissingPermission"})
     private static String getMacAddressByWifiInfo() {
         try {
-            @SuppressLint("WifiManagerLeak")
-            WifiManager wifi = (WifiManager) Utils.getApp().getSystemService(Context.WIFI_SERVICE);
+            Context context = Utils.getApp().getApplicationContext();
+            WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
             if (wifi != null) {
                 WifiInfo info = wifi.getConnectionInfo();
                 if (info != null) return info.getMacAddress();
@@ -197,8 +197,9 @@ private static String getMacAddressByFile() {
             if (name != null) {
                 result = ShellUtils.execCmd("cat /sys/class/net/" + name + "/address", false);
                 if (result.result == 0) {
-                    if (result.successMsg != null) {
-                        return result.successMsg;
+                    String address = result.successMsg;
+                    if (address != null && address.length() > 0) {
+                        return address;
                     }
                 }
             }

utilcode/src/main/java/com/blankj/utilcode/util/ProcessUtils.java

@@ -64,10 +64,10 @@ public static String getForegroundProcessName() {
             Log.i("ProcessUtils", list.toString());
             if (list.size() <= 0) {
                 Log.i("ProcessUtils",
-                        "getForegroundProcessName() called" + ": 无\"有权查看使用权限的应用\"选项");
+                        "getForegroundProcessName: noun of access to usage information.");
                 return null;
             }
-            try {// 有"有权查看使用权限的应用"选项
+            try {// Access to usage information.
                 ApplicationInfo info =
                         pm.getApplicationInfo(Utils.getApp().getPackageName(), 0);
                 AppOpsManager aom =
@@ -82,7 +82,8 @@ public static String getForegroundProcessName() {
                     if (aom.checkOpNoThrow(AppOpsManager.OPSTR_GET_USAGE_STATS,
                             info.uid,
                             info.packageName) != AppOpsManager.MODE_ALLOWED) {
-                        Log.i("ProcessUtils", "没有打开\"有权查看使用权限的应用\"选项");
+                        Log.i("ProcessUtils",
+                                "getForegroundProcessName: refuse to device usage stats.");
                         return null;
                     }
                 }

utilcode/src/main/java/com/blankj/utilcode/util/Utils.java

@@ -34,7 +34,7 @@ public final class Utils {
     @SuppressLint("StaticFieldLeak")
     private static Application sApplication;
 
-    static LinkedList<Activity> sActivityList = new LinkedList<>();
+    private static LinkedList<Activity> sActivityList = new LinkedList<>();
 
     private static ActivityLifecycleCallbacks mCallbacks = new ActivityLifecycleCallbacks() {
         @Override
@@ -84,7 +84,7 @@ private Utils() {
      * @param context context
      */
     public static void init(@NonNull final Context context) {
-        Utils.sApplication = ((Application) context.getApplicationContext());
+        Utils.sApplication = (Application) context.getApplicationContext();
         Utils.sApplication.registerActivityLifecycleCallbacks(mCallbacks);
     }