diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3dad17d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+### tools
+[![](https://jitpack.io/v/mirkowu/tools.svg)](https://jitpack.io/#mirkowu/tools)
+
+
+
+### 使用
+
+```
+implementation "com.github.mirkowu.tools:lib_ble:$ext.tools_version" //蓝牙ble
+implementation "com.github.mirkowu.mvm:lib_util:$ext.mvm_version" //log工具
+```
+[mvm项目](https://github.com/MirkoWu/MVM)
+
+### 功能
+- [x] 蓝牙ble
+- [x] 等
diff --git a/app/build.gradle b/app/build.gradle
index 75011ff..96770b9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -54,6 +54,8 @@ dependencies {
     implementation "com.github.mirkowu.mvm:lib_widget:$ext.mvm_version"
     implementation "com.github.mirkowu.mvm:lib_util:$ext.mvm_version"
     implementation "com.github.mirkowu.mvm:lib_screen:$ext.mvm_version"
+
+//    implementation "com.github.mirkowu.tools:lib_ble:$ext.tools_version"
     implementation project(':lib_ble')
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/mirkowu/mvm/ble/BleActivity.kt b/app/src/main/java/com/mirkowu/mvm/ble/BleActivity.kt
index 5dfe738..1966827 100644
--- a/app/src/main/java/com/mirkowu/mvm/ble/BleActivity.kt
+++ b/app/src/main/java/com/mirkowu/mvm/ble/BleActivity.kt
@@ -118,7 +118,7 @@ class BleActivity : BaseActivity<EmptyMediator>() {
 
                         override fun onPermissionShowRationale(
                             requestCode: Int,
-                            permissions: Array<out String>?
+                            permissions: Array<out String>
                         ) {
                             ToastUtils.showShort("检测到GPS/位置服务功能未开启，请开启 111111")
                             startLeScan()
diff --git a/app/src/main/java/com/mirkowu/mvm/ble/SearchBleActivity.kt b/app/src/main/java/com/mirkowu/mvm/ble/SearchBleActivity.kt
index df3e3a9..9a79e67 100644
--- a/app/src/main/java/com/mirkowu/mvm/ble/SearchBleActivity.kt
+++ b/app/src/main/java/com/mirkowu/mvm/ble/SearchBleActivity.kt
@@ -108,7 +108,7 @@ class SearchBleActivity : BaseActivity<EmptyMediator>() {
 
                         override fun onPermissionShowRationale(
                             requestCode: Int,
-                            permissions: Array<out String>?
+                            permissions: Array<out String>
                         ) {
                             ToastUtils.showShort("检测到GPS/位置服务功能未开启，请开启 111111")
                             startLeScan()
diff --git a/build.gradle b/build.gradle
index 7b50e0c..457f2e6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,9 +33,10 @@ task clean(type: Delete) {
 ext {
     minSdkVersion = 21
     targetSdkVersion = 29
-    compileSdkVersion = 29
+    compileSdkVersion = 30
 
-    mvm_version = '1.0.19'
+    mvm_version = '1.0.20'
+    tools_version = '1.0.0'
     appcompat_version = '1.3.0'
     core_ktx_version = '1.5.0'
     lifecycle_version = '2.3.1'
diff --git a/lib_ble/build.gradle b/lib_ble/build.gradle
index f6bbc6d..87f7853 100644
--- a/lib_ble/build.gradle
+++ b/lib_ble/build.gradle
@@ -30,5 +30,4 @@ dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation "androidx.appcompat:appcompat:$ext.appcompat_version"
     implementation "com.github.mirkowu.mvm:lib_util:$ext.mvm_version"
-    implementation "com.github.mirkowu.mvm:lib_widget:$ext.mvm_version"
 }
\ No newline at end of file
diff --git a/lib_ble/src/main/java/com/mirkowu/lib_ble/BLEService.java b/lib_ble/src/main/java/com/mirkowu/lib_ble/BLEService.java
index 68809ed..a331290 100644
--- a/lib_ble/src/main/java/com/mirkowu/lib_ble/BLEService.java
+++ b/lib_ble/src/main/java/com/mirkowu/lib_ble/BLEService.java
@@ -36,7 +36,6 @@
 import com.mirkowu.lib_util.LogUtil;
 
 import java.util.List;
-import java.util.UUID;
 
 /**
  * Service for managing connection and data communication with a GATT server hosted on a
@@ -76,8 +75,8 @@ public class BLEService extends Service {
 //    public final static UUID UUID_NOTIFY =
 //            UUID.fromString("00002a00-0000-1000-8000-00805f9b34fb");
 //
-    private String UUID_SERVICE="00001800-0000-1000-8000-00805f9b34fb";
-    private String UUID_NOTIFY="00002a00-0000-1000-8000-00805f9b34fb";
+    private String UUID_SERVICE = "00001800-0000-1000-8000-00805f9b34fb";
+    private String UUID_NOTIFY = "00002a00-0000-1000-8000-00805f9b34fb";
 
     public BluetoothGattCharacteristic mNotifyCharacteristic;