diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 292fa7a..ea56320 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -67,11 +67,7 @@
         <receiver
         android:name=".PackageInstallerReceiver"
         android:description="@string/app_name"
-        android:permission="android.permission.BIND_DEVICE_ADMIN"
-        android:exported="true">
-            <intent-filter>
-                <action android:name="com.bintianqi.owndroid.PKG_INSTALL_RESULT"/>
-            </intent-filter>
+        android:permission="android.permission.BIND_DEVICE_ADMIN">
         </receiver>
         <provider
             android:name="rikka.shizuku.ShizukuProvider"
diff --git a/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt b/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
index 88f1700..3415c55 100644
--- a/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/MainActivity.kt
@@ -55,12 +55,10 @@ class MainActivity : ComponentActivity() {
         getCaCert = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
             uriToStream(applicationContext,it.data?.data){stream->
                 caCert = stream.readBytes()
-                if(caCert.size>50000){ Toast.makeText(applicationContext, "太大了", Toast.LENGTH_SHORT).show(); caCert = byteArrayOf() }
+                if(caCert.size>5000){ Toast.makeText(applicationContext, R.string.file_too_large, Toast.LENGTH_SHORT).show(); caCert = byteArrayOf() }
             }
         }
-        createManagedProfile = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
-            if(it.resultCode==Activity.RESULT_CANCELED){Toast.makeText(applicationContext, "用户已取消", Toast.LENGTH_SHORT).show()}
-        }
+        createManagedProfile = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {}
         addDeviceAdmin = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
             val myDpm = applicationContext.getSystemService(DEVICE_POLICY_SERVICE) as DevicePolicyManager
             if(myDpm.isAdminActive(ComponentName(applicationContext, Receiver::class.java))){
diff --git a/app/src/main/java/com/bintianqi/owndroid/Receiver.kt b/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
index 6bb6165..f3b7084 100644
--- a/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/Receiver.kt
@@ -7,6 +7,7 @@ import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageInstaller.*
+import android.util.Log
 import android.widget.Toast
 import androidx.activity.ComponentActivity
 import com.bintianqi.owndroid.dpm.isDeviceOwner
@@ -36,19 +37,20 @@ class Receiver : DeviceAdminReceiver() {
 
 class PackageInstallerReceiver:BroadcastReceiver(){
     override fun onReceive(context: Context, intent: Intent) {
-        val toastText = when(intent.getIntExtra(EXTRA_STATUS,666)){
-            STATUS_PENDING_USER_ACTION->"等待用户交互"
-            STATUS_SUCCESS->context.getString(R.string.success)
-            STATUS_FAILURE->context.getString(R.string.fail)
-            STATUS_FAILURE_BLOCKED->"失败：被阻止"
-            STATUS_FAILURE_ABORTED->"失败：被打断"
-            STATUS_FAILURE_INVALID->"失败：无效"
-            STATUS_FAILURE_CONFLICT->"失败：冲突"
-            STATUS_FAILURE_STORAGE->"失败：空间不足"
-            STATUS_FAILURE_INCOMPATIBLE->"失败：不兼容"
-            STATUS_FAILURE_TIMEOUT->"失败：超时"
-            else->context.getString(R.string.unknown)
+        val toastText = when(intent.getIntExtra(EXTRA_STATUS,999)){
+            STATUS_PENDING_USER_ACTION->R.string.status_pending_action
+            STATUS_SUCCESS->R.string.success
+            STATUS_FAILURE->R.string.fail
+            STATUS_FAILURE_BLOCKED->R.string.status_fail_blocked
+            STATUS_FAILURE_ABORTED->R.string.status_fail_aborted
+            STATUS_FAILURE_INVALID->R.string.status_fail_invalid
+            STATUS_FAILURE_CONFLICT->R.string.status_fail_conflict
+            STATUS_FAILURE_STORAGE->R.string.status_fail_storage
+            STATUS_FAILURE_INCOMPATIBLE->R.string.status_fail_incompatible
+            STATUS_FAILURE_TIMEOUT->R.string.status_fail_timeout
+            else->R.string.unknown
         }
-        Toast.makeText(context, toastText, Toast.LENGTH_SHORT).show()
+        Log.e("OwnDroid", intent.getIntExtra(EXTRA_STATUS,999).toString())
+        if(toastText!=999){Toast.makeText(context, toastText, Toast.LENGTH_SHORT).show()}
     }
 }
diff --git a/app/src/main/java/com/bintianqi/owndroid/Utils.kt b/app/src/main/java/com/bintianqi/owndroid/Utils.kt
index fa28348..f3ce70d 100644
--- a/app/src/main/java/com/bintianqi/owndroid/Utils.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/Utils.kt
@@ -18,12 +18,11 @@ fun uriToStream(
         try{
             val stream = context.contentResolver.openInputStream(uri)
             if(stream!=null) { operation(stream) }
-            else{ Toast.makeText(context, "空的流", Toast.LENGTH_SHORT).show() }
             stream?.close()
         }
-        catch(e: FileNotFoundException){ Toast.makeText(context, "文件不存在", Toast.LENGTH_SHORT).show() }
-        catch(e: IOException){ Toast.makeText(context, "IO异常", Toast.LENGTH_SHORT).show() }
-    }else{ Toast.makeText(context, "空URI", Toast.LENGTH_SHORT).show() }
+        catch(e: FileNotFoundException){ Toast.makeText(context, R.string.file_not_exist, Toast.LENGTH_SHORT).show() }
+        catch(e: IOException){ Toast.makeText(context, R.string.io_exception, Toast.LENGTH_SHORT).show() }
+    }
 }
 
 fun List<Any>.toText():String{
diff --git a/app/src/main/java/com/bintianqi/owndroid/dpm/ApplicationManage.kt b/app/src/main/java/com/bintianqi/owndroid/dpm/ApplicationManage.kt
index 5411008..5307148 100644
--- a/app/src/main/java/com/bintianqi/owndroid/dpm/ApplicationManage.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/dpm/ApplicationManage.kt
@@ -632,7 +632,11 @@ private fun PermittedAccessibility(pkgName: String){
         Button(
             onClick = {
                 focusMgr.clearFocus()
-                Toast.makeText(myContext, if(myDpm.setPermittedAccessibilityServices(myComponent, permittedAccessibility)){"成功"}else{"失败"}, Toast.LENGTH_SHORT).show()
+                Toast.makeText(
+                    myContext,
+                    if(myDpm.setPermittedAccessibilityServices(myComponent, permittedAccessibility)){R.string.success}else{R.string.fail},
+                    Toast.LENGTH_SHORT
+                ).show()
                 val getList = myDpm.getPermittedAccessibilityServices(myComponent)
                 if(getList!=null){ permittedAccessibility = getList }
                 listText = permittedAccessibility.toText()
@@ -683,7 +687,11 @@ private fun PermittedIME(pkgName: String){
         Button(
             onClick = {
                 focusMgr.clearFocus()
-                Toast.makeText(myContext, if(myDpm.setPermittedInputMethods(myComponent, permittedIme)){"成功"}else{"失败"}, Toast.LENGTH_SHORT).show()
+                Toast.makeText(
+                    myContext,
+                    if(myDpm.setPermittedInputMethods(myComponent, permittedIme)){R.string.success}else{R.string.fail},
+                    Toast.LENGTH_SHORT
+                ).show()
                 val getList = myDpm.getPermittedInputMethods(myComponent)
                 if(getList!=null){ permittedIme = getList }
                 imeListText = permittedIme.toText()
@@ -901,6 +909,7 @@ private fun installPackage(context: Context, inputStream: InputStream){
     session.fsync(out)
     inputStream.close()
     out.close()
-    val pendingIntent = PendingIntent.getBroadcast(context, sessionId, Intent(context, PackageInstallerReceiver::class.java), PendingIntent.FLAG_IMMUTABLE).intentSender
+    val intent = Intent(context, PackageInstallerReceiver::class.java)
+    val pendingIntent = PendingIntent.getBroadcast(context, sessionId, intent, PendingIntent.FLAG_IMMUTABLE).intentSender
     session.commit(pendingIntent)
 }
diff --git a/app/src/main/java/com/bintianqi/owndroid/dpm/Network.kt b/app/src/main/java/com/bintianqi/owndroid/dpm/Network.kt
index dcffeaa..2793314 100644
--- a/app/src/main/java/com/bintianqi/owndroid/dpm/Network.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/dpm/Network.kt
@@ -792,7 +792,7 @@ private fun APN(){
                             Button(
                                 onClick = {
                                     val success = myDpm.removeOverrideApn(myComponent,id)
-                                    Toast.makeText(myContext, if(success){"成功"}else{"失败"}, Toast.LENGTH_SHORT).show()
+                                    Toast.makeText(myContext, if(success){R.string.success}else{R.string.fail}, Toast.LENGTH_SHORT).show()
                                 },
                                 Modifier.fillMaxWidth(0.96F)
                             ){
diff --git a/app/src/main/java/com/bintianqi/owndroid/dpm/SystemManager.kt b/app/src/main/java/com/bintianqi/owndroid/dpm/SystemManager.kt
index 50a18e3..d4c831e 100644
--- a/app/src/main/java/com/bintianqi/owndroid/dpm/SystemManager.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/dpm/SystemManager.kt
@@ -282,7 +282,7 @@ private fun BugReport(){
         Button(
             onClick = {
                 val result = myDpm.requestBugreport(myComponent)
-                Toast.makeText(myContext, if(result){"成功"}else{"失败"}, Toast.LENGTH_SHORT).show()
+                Toast.makeText(myContext, if(result){R.string.success}else{R.string.fail}, Toast.LENGTH_SHORT).show()
             },
             modifier = Modifier.fillMaxWidth(),
             enabled = isDeviceOwner(myDpm)
@@ -428,7 +428,7 @@ private fun NearbyStreamingPolicy(){
         Button(
             onClick = {
                 myDpm.nearbyAppStreamingPolicy = appPolicy
-                Toast.makeText(myContext, "成功", Toast.LENGTH_SHORT).show()
+                Toast.makeText(myContext, R.string.success, Toast.LENGTH_SHORT).show()
             },
             modifier = Modifier.fillMaxWidth()
         ) {
@@ -844,7 +844,7 @@ private fun SysUpdatePolicy(){
                                 else->null
                             }
                         myDpm.setSystemUpdatePolicy(myComponent,policy)
-                        Toast.makeText(myContext, "成功！", Toast.LENGTH_SHORT).show()
+                        Toast.makeText(myContext, R.string.success, Toast.LENGTH_SHORT).show()
                     },
                     enabled = isDeviceOwner(myDpm),
                     modifier = Modifier.fillMaxWidth()
diff --git a/app/src/main/java/com/bintianqi/owndroid/dpm/UserManager.kt b/app/src/main/java/com/bintianqi/owndroid/dpm/UserManager.kt
index 6d2f89f..d793f57 100644
--- a/app/src/main/java/com/bintianqi/owndroid/dpm/UserManager.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/dpm/UserManager.kt
@@ -302,7 +302,7 @@ private fun CreateUser(){
             onClick = {
                 newUserHandle=myDpm.createAndManageUser(myComponent,userName,myComponent,null,selectedFlag)
                 focusMgr.clearFocus()
-                Toast.makeText(myContext, if(newUserHandle!=null){"成功"}else{"失败"}, Toast.LENGTH_SHORT).show()
+                Toast.makeText(myContext, if(newUserHandle!=null){R.string.success}else{R.string.fail}, Toast.LENGTH_SHORT).show()
             },
             enabled = isDeviceOwner(myDpm),
             modifier = Modifier.fillMaxWidth()
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 8e9e28e..e4f0538 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -43,6 +43,9 @@
     <string name="copy_command">复制代码</string>
     <string name="unknown_status">未知状态</string>
     <string name="copy">复制</string>
+    <string name="file_too_large">文件太大了</string>
+    <string name="file_not_exist">文件不存在</string>
+    <string name="io_exception">IO异常</string>
 
     <!--Permissions-->
     <string name="click_to_activate">点击以激活</string>
@@ -277,6 +280,15 @@
     <string name="select_apk" tools:ignore="TypographyEllipsis">选择APK...</string>
     <string name="silent_install">静默安装</string>
     <string name="request_install">请求安装</string>
+    <string name="app_installer_status">应用安装器：</string>
+    <string name="status_pending_action">等待用户操作</string>
+    <string name="status_fail_blocked">被阻止</string>
+    <string name="status_fail_aborted">被打断</string>
+    <string name="status_fail_invalid">无效APK</string>
+    <string name="status_fail_conflict">冲突</string>
+    <string name="status_fail_storage">空间不足</string>
+    <string name="status_fail_incompatible">不兼容</string>
+    <string name="status_fail_timeout">超时</string>
 
     <!--UserRestriction-->
     <string name="user_restrict">用户限制</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a583b55..9d6f5c3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -46,6 +46,9 @@
     <string name="not_exist">Not exist</string>
     <string name="unknown_status">Unknown status</string>
     <string name="copy">Copy</string>
+    <string name="file_too_large">File too large</string>
+    <string name="file_not_exist">File not exist</string>
+    <string name="io_exception">IO Exception</string>
 
     <!--Permissions-->
     <string name="click_to_activate">Click to activate</string>
@@ -291,6 +294,16 @@
     <string name="select_apk" tools:ignore="TypographyEllipsis">Select APK...</string>
     <string name="silent_install">Silent install</string>
     <string name="request_install">Request install</string>
+    <!--App install session status-->
+    <string name="app_installer_status">App installer:</string>
+    <string name="status_pending_action">Pending user action</string>
+    <string name="status_fail_blocked">Fail: blocked</string>
+    <string name="status_fail_aborted">Fail: aborted</string>
+    <string name="status_fail_invalid">Fail: invalid APK</string>
+    <string name="status_fail_conflict">Fail: conflict</string>
+    <string name="status_fail_storage">Fail: no space</string>
+    <string name="status_fail_incompatible">Fail: incompatible</string>
+    <string name="status_fail_timeout">Fail: timeout</string>
 
     <!--UserRestriction-->
     <string name="user_restrict">User restriction</string>