ShortSupportMessage can be modified

app/src/main/java/com/binbin/androidowner/Permissions.kt

@@ -6,6 +6,7 @@ import android.content.Context
 import android.content.Intent
 import android.content.Intent.FLAG_ACTIVITY_NEW_TASK
 import android.os.Build.VERSION
+import android.widget.Toast
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
@@ -29,20 +30,21 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.unit.dp
 import androidx.core.content.ContextCompat.startActivity
 import androidx.navigation.NavGraph.Companion.findStartDestination
 import androidx.navigation.NavHostController
 
-
 @Composable
 fun DpmPermissions(myDpm: DevicePolicyManager, myComponent: ComponentName, myContext:Context,navCtrl:NavHostController){
     //da:DeviceAdmin do:DeviceOwner
     val isda = myDpm.isAdminActive(myComponent)
     val isdo = myDpm.isDeviceOwnerApp("com.binbin.androidowner")
+    val focusManager = LocalFocusManager.current
     Column(
         modifier = Modifier
-            .padding(8.dp)
+            .padding(horizontal = 8.dp)
             .verticalScroll(rememberScrollState()),
         horizontalAlignment = Alignment.CenterHorizontally
     ) {
@@ -111,7 +113,17 @@ fun DpmPermissions(myDpm: DevicePolicyManager, myComponent: ComponentName, myCon
         Column(
             horizontalAlignment = Alignment.Start
         ) {
-            if(isdo||isda){Text("注意！在这里撤销权限不会清除配置。比如：被停用的应用会保持停用状态")}
+            if(isdo||isda){
+                Text(
+                    text = "注意！在这里撤销权限不会清除配置。比如：被停用的应用会保持停用状态",
+                    color = MaterialTheme.colorScheme.onErrorContainer,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .clip(RoundedCornerShape(15))
+                        .background(color = MaterialTheme.colorScheme.errorContainer)
+                        .padding(6.dp)
+                )
+            }
             Spacer(Modifier.padding(5.dp))
             if(!isda){
                 Text("你可以在adb shell中使用以下命令激活Device Admin")
@@ -131,11 +143,85 @@ fun DpmPermissions(myDpm: DevicePolicyManager, myComponent: ComponentName, myCon
             }
         }
         if(isdo&&VERSION.SDK_INT>=24){
-            var lockScrInfo by remember { mutableStateOf("") }
-            TextField(value = lockScrInfo, onValueChange = { lockScrInfo= it}, label = { Text("锁屏信息") })
-            Spacer(Modifier.padding(5.dp))
-            Button(onClick = {myDpm.setDeviceOwnerLockScreenInfo(myComponent,lockScrInfo)}) {
-                Text("设置锁屏DeviceOwner信息")
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+                    .clip(RoundedCornerShape(12.dp))
+                    .background(color = MaterialTheme.colorScheme.primaryContainer)
+                    .padding(10.dp)
+            ) {
+                var lockScrInfo by remember { mutableStateOf(myDpm.deviceOwnerLockScreenInfo) }
+                Text(text = "锁屏DeviceOwner信息", style = MaterialTheme.typography.titleLarge)
+                TextField(
+                    value = if(lockScrInfo!=null){lockScrInfo.toString()}else{""},
+                    onValueChange = { lockScrInfo= it},
+                    label = { Text("锁屏信息") },
+                    modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp)
+                )
+                Row {
+                    Button(onClick = {
+                        myDpm.setDeviceOwnerLockScreenInfo(myComponent,lockScrInfo)
+                        lockScrInfo=myDpm.deviceOwnerLockScreenInfo
+                        focusManager.clearFocus()
+                        Toast.makeText(myContext, "成功", Toast.LENGTH_SHORT).show()
+                    }) {
+                        Text("应用")
+                    }
+                    Spacer(Modifier.padding(horizontal = 4.dp))
+                    Button(onClick = {
+                        myDpm.setDeviceOwnerLockScreenInfo(myComponent,null)
+                        lockScrInfo=myDpm.deviceOwnerLockScreenInfo
+                        focusManager.clearFocus()
+                        Toast.makeText(myContext, "成功", Toast.LENGTH_SHORT).show()
+                    }) {
+                        Text("默认")
+                    }
+                }
+            }
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 10.dp)
+                    .clip(RoundedCornerShape(12.dp))
+                    .background(color = MaterialTheme.colorScheme.primaryContainer)
+                    .padding(10.dp)
+            ) {
+                Text(text = "提示消息", style = MaterialTheme.typography.titleLarge)
+                Text(text = "如果你禁用了某个功能，用户尝试使用这个功能时会看见这个消息（可多行）",modifier = Modifier.padding(vertical = 6.dp))
+                var supportMsg by remember{ mutableStateOf(myDpm.getShortSupportMessage(myComponent)) }
+                TextField(
+                    value = if(supportMsg!=null){ supportMsg.toString() }else{""},
+                    label = {Text("提示消息")},
+                    onValueChange = { supportMsg=it },
+                    modifier = Modifier.fillMaxWidth()
+                )
+                Row(
+                    modifier = Modifier.padding(vertical = 6.dp)
+                ) {
+                    Button(
+                        onClick = {
+                            myDpm.setShortSupportMessage(myComponent,supportMsg)
+                            supportMsg=if(myDpm.getShortSupportMessage(myComponent)!=null){ myDpm.getShortSupportMessage(myComponent).toString() }else{""}
+                            focusManager.clearFocus()
+                            Toast.makeText(myContext, "成功", Toast.LENGTH_SHORT).show()
+                        }
+                    ) {
+                        Text(text = "应用")
+                    }
+                    Spacer(Modifier.padding(horizontal = 4.dp))
+                    Button(
+                        onClick = {
+                            myDpm.setShortSupportMessage(myComponent,null)
+                            supportMsg = myDpm.getShortSupportMessage(myComponent)
+                            focusManager.clearFocus()
+                            Toast.makeText(myContext, "成功", Toast.LENGTH_SHORT).show()
+                        }
+                    ) {
+                        Text(text = "默认")
+                    }
+                }
+
             }
         }
     }