切换到compose 的依赖

Author: xiaoyunfei

app/src/main/java/org/eson/liteble/main/MainActivity.kt

@@ -1,6 +1,12 @@
 package org.eson.liteble.main
 
+import android.os.Bundle
 import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import org.eson.liteble.main.composable.HomeScreen
 
 /**
  * 主界面
@@ -10,6 +16,19 @@ import androidx.activity.ComponentActivity
  * 3、菜单功能
  */
 class MainActivity : ComponentActivity() {
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+ setContent {
+
+ val navController = rememberNavController()
+ NavHost(navController = navController, startDestination = "Home") {
+ composable("Home") { HomeScreen() }
+ composable("detail/{deviceAddress}") {}
+ }
+
+ }
+ }
 // private lateinit var mScanFragment: ScanFragment
 // private lateinit var mDevicesFragment: BondedFragment
 // private var menuRefresh: MenuItem? = null

app/src/main/java/org/eson/liteble/main/composable/HomeScreen.kt

@@ -0,0 +1,37 @@
+package org.eson.liteble.main.composable
+
+import androidx.compose.foundation.layout.wrapContentSize
+import androidx.compose.material.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.tooling.preview.Preview
+
+@Composable
+fun HomeScreen() {
+ Scaffold(
+ topBar = {
+ TopAppBar() {
+ Text(text = "Lite Ble", color = Color.White)
+ Icon(
+ imageVector = Icons.Filled.Settings,
+ contentDescription = "设置",
+ tint = Color.White,
+ modifier = Modifier.wrapContentSize()
+// .align(Alignment.End)
+ )
+ }
+ }
+ ) {
+
+ }
+}
+
+@Preview
+@Composable
+fun PreviewHomeScreen() {
+ HomeScreen()
+}