1.7 检查更新

app/build.gradle.kts

@@ -18,8 +18,8 @@ android {
         applicationId = "net.bluemangoo.indpjsk"
         minSdk = appMinSdk
         targetSdk = 37
-        versionCode = 7
+        versionCode = 8
-        versionName = "1.6"
+        versionName = "1.7"
 
     }
 

app/src/main/java/net/bluemangoo/indpjsk/data/UpdateChecker.kt

@@ -0,0 +1,88 @@
+package net.bluemangoo.indpjsk.data
+
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import net.bluemangoo.indpjsk.BuildConfig
+import org.json.JSONObject
+import java.net.HttpURLConnection
+import java.net.URL
+import java.util.concurrent.atomic.AtomicBoolean
+
+data class UpdateInfo(
+    val latestVersion: String,
+    val downloadUrl: String,
+)
+
+object UpdateChecker {
+    const val DOWNLOAD_URL = "https://indpjsk.bluemangoo.net/download?source=app_update"
+    private const val LATEST_URL = "https://indpjsk.bluemangoo.net/latest"
+
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+    private val started = AtomicBoolean(false)
+
+    private val _update = MutableStateFlow<UpdateInfo?>(null)
+
+    val update: StateFlow<UpdateInfo?> = _update.asStateFlow()
+
+    fun ensureChecked() {
+        if (!started.compareAndSet(false, true)) return
+        scope.launch {
+            runCatching { fetchLatestVersion() }
+                .onSuccess { latest ->
+                    if (latest != null && isNewer(latest, BuildConfig.VERSION_NAME)) {
+                        _update.value = UpdateInfo(latest, DOWNLOAD_URL)
+                    }
+                }
+                .onFailure {
+                    started.set(false)
+                }
+        }
+    }
+
+    private fun fetchLatestVersion(): String? {
+        val conn = URL(LATEST_URL).openConnection() as HttpURLConnection
+        try {
+            conn.instanceFollowRedirects = true
+            conn.connectTimeout = 10_000
+            conn.readTimeout = 15_000
+            if (conn.responseCode != 200) return null
+            val body = conn.inputStream.bufferedReader().use { it.readText() }.trim()
+            if (body.isEmpty()) return null
+            if (body.startsWith("{")) {
+                return JSONObject(body).optString("tag").trim().takeIf { it.isNotEmpty() }
+            }
+            return body
+        } finally {
+            conn.disconnect()
+        }
+    }
+
+    internal fun isNewer(remote: String, current: String): Boolean {
+        fun parts(v: String): List<String> = v.trim()
+            .removePrefix("v")
+            .removePrefix("V")
+            .split('.', '-', '+', '_')
+            .filter { it.isNotEmpty() }
+
+        val r = parts(remote)
+        val c = parts(current)
+        for (i in 0 until maxOf(r.size, c.size)) {
+            val rs = r.getOrNull(i) ?: ""
+            val cs = c.getOrNull(i) ?: ""
+            val rn = rs.toIntOrNull()
+            val cn = cs.toIntOrNull()
+            if (rn != null && cn != null) {
+                if (rn != cn) return rn > cn
+            } else {
+                val cmp = rs.compareTo(cs, ignoreCase = true)
+                if (cmp != 0) return cmp > 0
+            }
+        }
+        return false
+    }
+}

app/src/main/java/net/bluemangoo/indpjsk/ui/AboutScreen.kt

@@ -1,26 +1,18 @@
 package net.bluemangoo.indpjsk.ui
 
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.*
-import androidx.compose.material3.HorizontalDivider
+import androidx.compose.runtime.*
-import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.material3.TopAppBar
-import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.*
 import androidx.compose.ui.unit.dp
 import net.bluemangoo.indpjsk.BuildConfig
 import net.bluemangoo.indpjsk.R
+import net.bluemangoo.indpjsk.data.UpdateChecker
+import net.bluemangoo.indpjsk.ui.theme.indPjskCustomColor
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -28,6 +20,9 @@ fun AboutScreen(
     readme: String,
     onBack: () -> Unit,
 ) {
+    val update by UpdateChecker.update.collectAsState()
+    LaunchedEffect(Unit) { UpdateChecker.ensureChecked() }
+
     Scaffold(
         topBar = {
             TopAppBar(
@@ -54,6 +49,10 @@ fun AboutScreen(
                 text = "Version ${BuildConfig.VERSION_NAME} (${BuildConfig.VERSION_CODE})",
                 style = MaterialTheme.typography.titleMedium
             )
+            update?.let { info ->
+                Spacer(Modifier.height(4.dp))
+                UpdateLine(info.latestVersion)
+            }
             Spacer(Modifier.height(8.dp))
             HorizontalDivider()
             Spacer(Modifier.height(8.dp))
@@ -65,3 +64,30 @@ fun AboutScreen(
         }
     }
 }
+
+@Composable
+private fun UpdateLine(version: String) {
+    val warning = indPjskCustomColor().warning
+    val text = remember(version) {
+        buildAnnotatedString {
+            withStyle(SpanStyle(color = warning)) {
+                append("发现新的版本 $version，")
+            }
+            withLink(
+                LinkAnnotation.Url(
+                    url = UpdateChecker.DOWNLOAD_URL,
+                )
+            ) {
+                append("点击")
+            }
+            withStyle(SpanStyle(color = warning)) {
+                append("下载")
+            }
+        }
+    }
+    Text(
+        text = text,
+        style = MaterialTheme.typography.bodyMedium,
+        softWrap = true
+    )
+}

app/src/main/java/net/bluemangoo/indpjsk/ui/theme/Color.kt

@@ -9,3 +9,6 @@ val Pink80 = Color(0xFFEFB8C8)
 val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
 val Pink40 = Color(0xFF7D5260)
+
+val Warning = Color(0xFFD97706)
+val WarningDark = Color(0xFFFBBF24)

app/src/main/java/net/bluemangoo/indpjsk/ui/theme/Theme.kt

@@ -4,8 +4,28 @@ import android.os.Build
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.*
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 
+data class CustomColorScheme(
+    val warning: Color,
+)
+
+private val customLightColorScheme = CustomColorScheme(
+    warning = Warning,
+)
+
+private val customDarkColorScheme = CustomColorScheme(
+    warning = WarningDark,
+)
+
+@Composable
+fun indPjskCustomColor(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+): CustomColorScheme {
+    return if (darkTheme) customDarkColorScheme else customLightColorScheme
+}
+
 private val DarkColorScheme = darkColorScheme(
     primary = Purple80,
     secondary = PurpleGrey80,