在 Android 14（API level 34）及以上版本中，android.speech.SpeechRecognizer 提供了標準的語音識別能力，允許應用透過底層系統或指定的識別服務，將音訊輸入轉換為文字輸出。其主要功能包括：建立識別器實例、偵測系統是否支援識別、啟動/停止識別會話、取消或銷毀識別器，以及透過回呼介面接收識別結果和錯誤訊息。同時，Android 14 針對主執行緒呼叫、前台服務類型聲明等方面強化了行為約束，需要開發者註意避免 ANR 並正確配置服務類型。此外，API 在內網/雲端辨識、持續辨識及電量消耗等方面有侷限，需要根據應用場景選擇適當的實作方式。以下文件將從功能概覽、核心方法、回呼機制、權限與配置、Android 14 特性與限制五個部分進行介紹。
# Flutter build failed on andorid platform
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================
2: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task ':path_provider_android:compileDebugJavaWithJavac'.
> Could not resolve all files for configuration ':path_provider_android:androidJdkImage'.
> Failed to transform core-for-system-modules.jar to match attributes {artifactType=_internal_android_jdk_image, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}.
> Execution failed for JdkImageTransform: D:\Android_SDK\Sdk\platforms\android-35\core-for-system-modules.jar.
> Error while executing process C:\Program Files\Android\Android Studio\jbr\bin\jlink.exe with arguments {--module-path C:\Users\XXXXXXXXX\.gradle\caches\transforms-3\cc12c5242eac95612f50f56c
5a36d784\transformed\output\temp\jmod --add-modules java.base --output C:\Users\XXXXXXXXX\.gradle\caches\transforms-3\cc12c5242eac95612f50f56c5a36d784\transformed\output\jdkImage --disable-plugin syst
em-modules}
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================
BUILD FAILED in 6s
Running Gradle task 'assembleDebug'... 7.6s
┌─ Flutter Fix ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ [!] This is likely due to a known bug in Android Gradle Plugin (AGP) versions less than 8.2.1, when │
│ D:\XXXXXXXXXXXXXXXXX\android\settings.gradle, │
│ in the 'plugins' closure (by the number following "com.android.application"). │
│ Alternatively, if your project was created with an older version of the templates, it is likely │
│ in the buildscript.dependencies closure of the top-level build.gradle: │
│ D:\XXXXXXXXXXXXXXXXX\android\build.gradle, │
│ as the number following "com.android.tools.build:gradle:". │
│ │
│ For more information, see: │
│ https://issuetracker.google.com/issues/294137077 │
│ https://github.com/flutter/flutter/issues/156304 │
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Error: Gradle task assembleDebug failed with exit code 1log:
std::string 是有效的 UTF-8env->NewStringUTF() 只能處理有效的 UTF-8 字符串。如果 transcribeMelBuffer 返回的 std::string 不是 UTF-8，則應該先進行轉換。例如：
std::string result = engine->transcribeMelBuffer(sampleVector);
// 確保 result 是 UTF-8
if (!isValidUTF8(result)) {
return env->NewStringUTF("Error: Invalid UTF-8 output");
}
return env->NewStringUTF(result.c_str()); @Composable
fun SampleSpinner(
list: List<Pair<String, String>>,
preselected: Pair<String, String>,
onSelectionChanged: (selection: Pair<String, String>) -> Unit
) {
var selected by remember { mutableStateOf(preselected) }
var expanded by remember { mutableStateOf(false) } // initial value
Box {
Column {
OutlinedTextField(
value = (selected.second),
onValueChange = { },
label = { Text(text = "My List") },
modifier = Modifier.fillMaxWidth(),
trailingIcon = { Icon(Icons.Outlined.ArrowDropDown, null) },
readOnly = true
)
DropdownMenu(
modifier = Modifier.fillMaxWidth(),
expanded = expanded,
onDismissRequest = { expanded = false },
) {
list.forEach { entry ->
DropdownMenuItem(
modifier = Modifier.fillMaxWidth(),
onClick = {
selected = entry
expanded = false
},
text = {
Text(
text = (entry.second),
modifier = Modifier
.wrapContentWidth()
.align(Alignment.Start)
)
}
)
}
}
}
Spacer(
modifier = Modifier
.matchParentSize()
.background(Color.Transparent)
.padding(10.dp)
.clickable(
onClick = { expanded = !expanded }
)
)
}
}
@Preview(showBackground = true)
@Composable
fun SampleSpinner_Preview() {
MaterialTheme {
val entry1 = Pair("Key1", "Entry1")
val entry2 = Pair("Key2", "Entry2")
val entry3 = Pair("Key3", "Entry3")
SampleSpinner(
listOf(entry1, entry2, entry3),
preselected = entry2,
onSelectionChanged = { selected -> /* do something with selected */ }
)
}
}在 Android 開發的世界中，UI 元件的設計歷來是開發者最重要的工作之一。傳統上，Android 使用 XML 布局來定義界面，然而，這種方法相對繁瑣，且缺乏靈活性。為了解決這些問題，Google 推出了 Jetpack Compose，一個基於 Kotlin 語言的 UI 架構，旨在使 UI 開發更加簡單、直觀、和靈活。
Jetpack Compose 的核心概念是“聲明式 UI”，這意味著開發者只需要描述界面應該是什麼樣的，框架會自動處理 UI 的更新和渲染。這種方式使得代碼更加簡潔且易於維護。
To address the issue of launching an app from another app in Android API level 12 and above, follow these steps:
Add the following to your AndroidManifest.xml:
<manifest>
<queries>
<package android:name="package.of.app.you.wanna.open"/>
</queries>
</manifest>Apktool
dex2jar
JD-GUI