自 2025 年 3 月 27 日起，我們建議您使用 android-latest-release 而非 aosp-main 建構及貢獻 AOSP。詳情請參閱「Android 開放原始碼計畫變更」。
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
NullDevice
public
class
NullDevice
extends StubDevice
DeviceManager 在 IDeviceSelection.nullDeviceRequested() 為 true 時用來分配的預留位置 IDevice
摘要
公用方法 |
|---|
final
boolean
|
isTemporary()
如果裝置是為了呼叫而臨時建立，且應在之後刪除，則傳回 true。
|
欄位
TEMP_NULL_DEVICE_PREFIX
public static final String TEMP_NULL_DEVICE_PREFIX
自動建立的空值裝置命名模式
公用建構函式
NullDevice
public NullDevice (String serial)
NullDevice
public NullDevice (String serial,
boolean isTemporary)
| 參數 |
|---|
serial |
String |
isTemporary |
boolean |
公用方法
isTemporary
public final boolean isTemporary ()
如果裝置是為了呼叫而臨時建立，且應在之後刪除，則傳回 true。
這個頁面中的內容和程式碼範例均受《內容授權》中的授權所規範。Java 與 OpenJDK 是 Oracle 和/或其關係企業的商標或註冊商標。
上次更新時間：2025-07-27 (世界標準時間)。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-07-27 (世界標準時間)。"],[],[],null,["# NullDevice\n==========\n\n\n`\npublic\n\n\nclass\nNullDevice\n`\n\n\n`\n\n\n`\n\n`\n\nextends `[StubDevice](../../../../../../reference/tradefed/com/android/tradefed/device/StubDevice.html)`\n\n\n`\n\n`\n\n\n`\n\n|---|---|----------------------------------------|\n| java.lang.Object |||\n| ↳ | [com.android.tradefed.device.StubDevice](../../../../../../reference/tradefed/com/android/tradefed/device/StubDevice.html) ||\n| | ↳ | com.android.tradefed.device.NullDevice |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nA placeholder [IDevice](../../../../../../reference/tradefed/com/android/ddmlib/IDevice.html) used by [DeviceManager](../../../../../../reference/tradefed/com/android/tradefed/device/DeviceManager.html) to allocate when\n[IDeviceSelection.nullDeviceRequested()](../../../../../../reference/tradefed/com/android/tradefed/device/IDeviceSelection.html#nullDeviceRequested()) is `true`\n\nSummary\n-------\n\n| ### Fields ||\n|-------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` public static final String` | [TEMP_NULL_DEVICE_PREFIX](../../../../../../reference/tradefed/com/android/tradefed/device/NullDevice.html#TEMP_NULL_DEVICE_PREFIX) Naming pattern for auto-created null devices |\n\n| ### Public constructors ||\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[NullDevice](../../../../../../reference/tradefed/com/android/tradefed/device/NullDevice.html#NullDevice(java.lang.String))`(String serial) ` |\n| ` `[NullDevice](../../../../../../reference/tradefed/com/android/tradefed/device/NullDevice.html#NullDevice(java.lang.String,%20boolean))`(String serial, boolean isTemporary) ` |\n\n| ### Public methods ||\n|------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` final boolean` | ` `[isTemporary](../../../../../../reference/tradefed/com/android/tradefed/device/NullDevice.html#isTemporary())`() ` Returns true if the device was created temporarily for the invocation and should be deleted afterward. |\n\nFields\n------\n\n### TEMP_NULL_DEVICE_PREFIX\n\n```\npublic static final String TEMP_NULL_DEVICE_PREFIX\n```\n\nNaming pattern for auto-created null devices\n\n\u003cbr /\u003e\n\nPublic constructors\n-------------------\n\n### NullDevice\n\n```\npublic NullDevice (String serial)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------|-----------------|\n| `serial` | `String` \u003cbr /\u003e |\n\n### NullDevice\n\n```\npublic NullDevice (String serial, \n boolean isTemporary)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|---------------|------------------|\n| `serial` | `String` \u003cbr /\u003e |\n| `isTemporary` | `boolean` \u003cbr /\u003e |\n\nPublic methods\n--------------\n\n### isTemporary\n\n```\npublic final boolean isTemporary ()\n```\n\nReturns true if the device was created temporarily for the invocation and should be deleted\nafterward.\n\n\u003cbr /\u003e\n\n| Returns ||\n|-----------|--------|\n| `boolean` | \u003cbr /\u003e |"]]
