public abstract class TokenWatcher
extends Object
| java.lang.Object | |
| android.os.TokenWatcher | |
助手类，帮助您使用IBinder对象作为引用计数令牌。 因为我们发现它们被删除时，IBinder会创建好的令牌
Public constructors |
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TokenWatcher(Handler h, String tag) 构建TokenWatcher |
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公共方法(Public methods) |
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void |
acquire(IBinder token, String tag) 记录该令牌已被获取。 |
abstract void |
acquired() 当有效令牌的数量从0变为1时调用。 |
void |
cleanup(IBinder token, boolean unlink) |
void |
dump(PrintWriter pw) |
void |
dump() |
boolean |
isAcquired() |
void |
release(IBinder token) |
abstract void |
released() 当有效令牌的数量从1变为0时调用。 |
继承方法(Inherited methods) |
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 From class java.lang.Object
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TokenWatcher (Handler h, String tag)
构建TokenWatcher
| 参数(Parameters) | |
|---|---|
h |
Handler: A handler to call acquired() and released() on. If you don't care, just call it like this, although your thread will have to be a Looper thread. new TokenWatcher(new Handler()) |
tag |
String: A debugging tag for this TokenWatcher |
void acquire (IBinder token, String tag)
记录该令牌已被获取。 当调用获取并且当前计数为0时，获取的方法在给定的处理程序上调用。
| 参数(Parameters) | |
|---|---|
token |
IBinder: An IBinder object. If this token has already been acquired, no action is taken. |
tag |
String: A string used by the dump() method for debugging, to see who has references. |
void cleanup (IBinder token, boolean unlink)
| 参数(Parameters) | |
|---|---|
token |
IBinder
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unlink |
boolean
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