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Android面试,android音视频开发
2022-07-05 19:00:00 【InfoQ】
开头
智能指针
sp<IBinder> result = new BpBinder(handle);
wp<IBinder> result = new BpBinder(handle);
如何解决循环引用问题
智能指针自定义规则
- OBJECT_LIFETIME_STRONG:只有在这个对象内存空间中的强计数器值为 0 的时候才会销毁对象
- OBJECT_LIFETIME_WEAK:只有在这个对象内存空间中的强计数器和弱计数器的值都为 0 的时候才会销毁对象
- OBJECT_LIFETIME_MASK:不管这两个计数器是不是都为 0,都不销毁对象,即与一般指针无异,还是要自己手动去释放对象
题外话
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