weakreference
经常用来解决内存泄漏问题
# case
# Dialog 的状态管理
private static final class ListenersHandler extends Handler {
private final WeakReference<DialogInterface> mDialog;
public ListenersHandler(Dialog dialog) {
mDialog = new WeakReference<>(dialog);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case DISMISS:
((OnDismissListener) msg.obj).onDismiss(mDialog.get());
break;
case CANCEL:
((OnCancelListener) msg.obj).onCancel(mDialog.get());
break;
case SHOW:
((OnShowListener) msg.obj).onShow(mDialog.get());
break;
}
}
}
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handler 内存泄漏经典 case 的写法
上次更新: 2025/10/09, 23:53:03