SubmitDialogFragment内存泄露

如何发现内存泄露问题？

通过andriod studio提供的工具，分析Memory,获取一段内存情况之前，记得多点两下强制GC,以便分析的准确些。

分析结果如下图所示：

分析代码，查看内存泄露的根本原因

SubmitDialogFragment类写了如下代码

    companion object {        var submitDialogFragment: SubmitDialogFragment? = null        @JvmStatic        fun newInstance(): SubmitDialogFragment {            val args = Bundle()            submitDialogFragment = SubmitDialogFragment()            submitDialogFragment!!.arguments = args            return submitDialogFragment!! 童年的发现教案       }        fun show(         牧马人 杨坤   fragmentManager: FragmentManager,            confirmListener: ConfirmListener,            content: String? = null        ):SubmitDialogFragment {            submitDialogFragment = newInstance()            submitDialogFragment?.tContent(content)            submitDialogFragment!!.mConfirmListener = confirmListener            //设置普通样式，全屏风格            submitDialogFragment!!.tStyle(STYLE_NORMAL, R.style.Dialog_FullScreen)            submitDialogFragment!!.show(fragmentManager, "")            return submitDialogFragment!!        }        fun dismissDialog() {            submitDialogFragment?.dismiss()        }        fun dialogIsVisible(): Boolean {            return submitDialogFragment != null && submitDialogFragment!!.isVisible        }    }

查看build目录下生成的java字节码

public final class SubmitDialogFragment extends DialogFragment implements OnKeyListener, OnCancelListener {   private View rootView;   pr排除的近义词ivate String content;   private SubmitDialogFragment.ConfirmListener mConfirmListener;   @Nullable   private static SubmitDialogFragment sarctanx等于什么ubmitDialogFragment;   public static final SubmitDialogFragment.Companion Companion = new SubmitDialogFragment.Companion((DefaultConstructorMarker)null);   private HashMap _$_findViewCache;

发现泄漏的我的小狗根本原因

private static SubmitDialogFragment submitDialogFragment;

回忆一下背过的理论知识，可以作为GCRoot根其中之一就是静态成员变量。

解决方案

把引用置为null,submitDialogFragment的实例就会被回收了

        fun dismissDialog() {            submitDialogFragment?.dismiss()            //解决方案            submitDialogFragment = null        }

总结

本文地址：https://blog.csdn.net/weixin_38687303/article/details/112904726