php直播源码安卓自定义Dialog设置自动消失

<style name="Dialog" parent="@style/Base.V7.Theme.AppCompat.Light.Dialog">        <!--背景透明-->        <item name="android:windowBackground">@android:color/transparent</item>        <!-- 不允许对话框的背景变暗 -->        <item name="android:backgroundDimEnabled">false</item>    </style>

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/toast_layout"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:background="@drawable/back_button_gray">     <ImageView        android:id="@+id/imageView12"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:src="@mipmap/icon_error_red"        app:layout_constraintBottom_toBottomOf="parent"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintTop_toTopOf="parent" />     <TextView        android:id="@+id/toast_tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:text="网络异常,请检查是否连网"        android:textColor="@color/colorWhite"        android:textSize="25sp"        android:textStyle="bold" /> </RelativeLayout>

public class DialogUtil extends Dialog {    private Handler mHandler = new Handler();    public DialogUtil(@NonNull Context context) {        super(context);    }     public DialogUtil(@NonNull Context context, int themeResId) {        super(context, themeResId);    }     protected DialogUtil(@NonNull Context context, boolean cancelable, @Nullable OnCancelListener cancelListener) {        super(context, cancelable, cancelListener);    }     @Override    protected void onStart() {        super.onStart();        mHandler.postDelayed(new Runnable() {            @Override            public void run() {                dismiss();            }        },2000);    }}

View view = View.inflate(getContext(), R.layout.layout_dialog, null);                DialogUtil dialogUtil = new DialogUtil(getContext(), R.style.Dialog);                dialogUtil.setContentView(view);                dialogUtil.show();

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