android - 在 webview 加载 android 应用程序后 Prelaoder 不去

Question

我已经制作了一个用于学习目的的 webview 应用程序，我正在尝试在 webview 之前添加一些预加载器作为下一步，我已经为预加载器添加了代码，但问题是即使在加载 webview 后预加载器也没有消失，感谢任何帮助，如果可能的话，也请建议添加下拉刷新代码。

mainactivity.java
package com.example.motomaxsport;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

import com.github.ybq.android.spinkit.sprite.Sprite;
import com.github.ybq.android.spinkit.style.Wave;

import static android.view.View.GONE;


public class MainActivity extends AppCompatActivity {

    private WebView webView;


    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ProgressBar progressBar = (ProgressBar)findViewById(R.id.spin_kit);
        Sprite doubleBounce = new Wave();
        progressBar.setIndeterminateDrawable(doubleBounce);

        CustomWebViewClient client = new CustomWebViewClient(this);

        webView = findViewById(R.id.webView);
        webView.setWebViewClient(client);
        webView.getSettings().setJavaScriptEnabled(true);

        webView.loadUrl("https://motomaxsport.com/");
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event){
        if(keyCode == KeyEvent.KEYCODE_BACK && this.webView.canGoBack()){
            this.webView.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
}

class CustomWebViewClient extends WebViewClient{
    private final Activity activity;
    public CustomWebViewClient(Activity activity){
        this.activity = activity;
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView webView, String url){
        return false;
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView webView, WebResourceRequest request){
        return false;
    }

}

activity main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent">

    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
    <com.github.ybq.android.spinkit.SpinKitView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/spin_kit"
        style="@style/SpinKitView.Large.Circle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        app:SpinKit_Color="#ff3822"
        android:layout_centerInParent="true"/>

</RelativeLayout>

androidmainfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.motomaxsport">
    <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Motomaxsport">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

标签： androidwebviewpreloader