Android WebView

程序员文章站 2022-06-19 09:42:04

public class MainActivity extends AppCompatActivity { private ProgressBar progress1; private WebView webview1; private TextView titleStr; private Boolean flag = false; @Override protected void onCreate(Bundle savedInstanceState) {...

public class MainActivity extends AppCompatActivity {

    private ProgressBar progress1;
    private WebView webview1;
    private TextView titleStr;
    private Boolean flag = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.hide();
        }
        initView();
    }

    private void initView() {

        // 初始化控件
        progress1 = (ProgressBar) findViewById(R.id.progressbar1);
        webview1 = (WebView) findViewById(R.id.webview1);
        titleStr = (TextView) findViewById(R.id.title);

        // 载入网页
        webview1.getSettings().setJavaScriptEnabled(true);
        webview1.loadUrl("file:///android_asset/www/index.html");

        // 显示和隐藏进度条
        webview1.setWebChromeClient(new WebChromeClient(){
            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                if (newProgress == 100) {
                    progress1.setVisibility(View.GONE);
                    progress1.setProgress(newProgress);
                }else {
                    progress1.setVisibility(View.VISIBLE);
                    progress1.setProgress(newProgress);
                }
            }
        });
        // 签到成功以及提示
        webview1.setWebViewClient(new WebViewClient(){
            @Override
            public void onPageFinished(WebView view, String url) {

                if(webview1.getUrl().equals("file:///android_asset/www/detail.html")){
//                    改变actionBar 标题内容
                    titleStr.setText("积分签到");
                }

                if(webview1.getUrl().equals("file:///android_asset/www/detail.html#p1")){
//                    flag用于记录是否签到过
                    if(!flag){
                        Toast.makeText(MainActivity.this, "签到有彩蛋，积分+100", Toast.LENGTH_SHORT).show();
                        flag = true;
                    }else {
                        Toast.makeText(MainActivity.this, "您已领取", Toast.LENGTH_SHORT).show();
                    }
                }
            }
        });
    }

}

detail.html:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>任务1</title>
    <link type="text/css" rel="stylesheet" href="index.css">
    <script type="text/javascript" src="flexible.min.js"></script>
</head>
<body>
<a href="#p1"><img src="ticket.png" class="detail-img"></a>

</body>
</html>

布局资源:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
<LinearLayout
    android:layout_width="match_parent"
    android:background="@color/colorPrimary"
    android:layout_height="30dp">
    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:text="这是Title"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="@android:color/white"
        android:layout_height="wrap_content"/>
</LinearLayout>
    <ProgressBar
        android:id="@+id/progressbar1"
        android:layout_width="match_parent"
        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
        android:layout_height="20dp"/>

    <WebView
        android:id="@+id/webview1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

本文地址：https://blog.csdn.net/weixin_44043817/article/details/109624723

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