Android中AlertDialog弹窗

上图

首先是Main.xml

<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

</RelativeLayout>

之后是diglog_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/web_view"
android:layout_width="match_parent"
android:layout_height="@dimen/dp_400"/>
<LinearLayout
android:layout_marginTop="3dp"
android:layout_below="@id/web_view"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/web_close"
android:layout_weight="1"
android:text="关闭"
android:layout_below="@id/web_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/web_ok"
android:layout_weight="1"
android:text="确定"
android:layout_below="@id/web_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>

在之后就是Main.java

package com.example.myapplication;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

private TextView mText;
private String loadUrl = "https://www.iycgs.com/index.php?m=Api&c=Newjoin&a=guidance";
private WebView web_view;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mText = findViewById(R.id.text);
mText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
createDialog();
}
});
}

private void createDialog() {
Builder builder = new AlertDialog.Builder(this);
final AlertDialog alertDialog = builder.create();
final View dialogView = View.inflate(this, R.layout.diglog_item, null);
alertDialog.setView(dialogView);
web_view = dialogView.findViewById(R.id.web_view);
//webView
WebSettings webSettings = web_view.getSettings();
//支持js，如果不设置本行，html中的js代码都会失效
webSettings.setJavaScriptEnabled(true);
//提高渲染的优先级
webSettings.setRenderPriority(WebSettings.RenderPriority.HIGH);
//将图片调整到适合webview的大小
webSettings.setUseWideViewPort(true);
//缩放至屏幕大小
webSettings.setLoadWithOverviewMode(true);
//支持自动加载图片
webSettings.setLoadsImagesAutomatically(true);
//设置编码格式
webSettings.setDefaultTextEncodingName("utf-8");
//支持内容重新布局
webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
web_view.addJavascriptInterface(this, "android");
webSettings.setUseWideViewPort(true);
float maxsp = getResources().getDimension(R.dimen.sp_12);
final int t = (int) maxsp;
webSettings.setDefaultFontSize(t);
Button web_close = dialogView.findViewById(R.id.web_close);
Button web_ok = dialogView.findViewById(R.id.web_ok);
web_view.loadUrl(loadUrl);
web_close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
alertDialog.dismiss();
}
});
web_ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
alertDialog.dismiss();
}
});
alertDialog.show();
}

}