pda-web/app/src/main/java/chaoran/business/activity/MainActivity.java

package chaoran.business.activity;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.Build;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.*;
import android.widget.ProgressBar;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import chaoran.business.BrandEnum;
import chaoran.business.R;
import chaoran.business.adapter.*;
import chaoran.business.vioce.TekVoiceEngine;
import chaoran.business.vioce.VoiceEngine;

/**
 * 流程：联网认证设备型号，验证通过，查找设备品牌进行调用驱动操作
 */

/**
 * 提供文字转语音功能，实时播报PDA状态
 */
public class MainActivity extends AppCompatActivity implements ResultListener {

    private WebView webView;
    private Adapter adapter;
    private VoiceEngine voiceEngine;
    private ProgressBar progressBar;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        initData();
    }

    private void initData() {
        BrandEnum brand = BrandEnum.code(Build.MANUFACTURER);
        Toast.makeText(this, Build.MANUFACTURER, Toast.LENGTH_LONG).show();
        switch (brand) {
            case UROBO:
                adapter = new UroBoAdapter(this, this);
                break;
            case ROCKCHIP:
                adapter = new RockChipAdapter(this, this);
                break;
            case IDATA:
                adapter = new IDataAdapter(this, this);
                break;
            case ALPS:
                adapter = new AlpsAdapter(this, this);
                break;
        }
        if (null != adapter) {
            adapter.start();
        }
    }

    @SuppressLint("JavascriptInterface")
    private void initView() {
        //隐藏状态栏
        getSupportActionBar().hide();
        voiceEngine = new TekVoiceEngine(this);
        webView = findViewById(R.id.webView);
        progressBar = findViewById(R.id.loading);
        webView.setWebViewClient(disposeView());
        WebSettings settings = webView.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setDomStorageEnabled(true);
        webView.addJavascriptInterface(voiceEngine, "VoiceEngine");
        webView.loadUrl(url());
    }

    //配置客户端
    private WebViewClient disposeView() {
        return new WebViewClient() {
            //页面开始加载时
            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                progressBar.setVisibility(View.VISIBLE);
            }

            //页面加载完成时
            @Override
            public void onPageFinished(WebView view, String url) {
                super.onPageFinished(view, url);
                progressBar.setVisibility(View.INVISIBLE);
            }

            //网络发生错误时,先展示错误界面，然后关闭加载条
            @Override
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                switch (errorCode) {
                    case 404:
                        webView.loadUrl("file:///android_asset/error/404.html");
                        break;
                    case 500:
                        webView.loadUrl("file:///android_asset/error/500.html");
                        break;
                    default:
                        webView.loadUrl("file:///android_asset/error/index.html");
                }
                super.onReceivedError(view, errorCode, description, failingUrl);
                progressBar.setVisibility(View.INVISIBLE);
            }

            //安卓6.0以上发生错误时回调
            @Override
            public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                    switch (error.getErrorCode()) {
                        case 404:
                            webView.loadUrl("file:///android_asset/error/404.html");
                            break;
                        case 500:
                            webView.loadUrl("file:///android_asset/error/500.html");
                            break;
                        default:
                            webView.loadUrl("file:///android_asset/error/index.html");
                    }
                }
                super.onReceivedError(view, request, error);
                progressBar.setVisibility(View.INVISIBLE);
            }
        };
    }


    @Override
    protected void onResume() {
        //再次唤醒该页面时，重新加载页面和语音配置
        webView.loadUrl(url());
        voiceEngine.loadParam();
        super.onResume();
    }

    @Override
    @SuppressLint("SetJavaScriptEnabled")
    public void result(String result) {
        runOnUiThread(() -> webView.loadUrl("javascript:render(\'" + result + "\')"));
    }

    @Override
    protected void onDestroy() {
        adapter.stop();
        super.onDestroy();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()) {
            case R.id.action_setting_network:
                startActivity(new Intent(this, NetworkSettingActivity.class));
                break;
            case R.id.action_setting_voice:
                startActivity(new Intent(this, VoiceSettingActivity.class));
                break;
            case R.id.action_about:
                startActivity(new Intent(this, AboutActivity.class));
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    private String url() {
        SharedPreferences spf = this.getSharedPreferences("crtech", Context.MODE_PRIVATE);
        Integer port = spf.getInt("port", -1);
        if (port == -1) {
            return "file:///android_asset/demo/index.html";
        }
        String address = spf.getString("address", "").replaceAll(" ", "");
        String path = spf.getString("path", "").replaceAll(" ", "");
        String link = address.concat(":").concat(String.valueOf(port)).concat(path);
        return link.startsWith("http://") ? link : "http://".concat(link);
    }

}