下载安装apk 与webview 百度界面

最新推荐文章于 2025-07-24 17:06:19 发布

原创最新推荐文章于 2025-07-24 17:06:19 发布 · 1.4k 阅读

0 ·

CC 4.0 BY-SA版权

本文介绍如何在Android应用中通过WebView加载百度页面，并演示下载APK文件的过程，以`baiduxinwen.apk`为例，提供了一个简单的下载安装体验。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

public class MainActivity extends AppCompatActivity {
    private int code;
    private ProgressDialog progressDialog;
    private WebView webView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initWebView();
        PackageManager manager = getPackageManager();
        try {
            PackageInfo info = manager.getPackageInfo(getPackageName(), 0);
            code = info.versionCode;
            showUpate();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    //百度网页
    private void initWebView() {
        String url = "http://www.baidu.com";
        webView = (WebView) findViewById(R.id.web_view);
        //设置该方法,在当前app中显示网页
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                return super.shouldOverrideUrlLoading(view, request);
            }
        });
        WebSettings settings = webView.getSettings();
        settings.setBuiltInZoomControls(true);
        settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        settings.setJavaScriptEnabled(true);
        webView.loadUrl(url);
    }
    private void showUpate(){
        new AlertDialog.Builder(this)
                .setTitle("更新版本")
                .setMessage("当前版本是" + versionCode + " 需要升级")
                .setPositiveButton("下载", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        downloadApk();
                    }
                })
                .setNegativeButton("取消", null)
                .create()
                .show();
    }
    private void downloadApk() {
        String url="http://gdown.baidu.com/data/wisegame/f98d235e39e29031/baiduxinwen.apk";
        String path = Environment.getExternalStorageDirectory().getPath() + "/teme1/myapk.apk";
        File file = new File(path);
        File parentFile = file.getParentFile();
        if (!parentFile.exists()){
            parentFile.mkdir();
        }
        RequestParams params = new RequestParams(url);
        params.setAutoRename(false);
        params.setAutoResume(true);
        //设置保存路径
        params.setSaveFilePath(path);
        x.http().get(params, new Callback.ProgressCallback<File>() {
            @Override
            public void onSuccess(File result) {
                installDownloadApk(result);
            }
            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
            }
            @Override
            public void onCancelled(CancelledException cex) {
            }
            @Override
            public void onFinished() {
                cancleProgressDialog();
            }
            @Override
            public void onWaiting() {
            }
            @Override
            public void onStarted() {
                showProgressDialog();
            }
            @Override
            public void onLoading(long total, long current, boolean isDownloading) {
                int pross= (int) (current/total*100);
                if (pross>=0&&pross<=100){                updataProgressDialog(pross);
                }
            }       
 });  
  }   
//安卓开发 apk安装
    private void installDownloadApk(File result) {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(Uri.fromFile(result), "application/vnd.android.package-archive");
        startActivity(intent);
    }
    private void cancleProgressDialog() {
        if (progressDialog == null) {
            return;
        }
        if (progressDialog.isShowing()) {
            progressDialog.dismiss();
        }
    }
    private void updataProgressDialog(int progress) {
        if (progressDialog == null) {
            return;
        }
        progressDialog.setProgress(progress);
    }
    private void showProgressDialog() {
        progressDialog = new ProgressDialog(this);
        //设置progressDialog显示样式
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        progressDialog.setMessage("我正在下载东西");
        progressDialog.setTitle("请等待");
        progressDialog.setProgress(0);
        progressDialog.show();
    }
Application 类
public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        x.Ext.init(this);
    }
}
//网址
http://gdown.baidu.com/data/wisegame/f98d235e39e29031/baiduxinwen.apk