下载apk

最新推荐文章于 2022-01-29 10:43:50 发布

原创最新推荐文章于 2022-01-29 10:43:50 发布 · 446 阅读

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CC 4.0 BY-SA版权

本文介绍了一个简单的Android应用程序如何实现网络状态检查及根据不同网络类型进行文件下载的功能，包括利用工具类判断网络是否可用、是WiFi还是移动数据，并展示了如何通过用户交互来选择下载方式。

布局

代码先写工具类，判断网络

public class NetWorkUtils {
    //判断网络连接状态
    public static boolean isNetWorkIsAvailable(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //获取网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null) {
            return true;
        }
       /* if (info.isConnected()) {
            return true;
        }*/

        return false;
    }

    //判断是否是wifi
    public static boolean isWifi(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //获取网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.getType() == connectivityManager.TYPE_WIFI) {
            return true;
        }

        return false;
    }

    //判断是否是手机流量
    public static boolean isMobile(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //获取网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.getType() == connectivityManager.TYPE_MOBILE) {
            return true;
        }

        return false;
    }

}

MainActivity 方法

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //找控件
        Button bt_upload = (Button) findViewById(R.id.bt_upload);
        Button bt_download = (Button) findViewById(R.id.bt_download);
        bt_upload.setOnClickListener(this);
        bt_download.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.bt_upload:
                uploadPic();

                break;
            case R.id.bt_download:
                boolean workIsAvailable = NetWorkUtils.isNetWorkIsAvailable(MainActivity.this);
                if (!workIsAvailable) {
                    Toast.makeText(MainActivity.this, "网络未连接，请设置网络", Toast.LENGTH_SHORT).show();
                    Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);
                    startActivity(intent);
                } else {
                    //连接成功下载
                    Toast.makeText(MainActivity.this, "网络连接成功", Toast.LENGTH_SHORT).show();

                    download();
                }

                break;
        }
    }

    //下载
    private void download() {
        final String[] items = {"wifi", "手机流量"};
        new AlertDialog.Builder(this).setTitle("网络选择").setIcon(R.mipmap.ic_launcher).setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

                switch (which) {
                    case 0:
                        //wifi下下载apk
                        downloadApk();
                        break;
                    case 1:
                        //手机流量下提醒用户
                        boolean mobile = NetWorkUtils.isMobile(MainActivity.this);
                        if (mobile) {
                            Toast.makeText(MainActivity.this, "现在未使用wifi,将耗用手机流量", Toast.LENGTH_SHORT).show();
                            Intent wifiSettingsIntent = new Intent("android.settings.WIFI_SETTINGS");
                            startActivity(wifiSettingsIntent);

                        }

                        break;
                }
                dialog.dismiss();
            }
        }).show();
    }

    //下载apk
    private void downloadApk() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("版本更新");
        builder.setMessage("现在检测到新版本，是否更新？");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                updateApk();
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        builder.create();
        builder.show();

    }

    //版本更新
    private void updateApk() {
        String url = "http://169.254.249.24:8080/08web/app.apk";
        RequestParams params = new RequestParams(url);
        //保存到sdcard
        params.setSaveFilePath(Environment.getExternalStorageDirectory() + "/bawei/");
        //自动文件命令
        params.setAutoRename(true);
        //下载
        x.http().post(params, new Callback.ProgressCallback<File>() {
            @Override
            public void onWaiting() {

            }

            @Override
            public void onStarted() {

            }

            @Override
            public void onLoading(long total, long current, boolean isDownloading) {

            }

            @Override
            public void onSuccess(File result) {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setDataAndType(Uri.fromFile(result), "application/vnd.android.package-archive");
                startActivity(intent);
            }

            @Override
            public void onError(Throwable ex, boolean isOnCallback) {

            }

            @Override
            public void onCancelled(CancelledException cex) {

            }

            @Override
            public void onFinished() {

            }
        });

    }