最简单Android 检查Acitivity 网速的方案

一时失言乱红尘 2022-08-04 05:24 126阅读 0赞

每次获得页面获得焦点 启动检查网络

package com.example.androiddemo;
    
    import android.app.Activity;
    import android.app.AlertDialog;
    import android.app.AlertDialog.Builder;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.net.ConnectivityManager;
    import android.net.NetworkInfo;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
        
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
        }
    
        /**
         * 设置在onStart()方法里面，可以在界面每次获得焦点的时候都进行检测
         */
    
        @Override
        protected void onStart() {
            ConnectivityManager manager = (ConnectivityManager) this
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo info = manager.getActiveNetworkInfo();
            if (info != null && info.isConnected()) {
                Toast.makeText(MainActivity.this, "网络连接连接", 0).show();
            } else {
                AlertDialog.Builder builder = new Builder(MainActivity.this);
                builder.setTitle("开启网络服务");
                builder.setMessage("网络没有连接，请到设置进行网络设置！");
                builder.setPositiveButton("确定",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                if (android.os.Build.VERSION.SDK_INT > 10) {
                                    // 3.0以上打开设置界面，也可以直接用ACTION_WIRELESS_SETTINGS打开到wifi界面
                                    startActivity(new Intent(
                                            android.provider.Settings.ACTION_SETTINGS));
                                } else {
                                    startActivity(new Intent(
                                            android.provider.Settings.ACTION_WIRELESS_SETTINGS));
                                }
                                dialog.cancel();
                            }
                        });
    
                builder.setNegativeButton("取消",
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.cancel();
                            }
                        });
                builder.show();
            }
            super.onStart();
        }
    
    }

在AndroidManifest中加入网络访问的权限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>