android使用wifi实例

package com.example.wifitest1;import java.util.List;import android.app.Activity;import android.content.Context;import android.net.wifi.ScanResult;import android.net.wifi.WifiManager;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity {private TextView tv;private Button btn;// wifi管理器private WifiManager wifimanager;// 扫描结果private ScanResult result;// 扫描结果列表private List<ScanResult> scanlist;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);wifimanager = (WifiManager) MainActivity.this.getSystemService(Context.WIFI_SERVICE);tv = (TextView) findViewById(R.id.textView1);btn = (Button) findViewById(R.id.button1);if (!wifimanager.isWifiEnabled()) {wifimanager.setWifiEnabled(true);}wifimanager.saveConfiguration();scanlist = wifimanager.getScanResults();btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// 定义一个可变的字符串StringBuilder sb = new StringBuilder();sb.append("start:\n");if (scanlist != null) {for (int i = 0; i < scanlist.size(); i++) {result = scanlist.get(i);sb.append(result.toString()).append("\n");}}tv.setText(sb.toString());}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.activity_main, menu);return true;}}

另外需要在Androidmanifest.xml中添加user-permission权限，在<manifest></manifest>之间添加

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

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

即可

打印出周围的wifi热点。。。

更多相关文章

随机推荐