Androidはping操作でネットワーク検出を行い、かかった時間を返します

ツールクラス:pingNet:Runtimeでコマンド入力を行い、processでの結果

を取得する.

/**
 * author:    
 * date: 2017/11/7
 * desc:ping   
 */
public class PingNet {
    private static final String TAG = "PingNet";

    /**
     * @param pingNetEntity        
     * @return       
     */
    public static PingNetEntity ping(PingNetEntity pingNetEntity) {
        String line = null;
        Process process = null;
        BufferedReader successReader = null;
        String command = "ping -c " + pingNetEntity.getPingCount() + " -w " + pingNetEntity.getPingWtime() + " " + pingNetEntity.getIp();
//        String command = "ping -c " + pingCount + " " + host;
        try {
            process = Runtime.getRuntime().exec(command);
            if (process == null) {
                Log.e(TAG, "ping fail:process is null.");
                append(pingNetEntity.getResultBuffer(), "ping fail:process is null.");
                pingNetEntity.setPingTime(null);
                pingNetEntity.setResult(false);
                return pingNetEntity;
            }
            successReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            while ((line = successReader.readLine()) != null) {
                Log.i(TAG, line);
                append(pingNetEntity.getResultBuffer(), line);
                String time;
                if ((time = getTime(line)) != null) {
                    pingNetEntity.setPingTime(time);
                }
            }
            int status = process.waitFor();
            if (status == 0) {
                Log.i(TAG, "exec cmd success:" + command);
                append(pingNetEntity.getResultBuffer(), "exec cmd success:" + command);
                pingNetEntity.setResult(true);
            } else {
                Log.e(TAG, "exec cmd fail.");
                append(pingNetEntity.getResultBuffer(), "exec cmd fail.");
                pingNetEntity.setPingTime(null);
                pingNetEntity.setResult(false);
            }
            Log.i(TAG, "exec finished.");
            append(pingNetEntity.getResultBuffer(), "exec finished.");
        } catch (IOException e) {
            Log.e(TAG, String.valueOf(e));
        } catch (InterruptedException e) {
            Log.e(TAG, String.valueOf(e));
        } finally {
            Log.i(TAG, "ping exit.");
            if (process != null) {
                process.destroy();
            }
            if (successReader != null) {
                try {
                    successReader.close();
                } catch (IOException e) {
                    Log.e(TAG, String.valueOf(e));
                }
            }
        }
        Log.i(TAG, pingNetEntity.getResultBuffer().toString());
        return pingNetEntity;
    }

    private static void append(StringBuffer stringBuffer, String text) {
        if (stringBuffer != null) {
            stringBuffer.append(text + "
");
        }
    }

    private static String getTime(String line) {
        String[] lines = line.split("
");
        String time = null;
        for (String l : lines) {
            if (!l.contains("time="))
                continue;
            int index = l.indexOf("time=");
            time = l.substring(index + "time=".length());
            Log.i(TAG, time);
        }
        return time;
    }
}

2.ping結果エンティティークラスは、ping操作後に得られた結果を保存するために使用され、必要に応じてフィールドを追加することができる

public class PingNetEntity {
    /*
     TODO：  ping   ip
     */
    private String ip;

    /*
     TODO：  ping     
     */
    private int pingCount;

    /*
     TODO：ping      
     */

    private int pingWtime;

    /*
     TODO：  ping        
     */
    private StringBuffer resultBuffer;

    /*
     TODO：ping ip     
     */
    private String pingTime;

    /*
     TODO：  ping      
     */
    private boolean result;

    public PingNetEntity(String ip, int pingCount, int pingWtime,StringBuffer resultBuffer) {
        this.ip = ip;
        this.pingWtime=pingWtime;
        this.pingCount = pingCount;
        this.resultBuffer = resultBuffer;
    }

    public String getPingTime() {
        return pingTime;
    }

    public void setPingTime(String pingTime) {
        this.pingTime = pingTime;
    }

    public StringBuffer getResultBuffer() {
        return resultBuffer;
    }

    public void setResultBuffer(StringBuffer resultBuffer) {
        this.resultBuffer = resultBuffer;
    }

    public int getPingCount() {
        return pingCount;
    }

    public void setPingCount(int pingCount) {
        this.pingCount = pingCount;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public boolean isResult() {
        return result;
    }

    public void setResult(boolean result) {
        this.result = result;
    }

    public int getPingWtime() {
        return pingWtime;
    }

    public void setPingWtime(int pingWtime) {
        this.pingWtime = pingWtime;
    }
}

3.Main(ここではツールクラスが使用可能かどうかをテストするため)

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //            ，    UI  ，  ANR
        new Thread(new Runnable() { 
            @Override
            public void run() {
                PingNetEntity pingNetEntity=new PingNetEntity("www.baidu.com",3,5,new StringBuffer());
                pingNetEntity=PingNet.ping(pingNetEntity);
                Log.i("testPing",pingNetEntity.getIp());
                Log.i("testPing","time="+pingNetEntity.getPingTime());
                Log.i("testPing",pingNetEntity.isResult()+"");
            }
        }).start();
    }
}

4.注意点:ネットワーク操作を行う場合、Manifestに適切なネットワークアクセス権を追加してください.