Question

我正在尝试使用service和broadcastreceiver找到最后一次android重启的时间。我的＃＆＃34;广播＆＃34; class应该在重启后立即记录时间。在＆＃34; OnCreate＆＃34;方法a计算的时间，但它不起作用。

我做错了什么？

我的＆＃34;服务器＆＃34;类：

public class Server extends Service{

IBinder mBinder = new LocalBinder();

@Override
public IBinder onBind(Intent intent) {
    return mBinder;
}

public class LocalBinder extends Binder {
    public Server getServerInstance() {
        return Server.this;
    }
} }

我的＆＃34;客户＆＃34;类：

public class Client extends Activity {

boolean mBounded;
Server mServer;
TextView text;
Button button;
Broadcast bc = new Broadcast();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    text = (TextView)findViewById(R.id.text);
    button = (Button) findViewById(R.id.button);

    Intent mIntent = new Intent(this, Server.class);
    bindService(mIntent, mConnection, BIND_AUTO_CREATE);

    button.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            text.setText(String.valueOf(System.currentTimeMillis() - bc.t));
        }
    });
}

@Override
protected void onStart() {
    super.onStart();
    Intent mIntent = new Intent(this, Server.class);
    bindService(mIntent, mConnection, BIND_AUTO_CREATE);
}

ServiceConnection mConnection = new ServiceConnection() {

    public void onServiceDisconnected(ComponentName name) {
        Toast.makeText(Client.this, "Service is disconnected", Toast.LENGTH_LONG).show();
        mBounded = false;
        mServer = null;
    }

    public void onServiceConnected(ComponentName name, IBinder service) {
        Toast.makeText(Client.this, "Service is connected", Toast.LENGTH_LONG).show();
        mBounded = true;
        LocalBinder mLocalBinder = (LocalBinder)service;
        mServer = mLocalBinder.getServerInstance();
    }
};

@Override
protected void onStop() {
    super.onStop();
    if(mBounded) {
        unbindService(mConnection);
        mBounded = false;
    }
}}

＆＃34;广播＆＃34;类：

public class Broadcast extends BroadcastReceiver {
public long t;
@Override
public void onReceive(Context context, Intent intent) {
    t = System.currentTimeMillis();
    Intent serviceLauncher = new Intent(context, Server.class);
    context.startService(serviceLauncher);
}}

清单：

<receiver android:name="com.example.serv.Broadcast" android:enabled="true" android:exported="false">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
    <service android:enabled="true" android:name=".Server"/>

Answer 1

我做错了什么？

可能还没有阅读docs吗？

有一个现成的API，SystemClock.uptimeMillis()

返回自启动以来的毫秒数，不计算在深度睡眠中花费的时间。

您也可以使用SystemClock.elapsedRealtime()

返回自启动以来的毫秒数，包括睡眠时间。

如何找到最后一次重启android的时间？

1 个答案: