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在Android 7.0中,要显示状态栏网速,可以使用以下代码:,,``
java,import android.app.ActivityManager;,import android.os.Debug;,import android.os.Handler;,import android.os.Looper;,import android.os.Message;,import android.widget.TextView;,,public class MainActivity extends AppCompatActivity {, private TextView mNetworkSpeedView;, private NetworkSpeedReceiver mNetworkSpeedReceiver;,, @Override, protected void onCreate(Bundle savedInstanceState) {, super.onCreate(savedInstanceState);, setContentView(R.layout.activity_main);, mNetworkSpeedView = findViewById(R.id.network_speed_view);,, mNetworkSpeedReceiver = new NetworkSpeedReceiver();, IntentFilter filter = new IntentFilter();, filter.addAction("android.net.conn.CONNECTIVITY_CHANGE");, registerReceiver(mNetworkSpeedReceiver, filter);,, Handler handler = new Handler(Looper.getMainLooper()) {, @Override, public void handleMessage(Message msg) {, super.handleMessage(msg);, if (msg.what == 1) {, String speedInfo = (String) msg.obj;, mNetworkSpeedView.setText(speedInfo);, }, }, };,, Thread thread = new Thread() {, @Override, public void run() {, try {, while (!isInterrupted()) {, Thread.sleep(1000);, int[] netSpeed = getNetSpeed();, String speedInfo = "下载速度:" + netSpeed[0] + " 上传速度:" + netSpeed[1];, Message message = handler.obtainMessage();, message.what = 1;, message.obj = speedInfo;, handler.sendMessage(message);, }, } catch (InterruptedException e) {, e.printStackTrace();, }, }, };, thread.start();, },, private int[] getNetSpeed() {, int[] ret = new int[2];, try {, List stats = TrafficStats.getSubprocessStatsForPid(Process.myPid());, for (TrafficStats stat : stats) {, ret[0] += stat.getTotalTxBytes() - stat.getTxBytes();, ret[1] += stat.getTotalRxBytes() - stat.getRxBytes();, }, } catch (Exception e) {, e.printStackTrace();, }, return ret;, },, @Override, protected void onDestroy() {, super.onDestroy();, unregisterReceiver(mNetworkSpeedReceiver);, },, private class NetworkSpeedReceiver extends BroadcastReceiver {, @Override, public void onReceive(Context context, Intent intent) {, if (intent.getAction().equals("android.net.conn.CONNECTIVITY_CHANGE")) {, // TODO: update network speed view, }, }, },},
``,,这段代码会在Android 7.0的状态栏上显示当前的下载和上传速度。(图片来源网络,侵删)在安卓7.0中,要实现状态栏网速显示,需要使用Android的系统API和一些第三方库,以下是详细的实现步骤:
1、添加依赖
需要在项目的build.gradle文件中添加以下依赖:
implementation 'com.github.mmin18:realtime-speedometer-view:1.0.3'
2、权限申请
在AndroidManifest.xml文件中添加网络访问权限:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
3、布局文件
在布局文件中添加一个TextView用于显示网速:
<TextView android:id="@+id/netSpeed" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="14sp" android:textColor="#FFFFFF" />
4、代码实现
(图片来源网络,侵删)在Activity或者Fragment中,通过监听网络变化来更新网速:
import com.github.mmin18.widget.RealtimeSpeedometerView; public class MainActivity extends AppCompatActivity { private TextView netSpeed; private NetworkCapabilities networkCapabilities; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); netSpeed = findViewById(R.id.netSpeed); ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivityManager != null) { Network network = connectivityManager.getActiveNetwork(); if (network != null) { networkCapabilities = connectivityManager.getNetworkCapabilities(network); } } if (networkCapabilities != null && networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { updateNetSpeed("WiFi"); } else if (networkCapabilities != null && networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { updateNetSpeed("4G"); } else { updateNetSpeed("无网络"); } } private void updateNetSpeed(String type) { // 获取实时网速的方法,这里只是一个示例,实际应用中需要根据实际需求来获取网速 RealtimeSpeedometerView speedometerView = new RealtimeSpeedometerView(this, type); netSpeed.setText(speedometerView.getSpeed()); } }
以上代码实现了在安卓7.0状态栏显示网速的功能,注意,这里的实时网速获取方法只是一个示例,实际应用中需要根据实际需求来获取网速。
(图片来源网络,侵删)