android中检测网络连接状态简单总结
相应几乎没有不跟网络打交道的android应用,那么在实际中就需求检测手机是否有网络连接,甚至需要判断是何种方式连接,这样能给用户带来更好的体验和一些使用指导,下面给出一些常用的判断,如果要知道是否有网络、以及是采用wifi连接的还是3G连接的,调用下面对应方法模型就OK了,代码如下:TestNetworkActivity:
package com.home.testnetwork; import java.util.List; import android.app.Activity; import android.content.Context; import android.location.LocationManager; 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.EditText; public class TestNetworkActivity extends Activity implements OnClickListener { private Button checkBtn; private EditText netText; private EditText wifiText; private EditText net3gText; private EditText gpsText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); checkBtn = (Button) findViewById(R.id.main_btn_check); checkBtn.setOnClickListener(this); wifiText = (EditText) findViewById(R.id.main_et_wifi); net3gText = (EditText) findViewById(R.id.main_et_3g); gpsText = (EditText) findViewById(R.id.main_et_GPS); netText = (EditText) findViewById(R.id.main_et_net); } /** * 检测网络是否连接 * * @return */ private boolean isNetConnected() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); if (cm != null) { NetworkInfo[] infos = cm.getAllNetworkInfo(); if (infos != null) { for (NetworkInfo ni : infos) { if (ni.isConnected()) { return true; } } } } return false; } /** * 检测wifi是否连接 * * @return */ private boolean isWifiConnected() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); if (cm != null) { NetworkInfo networkInfo = cm.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_WIFI) { return true; } } return false; } /** * 检测3G是否连接 * * @return */ private boolean is3gConnected() { ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); if (cm != null) { NetworkInfo networkInfo = cm.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) { return true; } } return false; } /** * 检测GPS是否打开 * * @return */ private boolean isGpsEnabled() { LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); List<String> accessibleProviders = lm.getProviders(true); for (String name : accessibleProviders) { if ("gps".equals(name)) { return true; } } return false; } @Override public void onClick(View v) { if (v == checkBtn) { netText.setText(isNetConnected() + ""); wifiText.setText(isWifiConnected() + ""); net3gText.setText(is3gConnected() + ""); gpsText.setText(isGpsEnabled() + ""); } } }
布局xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <Button android:id="@+id/main_btn_check" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="检测网络" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="网络是否连接:" /> <EditText android:id="@+id/main_et_net" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:enabled="false" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="wifi是否连接:" /> <EditText android:id="@+id/main_et_wifi" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:enabled="false" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="3G是否连接:" /> <EditText android:id="@+id/main_et_3g" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:enabled="false" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="GPS是否打开:" /> <EditText android:id="@+id/main_et_GPS" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:enabled="false" /> </LinearLayout> </LinearLayout>
补充:移动开发 , Android ,