判断网络状态
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package com.example.demo2_wangluozhuangtai;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void huoqu(View view){
//得到系统服务
/* ConnectivityManager manager= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);*/
ConnectivityManager manager= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
//得到网络信息类对象
/* NetworkInfo networkInfo = manager.getActiveNetworkInfo();*/
NetworkInfo networkInfo = manager.getActiveNetworkInfo();
//判断已经连接
if(networkInfo!=null&&networkInfo.isConnected()){
Toast.makeText(MainActivity.this, "已经连接", 0).show();
//判断手机网络类型
int type = networkInfo.getType();
switch (type) {
case ConnectivityManager.TYPE_WIFI:
Toast.makeText(MainActivity.this, "wifi", 0).show();
break;
case ConnectivityManager.TYPE_MOBILE:
Toast.makeText(MainActivity.this, "移动数据", 0).show();
break;
default:
break;
}
}else {
//没有连接
Toast.makeText(MainActivity.this, "没有连接", 0).show();
AlertDialog.Builder builder=new Builder(MainActivity.this);
builder.setTitle("网络未连接");
builder.setMessage("是否设置网络?");
//跳转设置页面按钮
builder.setPositiveButton("设置网络", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//进入设置页面
Intent intent=new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);
startActivity(intent);
}
});
//取消按钮
builder.setNegativeButton("取消", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.show();
}
}
}
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void huoqu(View view){
//得到系统服务
/* ConnectivityManager manager= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);*/
ConnectivityManager manager= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
//得到网络信息类对象
/* NetworkInfo networkInfo = manager.getActiveNetworkInfo();*/
NetworkInfo networkInfo = manager.getActiveNetworkInfo();
//判断已经连接
if(networkInfo!=null&&networkInfo.isConnected()){
Toast.makeText(MainActivity.this, "已经连接", 0).show();
//判断手机网络类型
int type = networkInfo.getType();
switch (type) {
case ConnectivityManager.TYPE_WIFI:
Toast.makeText(MainActivity.this, "wifi", 0).show();
break;
case ConnectivityManager.TYPE_MOBILE:
Toast.makeText(MainActivity.this, "移动数据", 0).show();
break;
default:
break;
}
}else {
//没有连接
Toast.makeText(MainActivity.this, "没有连接", 0).show();
AlertDialog.Builder builder=new Builder(MainActivity.this);
builder.setTitle("网络未连接");
builder.setMessage("是否设置网络?");
//跳转设置页面按钮
builder.setPositiveButton("设置网络", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//进入设置页面
Intent intent=new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);
startActivity(intent);
}
});
//取消按钮
builder.setNegativeButton("取消", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.show();
}
}
}
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