【Android进阶】判断网络连接状态并自动界面跳转

来源：互联网发布：黑搜对淘宝号有影响吗编辑：程序博客网时间：2024/04/30 01:33

用于判断软件打开时的网络连接状态，若无网络连接，提醒用户跳转到设置界面

/** * 设置在onStart()方法里面，可以在界面每次获得焦点的时候都进行检测 */@Overrideprotected void onStart() {ConnectivityManager manager = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo info = manager.getActiveNetworkInfo();if (info != null && info.isConnected()) {Toast.makeText(MainActivity.this, "网络连接连接", 0).show();} else {AlertDialog.Builder builder = new Builder(MainActivity.this);builder.setTitle("开启网络服务");builder.setMessage("网络没有连接，请到设置进行网络设置！");builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {if (android.os.Build.VERSION.SDK_INT > 10) {// 3.0以上打开设置界面，也可以直接用ACTION_WIRELESS_SETTINGS打开到wifi界面startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));} else {startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));}dialog.cancel();}});builder.setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.cancel();}});builder.show();}super.onStart();}

需要注册的权限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

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