Qt開(kāi)發(fā)android應(yīng)用，從Qt端調(diào)用android原生接口獲取手機(jī)熱點(diǎn)開(kāi)關(guān)狀態(tài)，首先來(lái)看一下封裝好的android接口類(lèi)wifiHostBiz.java

(以下代碼來(lái)自網(wǎng)絡(luò))

package com.lyy.test;import android.content.Context; import android.net.wifi.ScanResult; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.net.wifi.WifiManager.WifiLock; import android.util.Log;import java.lang.reflect.Method;/*** WIFI熱點(diǎn)業(yè)務(wù)類(lèi)* 獲取熱點(diǎn)狀態(tài)，設(shè)置熱點(diǎn)開(kāi)關(guān)**/ public class WifiHostBiz {private final String TAG = "WifiHostBiz";private WifiManager wifiManager;private String WIFI_HOST_SSID = "AndroidAP";private String WIFI_HOST_PRESHARED_KEY = "12345678";// 密碼必須大于8位數(shù)public WifiHostBiz(Context context) {super();//獲取wifi管理服務(wù)wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);}/**判斷熱點(diǎn)開(kāi)啟狀態(tài)*/public boolean isWifiApEnabled() {return getWifiApState() == WIFI_AP_STATE.WIFI_AP_STATE_ENABLED;}private WIFI_AP_STATE getWifiApState(){int tmp;try {Method method = wifiManager.getClass().getMethod("getWifiApState");tmp = ((Integer) method.invoke(wifiManager));// Fix for Android 4if (tmp > 10) {tmp = tmp - 10;}return WIFI_AP_STATE.class.getEnumConstants()[tmp];} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();return WIFI_AP_STATE.WIFI_AP_STATE_FAILED;}}public enum WIFI_AP_STATE {WIFI_AP_STATE_DISABLING, WIFI_AP_STATE_DISABLED, WIFI_AP_STATE_ENABLING, WIFI_AP_STATE_ENABLED, WIFI_AP_STATE_FAILED}/*** wifi熱點(diǎn)開(kāi)關(guān)* @param enabled true：打開(kāi) false：關(guān)閉* @return true：成功 false：失敗*/public boolean setWifiApEnabled(boolean enabled) {System.out.println(TAG + ":開(kāi)啟熱點(diǎn)");if (enabled) { // disable WiFi in any case//wifi和熱點(diǎn)不能同時(shí)打開(kāi)，所以打開(kāi)熱點(diǎn)的時(shí)候需要關(guān)閉wifiwifiManager.setWifiEnabled(false);System.out.println(TAG + ":關(guān)閉wifi");}else{wifiManager.setWifiEnabled(true);}try {//熱點(diǎn)的配置類(lèi)WifiConfiguration apConfig = new WifiConfiguration();//配置熱點(diǎn)的名稱(chēng)(可以在名字后面加點(diǎn)隨機(jī)數(shù)什么的)apConfig.SSID = WIFI_HOST_SSID;//配置熱點(diǎn)的密碼apConfig.preSharedKey = WIFI_HOST_PRESHARED_KEY;//安全：WPA2_PSKapConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);//通過(guò)反射調(diào)用設(shè)置熱點(diǎn)Method method = wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);//返回?zé)狳c(diǎn)打開(kāi)狀態(tài)return (Boolean) method.invoke(wifiManager, apConfig, enabled);} catch (Exception e) {return false;}} }

首先，如果是一個(gè)新創(chuàng)建的Qt工程，需要?jiǎng)?chuàng)建一個(gè)AndroidManifest.xml文件，創(chuàng)建過(guò)程不再贅述，然后創(chuàng)建一個(gè)Java的類(lèi)，繼承于

public class MainActivity extends org.qtproject.qt5.android.bindings.QtActivity

先定義一個(gè)wifiHostBiz的對(duì)象

public WifiHostBiz wifiHostBiz; 然后在onCreate中初始化該對(duì)象

wifiHostBiz = new WifiHostBiz(this);

接下來(lái)定義一個(gè)公有的靜態(tài)函數(shù)

/***獲取熱點(diǎn)狀態(tài)*/ public static boolean isWifiApEnabled(){return m_instance.wifiHostBiz.isWifiApEnabled(); }

在C++中的調(diào)用方法如下：

bool AndroidInterface::getWifiApStatus() {bool ret = false;ret = QAndroidJniObject::callStaticMethod<jboolean>("com/lyy/test/MainActivity","isWifiApEnabled","()Z");return ret; }

總結(jié)

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