[英]How can I let android system kill my application when it runs in backgroud?
[英]How can I turn Wifi on when my application runs in Android?
當我啟動我的Twitter應用程序時,如何通過編碼自動打開WiFi?
我沒有試過這個,但它應該工作:
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifiManager != null)
wifiManager.setWifiEnabled(true);
將此權限添加到清單文件:
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
if(text.indexOf(“off”)!= -1){WifiManager wifi =(WifiManager)this.getApplicationContext()。getSystemService(Context.WIFI_SERVICE); if(!wifi.isWifiEnabled()){Toast.makeText(MainActivity.this,“Already WiFi is Disabled”,Toast.LENGTH_SHORT).show(); tts.speak(“已經禁用WiFi”,TextToSpeech.QUEUE_ADD,null); } else {wifi.setWifiEnabled(false); Toast.makeText(MainActivity.this,“關閉wifi”Toast.LENGTH_SHORT).show(); tts.speak(“關閉wifi”,TextToSpeech.QUEUE_ADD,null); }}
if (text.indexOf("wi-fi") != -1) {
if (text.indexOf("on") != -1) {
WifiManager wifi = (WifiManager) this.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled()) {
Toast.makeText(MainActivity.this, "Already WiFi is Enabled", Toast.LENGTH_SHORT).show();
tts.speak("Already WiFi is Enabled", TextToSpeech.QUEUE_ADD, null);
}
else {
wifi.setWifiEnabled(true);
Toast.makeText(MainActivity.this,"Turning on",Toast.LENGTH_SHORT).show();
Toast.makeText(MainActivity.this, "Turning on wifi", Toast.LENGTH_SHORT).show();
tts.speak("Turning on wifi", TextToSpeech.QUEUE_ADD, null);
}
}
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