@Override
public XExtensionResult exec(String action, JSONArray args, XCallbackContext callbackCtx)
throws JSONException {
XExtensionResult.Status status = XExtensionResult.Status.INVALID_ACTION;
String result = "Unsupported Operation: " + action;
if (COMMAND_START.equals(action)) {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
final XCallbackContext cbCtx = callbackCtx;
if (null == mBroadcastReceiver) {
mBroadcastReceiver =
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
XLog.d(CLASS_NAME, "received broadcast of battery changing");
updateBatteryInfo(intent, cbCtx);
}
};
getContext().registerReceiver(mBroadcastReceiver, intentFilter);
}
XExtensionResult extensionResult = new XExtensionResult(XExtensionResult.Status.NO_RESULT);
extensionResult.setKeepCallback(true);
return extensionResult;
} else if (COMMAND_STOP.equals(action)) {
removeBatteryListener();
sendUpdate(new JSONObject(), callbackCtx, false);
return new XExtensionResult(XExtensionResult.Status.OK);
}
return new XExtensionResult(status, result);
}
/**
* 根据电池信息的改变新生成ExtensionResult，并且将该消息发送给js
*
* @param info 电池状态的json数据
* @param keepCallback 是否保持回调
* @param callbackCtx 回调上下文环境
*/
private void sendUpdate(JSONObject info, XCallbackContext callbackCtx, boolean keepCallback) {
XExtensionResult result = new XExtensionResult(XExtensionResult.Status.OK, info);
result.setKeepCallback(keepCallback);
callbackCtx.sendExtensionResult(result);
}