我在MainActivity中有一个按钮，用于将<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Write Char"
android:id="@+id/button2"
android:onClick="onClickWrite" />
写入BLE设备：
onClickWrite函数public void onClickWrite(View v){
if(mBluetoothLeService != null) {
byte [] data= new byte[3];
data[0] = (byte)(0 & 0xFF);
data[1] = (byte)(255 & 0xFF);
data[2] = (byte)(0 & 0xFF);
mBluetoothLeService.sendData(data);
}
}
是
sendData其中[BluetoothLeService][1]是类sendData中的修改函数。按下按钮时效果很好。但是，让我们仔细看看public void sendData(byte[] data){
String lService = "00001c00-d102-11e1-9b23-00025b00a5A5";
String lCharacteristic = "00001c03-d102-11e1-9b23-00025b00a5a5";
BluetoothGattService mBluetoothLeService = null;
BluetoothGattCharacteristic mBluetoothGattCharacteristic = null;
for (BluetoothGattService service : mBluetoothGatt.getServices()) {
if ((service == null) || (service.getUuid() == null)) {
Log.d("TAG","Something is null");
continue;
}
if (lService.equalsIgnoreCase(service.getUuid().toString())) {
Log.d("TAG","service.getUuid().toString()="+service.getUuid().toString());
mBluetoothLeService = service;
}
}
if(mBluetoothLeService!=null) {
mBluetoothGattCharacteristic =
mBluetoothLeService.getCharacteristic(UUID.fromString(lRgbCharacteristic));
}
else{
Log.d("TAG","mBluetoothLeService is null");
}
if(mBluetoothGattCharacteristic!=null) {
mBluetoothGattCharacteristic.setValue(data);
boolean write = mBluetoothGatt.writeCharacteristic(mBluetoothGattCharacteristic);
Log.d("TAG","writeCharacteristic:"+write);
}
else{
Log.d("TAG", "mBluetoothGattCharacteristic is null");
}
}
函数。当我按下按钮时，它再次搜索服务和特征。在BLE中写一个特征是正确的程序吗？
NSNumber *num = [NSNumber numberWithInt:496];
NSLog(@"Object in Array 2 %@",[self.tileProperties objectForKey:num]);
2016-09-12 18:14:43.217 GreatGrimBeta[1156:149732] LOOK {
fire = 7;
}
答案 0 :(得分：1)
是。
（填写不必要的长度）