mtfos/ble-android-demo
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fix bug

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This commit is contained in:
Jay 2017-08-22 22:58:45 +08:00
parent a4c214c1db
commit 7df8649e47
2 changed files with 14 additions and 3 deletions
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4
app/src/main/java/xyz/mtfos/btdemo/MainActivity.kt
View File

@ -53,6 +53,10 @@ class MainActivity : Activity() {
}
}
ble?.setOnNotifyListener{
System.out.println("Get Notify :::::: " + it)
}
var permissionCheck: Int = 0
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
permissionCheck += this@MainActivity.checkSelfPermission(android.Manifest.permission.ACCESS_COARSE_LOCATION)

13
app/src/main/java/xyz/mtfos/btdemo/PrinterBle.java
View File

@ -6,6 +6,7 @@ import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCallback;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.bluetooth.BluetoothManager;
import android.bluetooth.le.BluetoothLeScanner;
@ -58,6 +59,7 @@ public class PrinterBle {
// 藍芽狀態
public int mState = 0x00;
private boolean isConnected = false;
// 藍芽通訊flag
private boolean sending = false;
@ -98,6 +100,10 @@ public class PrinterBle {
if(mState != DISCONNECTED) {
mState = CONNECTED;
Log.d(TAG, "Connected");
if(!isConnected) {
isConnected = true;
mBtGatt.discoverServices();
}
}
mHandler.postDelayed(new Runnable() {
@Override
@ -105,9 +111,6 @@ public class PrinterBle {
mStateListener.onChange(mState);
}
}, 100);
if(mState == CONNECTED) {
mBtGatt.discoverServices();
}
} else if (newState == BluetoothGatt.GATT_FAILURE) {
mState = DISCONNECTED;
Log.d(TAG, "Connect Failed");
@ -125,6 +128,9 @@ public class PrinterBle {
printerCharacteristic = btService.getCharacteristic(UUID.fromString(characteristicUUID));
// set notify enable
mBtGatt.setCharacteristicNotification(printerCharacteristic, true);
BluetoothGattDescriptor descriptor = printerCharacteristic.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
mBtGatt.writeDescriptor(descriptor);
}
}
}
@ -262,6 +268,7 @@ public class PrinterBle {
*/
public void disconnect() {
mState = DISCONNECTED;
isConnected = false;
if (mBtGatt != null) mBtGatt.disconnect();
}