package com.zhou.android.bluetooth;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.Switch;
import android.widget.TextView;
import android.widget.Toast;
import com.zhou.android.R;
import com.zhou.android.common.Tools;
import java.util.HashMap;
import java.util.Set;
/**
* Bluetooth 蓝牙列表
* Created by ZhOu on 2017/6/15.
*/
public class BluetoothListFragment extends Fragment {
/**
* 开启蓝牙请求码
*/
private final static int RequestBluetoothCode = 10001;
/**
* 开放搜索请求码
*/
private final static int RequestBluetoothDiscoverable = 10002;
private Switch sw_bluetooth, sw_discoverable;
private LinearLayout ll_match, ll_usable;
private LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
private int padding = 6;
private BluetoothAdapter bluetoothAdapter;
private Handler handler;
private HashMap<String, BluetoothDevice> matchData = new HashMap<>();
private HashMap<String, BluetoothDevice> usableData = new HashMap<>();
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_bluetooth_list, container, false);
initView(view);
init();
addListener();
return view;
}
private void initView(View view) {
sw_bluetooth = (Switch) view.findViewById(R.id.sw_bluetooth);
sw_discoverable = (Switch) view.findViewById(R.id.sw_discoverable);
ll_match = (LinearLayout) view.findViewById(R.id.ll_match);
ll_usable = (LinearLayout) view.findViewById(R.id.ll_use);
padding = Tools.dip2px(getActivity(), padding);
}
private void init() {
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Toast.makeText(getActivity(), "Your device do not support Bluetooth.", Toast.LENGTH_SHORT).show();
return;
}
sw_bluetooth.setChecked(bluetoothAdapter.isEnabled());
sw_discoverable.setChecked(bluetoothAdapter.getScanMode() == BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE);
if (!bluetoothAdapter.isEnabled())
requestBluetoothEnable();
else {
loadMatch();
bluetoothAdapter.startDiscovery();
}
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
intentFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
getActivity().registerReceiver(bluetoothReceiver, intentFilter);
}
private void addListener() {
sw_bluetooth.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
requestBluetoothEnable();
} else {
bluetoothAdapter.disable();
}
}
});
sw_discoverable.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) requestBluetoothDiscoverable();
}
});
}
private void loadMatch() {
Set<BluetoothDevice> set = bluetoothAdapter.getBondedDevices();
if (set.size() == 0)
return;
if (ll_match.getVisibility() == View.GONE)
ll_match.setVisibility(View.VISIBLE);
if (matchData.size() > set.size()) {
View title = ll_match.getChildAt(0);
ll_match.removeAllViews();
ll_match.addView(title);
}
for (BluetoothDevice device : set) {
String key = device.getAddress();
if (!matchData.containsKey(key)) {
matchData.put(key, device);
}
View v = ll_match.findViewWithTag(key);
if (v == null) {
ll_match.addView(createItem(device));
}
}
}
private void refreshUsableList() {
View title = ll_usable.getChildAt(0);
ll_usable.removeAllViews();
ll_usable.addView(title);
}
private TextView createItem(BluetoothDevice device) {
String key = device.getAddress();
TextView tv_item = new TextView(getActivity());
tv_item.setLayoutParams(params);
tv_item.setBackgroundResource(R.drawable.bg_white);
tv_item.setPadding(padding, padding, padding, padding);
tv_item.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16);
tv_item.setTextColor(getActivity().getResources().getColor(R.color.black));
String value = device.getName();
if (TextUtils.isEmpty(value))
value = key;
tv_item.setText(value);
tv_item.setTag(key);
tv_item.setOnClickListener(onClickListener);
return tv_item;
}
private View.OnClickListener onClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
String tag = (String) v.getTag();
if (onBluetoothClickListener != null) {
BluetoothDevice device = null;
if (matchData.containsKey(tag))
device = matchData.get(tag);
else if (usableData.containsKey(tag))
device = usableData.get(tag);
onBluetoothClickListener.onBluetoothClick(device);
}
}
};
private BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 0);
if (state == BluetoothAdapter.STATE_OFF) {
sw_bluetooth.setChecked(false);
matchData.clear();
usableData.clear();
ll_match.setVisibility(View.GONE);
ll_usable.setVisibility(View.GONE);
} else if (state == BluetoothAdapter.STATE_ON) {
sw_bluetooth.setChecked(true);
loadMatch();
if (ll_usable.getVisibility() == View.GONE)
ll_usable.setVisibility(View.VISIBLE);
refreshUsableList();
bluetoothAdapter.startDiscovery();
}
} else if (action.equals(BluetoothDevice.ACTION_FOUND)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
usableData.put(device.getAddress(), device);
ll_usable.addView(createItem(device));
} else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED)) {
usableData.clear();
if (handler != null) {
handler.obtainMessage(MessageType.MESSAGE_REFRESH_STARTED).sendToTarget();
}
} else if (action.equals(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED)) {
int mode = intent.getIntExtra(BluetoothAdapter.EXTRA_SCAN_MODE, 0);
if (mode == BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
sw_discoverable.setChecked(true);
} else {
sw_discoverable.setChecked(false);
}
} else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
if (handler != null) {
handler.obtainMessage(MessageType.MESSAGE_REFRESH_FINISHED).sendToTarget();
}
}
}
};
/**
* 蓝牙是否可用
*/
private void requestBluetoothEnable() {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent, RequestBluetoothCode);
}
/**
* 蓝牙开放搜索
*/
private void requestBluetoothDiscoverable() {
if (bluetoothAdapter.getScanMode() !=
BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivityForResult(intent, RequestBluetoothDiscoverable);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (RequestBluetoothCode == requestCode) {
if (bluetoothAdapter.isDiscovering())
bluetoothAdapter.cancelDiscovery();
bluetoothAdapter.startDiscovery();
sw_bluetooth.setChecked(-1 == resultCode);
if (-1 != resultCode) {
Toast.makeText(getActivity(), "Open Bluetooth is failed,please open in Setting.",
Toast.LENGTH_SHORT).show();
}
} else if (RequestBluetoothDiscoverable == requestCode) {
sw_discoverable.setChecked(300 == resultCode);
}
}
public void refresh(Handler handler) {
this.handler = handler;
bluetoothAdapter.startDiscovery();
}
@Override
public void onDestroy() {
super.onDestroy();
getActivity().unregisterReceiver(bluetoothReceiver);
}
private OnBluetoothClickListener onBluetoothClickListener = null;
public void setOnBluetoothClickListener(OnBluetoothClickListener onBluetoothClickListener) {
this.onBluetoothClickListener = onBluetoothClickListener;
}
public interface OnBluetoothClickListener {
void onBluetoothClick(BluetoothDevice device);
}
}
