实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
package com.forward.bluetooth;
import java.text.DecimalFormat;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.forward.bluetooth.bluetooth.BluetoothCommService;
import com.forward.bluetooth.bluetooth.BluetoothEnvironment;
import com.forward.bluetooth.bluetooth.ConstantsBluetooth;
import com.forward.bluetooth.bluetooth.ScanBTDeviceActivity;
import com.forward.bluetooth.bluetooth.data.Datagram;
public class MainActivity extends Activity {
private TextView tvSpeed1, tvSpeed2, tvSpeed3, tvSpeed4, tvSpeed5, tvSpeed6;
private ImageView imgSpeed1 = null, imgSpeed2 = null, imgSpeed3 = null, imgSpeed4 = null, imgSpeed5 = null,
imgSpeed6 = null;
private ImageView imgDirectionArrow1, imgDirectionArrow2 = null;
private TextView tvDirection1, tvDirection2;
private ImageView imgTemperature = null, imgTemperaturePilar = null, imgHumidity = null, imgHumidityPilar = null,
imgPressure = null, imgPressurePointer = null;
private TextView tvTemperature, tvHumidity, tvPressure;
private RotateAnimation animSpeed1, animSpeed2, animSpeed3, animSpeed4, animSpeed5, animSpeed6;
private RotateAnimation animDirection1, animDirection2;
private ScaleAnimation animTemperature, animHumidity;
private RotateAnimation animPressure;
private float currentDirection1 = 0, currentDirection2 = 0, currentTemperature = ConstantsEwins.MIN_TEMPERATURE_Y,
currentHumidity = 0.0f, currentPressure = 0;
DecimalFormat df = new DecimalFormat("0.00");
private ImageButton btnOpenBT = null;
private TextView tvDeviceName = null;
private Datagram datagram = new Datagram();
private BluetoothAdapter btAdapter;
private BluetoothDevice mDevice;
private int[] checked = new int[11];
private long exitTime = 0;// 用于再按一次退出
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getBluetoothAdapter();
findAllControls();
initAnimations();
}
private void findAllControls() {
imgSpeed1 = (ImageView) findViewById(R.id.imgSpeed1);
imgSpeed2 = (ImageView) findViewById(R.id.imgSpeed2);
imgSpeed3 = (ImageView) findViewById(R.id.imgSpeed3);
imgSpeed4 = (ImageView) findViewById(R.id.imgSpeed4);
imgSpeed5 = (ImageView) findViewById(R.id.imgSpeed5);
imgSpeed6 = (ImageView) findViewById(R.id.imgSpeed6);
tvSpeed1 = (TextView) findViewById(R.id.tvSpeed1);
tvSpeed2 = (TextView) findViewById(R.id.tvSpeed2);
tvSpeed3 = (TextView) findViewById(R.id.tvSpeed3);
tvSpeed4 = (TextView) findViewById(R.id.tvSpeed4);
tvSpeed5 = (TextView) findViewById(R.id.tvSpeed5);
tvSpeed6 = (TextView) findViewById(R.id.tvSpeed6);
imgDirectionArrow1 = (ImageView) findViewById(R.id.imgDirectionArrow1);
imgDirectionArrow2 = (ImageView) findViewById(R.id.imgDirectionArrow2);
tvDirection1 = (TextView) findViewById(R.id.tvDirection1);
tvDirection2 = (TextView) findViewById(R.id.tvDirection2);
imgTemperature = (ImageView) findViewById(R.id.imgTemperature);
imgTemperaturePilar = (ImageView) findViewById(R.id.imgTemperaturePilar);
imgHumidity = (ImageView) findViewById(R.id.imgHumidity);
imgHumidityPilar = (ImageView) findViewById(R.id.imgHumidityPilar);
imgPressure = (ImageView) findViewById(R.id.imgPressure);
imgPressurePointer = (ImageView) findViewById(R.id.imgPressurePointer);
tvTemperature = (TextView) findViewById(R.id.tvTemperature);
tvHumidity = (TextView) findViewById(R.id.tvHumidity);
tvPressure = (TextView) findViewById(R.id.tvPressure);
btnOpenBT = (ImageButton) findViewById(R.id.btnOpenBT);
btnOpenBT.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(MainActivity.this, ScanBTDeviceActivity.class);
startActivityForResult(intent, ConstantsBluetooth.REQUEST_CONNECT_DEVICE);
}
});
tvDeviceName = (TextView) findViewById(R.id.tvDeviceName);
for (int i = 0; i < 11; i )
checked[i] = View.VISIBLE;
}
private void initAnimations() {
animSpeed1 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed1.setInterpolator(new LinearInterpolator());
animSpeed1.setRepeatCount(-1);
animSpeed1.setFillAfter(true);
animSpeed2 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed2.setInterpolator(new LinearInterpolator());
animSpeed2.setRepeatCount(-1);
animSpeed2.setFillAfter(true);
animSpeed3 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed3.setInterpolator(new LinearInterpolator());
animSpeed3.setRepeatCount(-1);
animSpeed3.setFillAfter(true);
animSpeed4 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed4.setInterpolator(new LinearInterpolator());
animSpeed4.setRepeatCount(-1);
animSpeed4.setFillAfter(true);
animSpeed5 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed5.setInterpolator(new LinearInterpolator());
animSpeed5.setRepeatCount(-1);
animSpeed5.setFillAfter(true);
animSpeed6 = new RotateAnimation(0, -360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animSpeed6.setInterpolator(new LinearInterpolator());
animSpeed6.setRepeatCount(-1);
animSpeed6.setFillAfter(true);
}
private void getBluetoothAdapter() {
btAdapter = BluetoothAdapter.getDefaultAdapter();
if (btAdapter == null) {
Toast.makeText(MainActivity.this, "本设备不支持蓝牙", Toast.LENGTH_SHORT).show();
finish();
return;
}
while (!btAdapter.isEnabled()) {
if (btAdapter.enable()) {
Toast.makeText(MainActivity.this, "蓝牙已经启动", Toast.LENGTH_SHORT).show();
break;
} else {
Toast.makeText(MainActivity.this, "蓝牙启动失败", Toast.LENGTH_SHORT).show();
return;
}
}
if (btAdapter.getScanMode() != BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(intent);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 1, 0, R.string.tianjiachuanganqi);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getOrder() == 0) {
Intent intent = new Intent(MainActivity.this, AddDeleteSensorsActivity.class);
intent.putExtra("checked", checked);
startActivityForResult(intent, ConstantsEwins.REQUEST_ADDDELETE_SENSORS);
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onResume() {
System.out.println("------- ON RESUME ---------");
super.onResume();
if (BluetoothEnvironment.service != null) {
if (btAdapter.isEnabled() && BluetoothEnvironment.service.getState() == ConstantsBluetooth.STATE_NONE) {
BluetoothEnvironment.service.start();
}
BluetoothEnvironment.service.setHandler(mHandler, null);
} else {
BluetoothEnvironment.service = new BluetoothCommService(this, mHandler, null);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case ConstantsBluetooth.REQUEST_CONNECT_DEVICE:
if (resultCode == RESULT_OK) {
String address = data.getExtras().getString(ConstantsBluetooth.DEVICE_ADDRESS);
mDevice = btAdapter.getRemoteDevice(address);
if (mDevice == null)
return;
if (BluetoothEnvironment.service != null)
BluetoothEnvironment.service.connect(mDevice);
}
break;
case ConstantsEwins.REQUEST_ADDDELETE_SENSORS:
if (resultCode == RESULT_OK) {
checked = data.getExtras().getIntArray("checked");
if (View.INVISIBLE == checked[0])
imgSpeed1.clearAnimation();
imgSpeed1.setVisibility(checked[0]);
tvSpeed1.setVisibility(checked[0]);
if (View.INVISIBLE == checked[1])
imgSpeed2.clearAnimation();
imgSpeed2.setVisibility(checked[1]);
tvSpeed2.setVisibility(checked[1]);
if (View.INVISIBLE == checked[2])
imgSpeed3.clearAnimation();
imgSpeed3.setVisibility(checked[2]);
tvSpeed3.setVisibility(checked[2]);
if (View.INVISIBLE == checked[3])
imgSpeed4.clearAnimation();
imgSpeed4.setVisibility(checked[3]);
tvSpeed4.setVisibility(checked[3]);
if (View.INVISIBLE == checked[4])
imgSpeed5.clearAnimation();
imgSpeed5.setVisibility(checked[4]);
tvSpeed5.setVisibility(checked[4]);
if (View.INVISIBLE == checked[5])
imgSpeed6.clearAnimation();
imgSpeed6.setVisibility(checked[5]);
tvSpeed6.setVisibility(checked[5]);
if (View.INVISIBLE == checked[6])
imgDirectionArrow1.clearAnimation();
imgDirectionArrow1.setVisibility(checked[6]);
tvDirection1.setVisibility(checked[6]);
if (View.INVISIBLE == checked[7])
imgDirectionArrow2.clearAnimation();
imgDirectionArrow2.setVisibility(checked[7]);
tvDirection2.setVisibility(checked[7]);
if (View.INVISIBLE == checked[8])
imgTemperaturePilar.clearAnimation();
imgTemperature.setVisibility(checked[8]);
imgTemperaturePilar.setVisibility(checked[8]);
tvTemperature.setVisibility(checked[8]);
if (View.INVISIBLE == checked[9])
imgHumidityPilar.clearAnimation();
imgHumidity.setVisibility(checked[9]);
imgHumidityPilar.setVisibility(checked[9]);
tvHumidity.setVisibility(checked[9]);
if (View.INVISIBLE == checked[10])
imgPressurePointer.clearAnimation();
imgPressure.setVisibility(checked[10]);
imgPressurePointer.setVisibility(checked[10]);
tvPressure.setVisibility(checked[10]);
}
break;
default:
break;
}
}
@SuppressLint("HandlerLeak")
private final Handler mHandler = new Handler() {
int length = 0;
boolean firstReceived = true;
long lastReadTime = System.currentTimeMillis();
StringBuffer sb = new StringBuffer(ConstantsEwins.DATA_LENGTH);
@Override
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case ConstantsBluetooth.MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case ConstantsBluetooth.STATE_CONNECTED:
Toast.makeText(MainActivity.this, "已连接至" msg.obj "!!fdasfds", Toast.LENGTH_SHORT).show();
tvDeviceName.setText((String) msg.obj);
btnOpenBT.setBackgroundResource(R.drawable.bluetooth_on);
break;
case ConstantsBluetooth.STATE_CONNECTING:
Toast.makeText(MainActivity.this, "正在连接，请稍候", Toast.LENGTH_LONG).show();
break;
case ConstantsBluetooth.STATE_LISTEN:
if (ConstantsBluetooth.CONNECTION_FAILED.equals(msg.obj)) {
Toast.makeText(MainActivity.this, "连接不成功", Toast.LENGTH_SHORT).show();
btnOpenBT.setBackgroundResource(R.drawable.bluetooth_off);
} else if (ConstantsBluetooth.CONNECTION_LOST.equals(msg.obj)) {
Toast.makeText(MainActivity.this, "连接丢失", Toast.LENGTH_SHORT).show();
btnOpenBT.setBackgroundResource(R.drawable.bluetooth_off);
}
break;
case ConstantsBluetooth.STATE_NONE:
btnOpenBT.setBackgroundResource(R.drawable.bluetooth_off);
break;
}
break;
case ConstantsBluetooth.MESSAGE_WRITE:
// byte[] writeBuf = (byte[]) msg.obj;
break;
case ConstantsBluetooth.MESSAGE_READ:
if (firstReceived)
lastReadTime = System.currentTimeMillis();
// System.out.println("lastReadTime:" lastReadTime);
firstReceived = false;
if (System.currentTimeMillis() - lastReadTime > ConstantsEwins.DATAGRAM_INTERVAL) {
// System.out.println("超过500毫秒的数据" sb.toString() "长度为"
// length);
if (length == ConstantsEwins.DATAGRAM_BYTES_LENGTH) {
datagram.parseDatagram(sb.toString());
modifyViews();
}
sb = new StringBuffer(ConstantsEwins.DATA_LENGTH);
length = 0;
}
String data = (String) msg.obj;
System.out.println("接收到的数据：" data);
length = msg.arg1;
sb.append(data);
lastReadTime = System.currentTimeMillis();
break;
}
}
};
@SuppressLint("NewApi")
private void modifyViews() {
tvSpeed1.setText("风速1: " df.format(datagram.getSpeed1()) " m/s");
tvSpeed2.setText("风速2: " df.format(datagram.getSpeed2()) " m/s");
tvSpeed3.setText("风速3: " df.format(datagram.getSpeed3()) " m/s");
tvSpeed4.setText("风速4: " df.format(datagram.getSpeed4()) " m/s");
tvSpeed5.setText("风速5: " df.format(datagram.getSpeed5()) " m/s");
tvSpeed6.setText("风速6: " df.format(datagram.getSpeed6()) " m/s");
tvDirection1.setText("风向1: " (datagram.getDirection1() - (datagram.getDirection1() / 360) * 360) "°");
tvDirection2.setText("风向2: " (datagram.getDirection2() - (datagram.getDirection2() / 360) * 360) "°");
tvTemperature.setText("温度: " df.format(datagram.getTemperature()) " ℃");
tvHumidity.setText("湿度: " datagram.getHumidity() " %");
tvPressure.setText("气压: " df.format(datagram.getPressure()) " kPa");
// 风速改变
long newDuration;
newDuration = calcSpeedDuration(datagram.getSpeed1());
if (animSpeed1.getDuration() != newDuration) {
animSpeed1.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed1.getVisibility()) {
imgSpeed1.clearAnimation();
imgSpeed1.startAnimation(animSpeed1);
}
}
newDuration = calcSpeedDuration(datagram.getSpeed2());
if (animSpeed2.getDuration() != newDuration) {
animSpeed2.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed2.getVisibility()) {
imgSpeed2.clearAnimation();
imgSpeed2.startAnimation(animSpeed1);
}
}
newDuration = calcSpeedDuration(datagram.getSpeed3());
if (animSpeed3.getDuration() != newDuration) {
animSpeed3.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed3.getVisibility()) {
imgSpeed3.clearAnimation();
imgSpeed3.startAnimation(animSpeed3);
}
}
newDuration = calcSpeedDuration(datagram.getSpeed4());
if (animSpeed4.getDuration() != newDuration) {
animSpeed4.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed4.getVisibility()) {
imgSpeed4.clearAnimation();
imgSpeed4.startAnimation(animSpeed4);
}
}
newDuration = calcSpeedDuration(datagram.getSpeed5());
if (animSpeed5.getDuration() != newDuration) {
animSpeed5.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed5.getVisibility()) {
imgSpeed5.clearAnimation();
imgSpeed5.startAnimation(animSpeed5);
}
}
newDuration = calcSpeedDuration(datagram.getSpeed6());
if (animSpeed6.getDuration() != newDuration) {
animSpeed6.setDuration(newDuration);
if (View.INVISIBLE != imgSpeed6.getVisibility()) {
imgSpeed6.clearAnimation();
imgSpeed6.startAnimation(animSpeed6);
}
}
// 风向改变
animDirection1 = new RotateAnimation(currentDirection1, datagram.getDirection1(), Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animDirection1.setDuration(500);
animDirection1.setFillAfter(true);
animDirection2 = new RotateAnimation(currentDirection2, datagram.getDirection2(), Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animDirection2.setDuration(500);
animDirection2.setFillAfter(true);
if (View.INVISIBLE != imgDirectionArrow1.getVisibility())
imgDirectionArrow1.startAnimation(animDirection1);
if (View.INVISIBLE != imgDirectionArrow2.getVisibility())
imgDirectionArrow2.startAnimation(animDirection2);
currentDirection1 = datagram.getDirection1();
currentDirection2 = datagram.getDirection2();
// 温度、湿度和气压
float newTemperature = (datagram.getTemperature() - ConstantsEwins.MIN_TEMPERATURE_VALUE)
* ConstantsEwins.TEMPERATURE_STEP ConstantsEwins.MIN_TEMPERATURE_Y;
float newHumidity = datagram.getHumidity() * ConstantsEwins.HUMIDITY_STEP ConstantsEwins.MIN_HUMIDITY_Y;
float newPressure = (datagram.getPressure() - ConstantsEwins.MIN_PRESSURE_VALUE) * ConstantsEwins.PRESSURE_STEP;
animTemperature = new ScaleAnimation(1.0f, 1.0f, currentTemperature, newTemperature,
Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0.8f);
animTemperature.setDuration(500);
animTemperature.setFillAfter(true);
animHumidity = new ScaleAnimation(1.0f, 1.0f, currentHumidity, newHumidity, Animation.RELATIVE_TO_SELF, 0,
Animation.RELATIVE_TO_SELF, 0.8f);
animHumidity.setDuration(500);
animHumidity.setFillAfter(true);
animPressure = new RotateAnimation(currentPressure, newPressure, Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
animPressure.setDuration(500);
animPressure.setFillAfter(true);
if (View.INVISIBLE != imgTemperaturePilar.getVisibility())
imgTemperaturePilar.startAnimation(animTemperature);
if (View.INVISIBLE != imgHumidityPilar.getVisibility())
imgHumidityPilar.startAnimation(animHumidity);
if (View.INVISIBLE != imgPressurePointer.getVisibility())
imgPressurePointer.startAnimation(animPressure);
currentTemperature = newTemperature;
currentHumidity = newHumidity;
currentPressure = newPressure;
}
private long calcSpeedDuration(float speed) {
int level;
if (speed < 1.5f)
level = 1;
else if (speed > 1.6 && speed < 5.4)
level = 2;
else if (speed > 5.5 && speed < 7.9)
level = 3;
else if (speed > 8.0 && speed < 10.7)
level = 4;
else if (speed > 10.8 && speed < 13.8)
level = 5;
else if (speed > 13.9 && speed < 17.1)
level = 6;
else if (speed > 17.2 && speed < 20.7)
level = 7;
else if (speed > 20.8 && speed < 24.4)
level = 8;
else if (speed > 24.5 && speed < 28.4)
level = 9;
else if (speed > 28.5 && speed < 32.6)
level = 10;
else
level = 11;
long duration;
duration = (11 - level) * ConstantsEwins.SPEED_DURATION_STEP ConstantsEwins.MIN_SPEED_DURATION;
return duration;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
if ((System.currentTimeMillis() - exitTime) > 2000) {
Toast.makeText(this, "再按一次退出程序", Toast.LENGTH_SHORT).show();
exitTime = System.currentTimeMillis();
} else {
finish();
System.exit(0);
}
return true;
}
return super.onKeyDown(keyCode, event);
}
}
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