我需要更新textview，这是view pager adpater的片段
我在viewpager适配器中有2个片段。 和适配器本身在片段内。 主片段从MainActivity初始化。
我使用Greenrobot方法。在runtime.i上更新textview值。获取该值但UI闪烁意味着没有获得良好的UI。
所以我应该采用另一种方法，请建议我。
适配器代码： -
public class SamplePagerAdapter extends FragmentPagerAdapter {
private final Random random = new Random();
private int mSize = 2;
private int heart_rate;
FragmentManager fm;
public SamplePagerAdapter(FragmentActivity activity, FragmentManager supportFragmentManager, int heart) {
super(supportFragmentManager);
fm = supportFragmentManager;
heart_rate = heart;
}
@Override
public int getCount() {
return mSize;
}
@Override
public Fragment getItem(int position) {
Fragment f = null;
if (position == 0) {
f = new MyFragment();
} else if (position == 1) {
f = new SecondFragment();
}
return f;
}
public int getItemPosition(Object object) {
return POSITION_NONE;
}
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
fm.beginTransaction()
.replace(R.id.fragment_container, fragment)
.addToBackStack(null)
.commit();
return true;
}
return false;
}
}
//code for loading main Fragment:-MeasureFragment
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
Bundle bundle = new Bundle();
bundle.putString("ble_address",bleAddress);
fragment.setArguments(bundle);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragment_container,fragment)
.addToBackStack(null)
.commit();
return true;
}
return false;
}
//还添加了度量片段代码： -
public class MeasureFragment extends Fragment implements ISmctAlgoCallback, IBleOperateCallback {
protected boolean measureSwitch = false;
private EcgAlgo ecgAlgo;
private BluetoothLeService mBluetoothLeService;
protected ProgressDialog mProgressDialog;
protected boolean isContecting = false;
private TextView btn_start;
private TextView tv_heartrate, tv_time, tv_pauseorresume;
private RelativeLayout linear, linear1;
private LinearLayout linear_pause, linear_stop;
private CountDownTimer timer;
private int count = 0;
private boolean running;
private Handler handler;
Runnable runnable;
ImageView iv_pauseorresume;
private boolean onclick = true;
private boolean isstop = false;
private String bleAddress;
View view1, view2, view3, view4, view5;
TextView tv_toolbar_title, tv_alarm_setting, tv_battery_percentage;
private int heart_rate;
SamplePagerAdapter samplePagerAdapter;
private FragmentActivity myContext;
ViewPager viewpager;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_measure, container, false);
bleAddress = getArguments().getString("ble_address");
viewpager = (ViewPager) view.findViewById(R.id.viewpager);
CircleIndicator indicator = (CircleIndicator) view.findViewById(R.id.indicator);
btn_start = (TextView) view.findViewById(R.id.btn_start);
linear = (RelativeLayout) view.findViewById(R.id.linear);
linear1 = (RelativeLayout) view.findViewById(R.id.linear1);
linear_pause = (LinearLayout) view.findViewById(R.id.linear_pause);
linear_stop = (LinearLayout) view.findViewById(R.id.linear_stop);
tv_heartrate = (TextView) view.findViewById(R.id.tv_heart_rate);
tv_toolbar_title = (TextView) view.findViewById(R.id.tv_toolbar_title);
tv_alarm_setting = (TextView) view.findViewById(R.id.tv_alarm_setting);
tv_battery_percentage = (TextView) view.findViewById(R.id.tv_battery_percentage);
view1 = (View) view.findViewById(R.id.view1);
view2 = (View) view.findViewById(R.id.view2);
view3 = (View) view.findViewById(R.id.view3);
view4 = (View) view.findViewById(R.id.view4);
view5 = (View) view.findViewById(R.id.view5);
iv_pauseorresume = (ImageView) view.findViewById(R.id.iv_pauseorresume);
tv_pauseorresume = (TextView) view.findViewById(R.id.btn_pause);
tv_time = (TextView) view.findViewById(R.id.time);
ecgAlgo = new EcgAlgo();
ecgAlgo.setISmctAlgoCallback(this);
handler = new Handler();
samplePagerAdapter = new SamplePagerAdapter(getActivity(), getChildFragmentManager(), heart_rate);
viewpager.setAdapter(samplePagerAdapter);
indicator.setViewPager(viewpager);
viewpager.setCurrentItem(0);
linear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (isstop) {
measureSwitch = true;
linear1.setVisibility(View.VISIBLE);
linear.setVisibility(View.GONE);
handler.post(runnable = new Runnable() {
@Override
public void run() {
int hours = count / 3600;
int minutes = (count % 3600) / 60;
int sec = count % 60;
String time = String.format("%02d:%02d:%02d", hours, minutes, sec);
tv_time.setText(time);
if (running) {
count++;
}
handler.postDelayed(this, 1000);
}
});
} else {
connectBle();
running = true;
}
}
});
linear_stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ecgAlgo.clearECGParam();
isstop = true;
measureSwitch = false;
count = 0;
handler.removeCallbacks(runnable);
linear1.setVisibility(View.GONE);
linear.setVisibility(View.VISIBLE);
}
});
linear_pause.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (onclick) {
iv_pauseorresume.setImageResource(R.drawable.resume1);
tv_pauseorresume.setText("Resume");
running = false;
onclick = false;
} else {
onclick = true;
running = true;
iv_pauseorresume.setImageResource(R.drawable.pause);
tv_pauseorresume.setText("Pause");
}
}
});
return view;
}
private void connectBle() {
if (TextUtils.isEmpty(bleAddress)) {// 蓝牙地址为空
showToast(R.string.ble_address_empty);
} else if (mBluetoothLeService != null && !isContecting) {// 蓝牙未连接
showDialog();
mBluetoothLeService.connect(bleAddress);
measureSwitch = true;
} else if (mBluetoothLeService == null) {// 连接服务
connectBleService();
} else {// 其它
disDialog();
showToast(R.string.ble_connect_fail);
}
}
/**
* 连接蓝牙服务
*/
public void connectBleService() {
Intent gattServiceIntent = new Intent(getActivity(), BluetoothLeService.class);
getActivity().bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);
}
@Override
public void bleData(short key, short value) {
// TODO Auto-generated method stub
switch (key) {
case SmctConstant.KEY_BLE_CONNECT_STATE:// 连接状态改变
if (SmctConstant.VALUE_BLE_CONNECTED == value) {// 已连接
// hasReConnectCount = 0;
//updateNotification(getString(R.string.notification_nomal));
} else if (SmctConstant.VALUE_BLE_DISCONNECTED == value) {// 连接断开
disDialog();
if (isContecting) {//如果已连接 提示设备以断开连接
showToast(R.string.ble_connect_disconnect);
} else {//没有连接 提示连接失败
//showToast(R.string.ble_connect_fail);
}
isContecting = false;
//changeButtonSate(isContecting);
//changeSwitchView(false);
} else if (SmctConstant.VALUE_BLE_SERVICE_DISCOVERED == value) {// 发现服务
if (mBluetoothLeService != null) {
mBluetoothLeService.setCharacteristic(mBluetoothLeService.getSupportedGattServices(),
SmctConstant.UUID_KEY_DATA_FFE2);
}
disDialog();
isContecting = true;
//changeButtonSate(isContecting);
//changeSwitchView(false);
showToast(R.string.ble_connect_success);
}
break;
case SmctConstant.KEY_DEVICE_POWER_LEVEL:// 电量
//refrashPowerLevel(value);
//Log.d("power leve", "" + value);
break;
case SmctConstant.KEY_DEVICE_ELECTRODE_DROP:// 电极脱落
if (measureSwitch)
showToast("Elctrode Dropout！！！");
break;
case SmctConstant.KEY_ECG_DATA:// ecg数据
// 正在测量中
if (measureSwitch) {
//refrashEcgData(value);
//Log.d("Ecg data", "" + value);
//算法计算
ecgAlgo.addECGParam(value);
}
break;
case SmctConstant.KEY_BODY_POSE:// 姿态
if (value == SmctConstant.VALUE_POSE_WALK) {
//refrashPose("go");
Log.d("pose", "go");
} else if (value == SmctConstant.VALUE_POSE_FALL_DOWN) {
showToast("Falls!!!!!!");
Log.d("pose", "Falls");
} else if (value == SmctConstant.VALUE_POSE_LIE_LOW) {
//refrashPose("Flat lay");
Log.d("pose", "Flat lay");
} else if (value == SmctConstant.VALUE_POSE_STAND) {
//refrashPose("Flat lay");
Log.d("pose", "Standing");
} else if (value == SmctConstant.VALUE_POSE_SIDE_DECUBITUS) {
Log.d("pose", "Standing");
}
break;
}
}
@Override
public void bleData(short key, float[] value) {
if (SmctConstant.KEY_ACC_DATA == key) {
//refreshAccData(value);
}
}
/**
* 算法数据
*/
@Override
public void algoData(final int key, final int value) {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
switch (key) {
case SmctConstant.KEY_ALGO_HEART_RATE:// 心率
//tv_heartrate.setText(String.valueOf(value));
//arc_progress.setProgress(value);
//heart_rate=value;
// Bundle bundle = new Bundle();
//bundle.putInt("heart_rate", value);
//fragment.setArguments(bundle);
heart_rate = value;
Bundle bundle=new Bundle();
bundle.putInt("heart_rate",value);
samplePagerAdapter.getItem(0).setArguments(bundle);
//notifyViewPagerDataSetChanged();
break;
case SmctConstant.KEY_ALGO_ARRHYTHMIA:// 心律失常
//tvArr.setText(formatString(R.string.arrhythmia, value));
break;
}
}
});
}
public ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService();
if (!mBluetoothLeService.initialize()) {
// LogUtil.e("smctservice", "Unable to initialize Bluetooth");
// mHandler.sendEmptyMessage(MSG_BLE_UNINIT);
} else {
mBluetoothLeService.setBleOperate(MeasureFragment.this);
connectBle();
}
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
// LogUtil.e("smctservice", "onServiceDisconnected");
mBluetoothLeService = null;
}
};
private void notifyViewPagerDataSetChanged() {
Log.d(TAG, "\nnotifyDataSetChanged()");
samplePagerAdapter.notifyDataSetChanged();
}
protected void disDialog() {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
if (mProgressDialog != null) {
mProgressDialog.dismiss();
linear.setVisibility(View.GONE);
linear1.setVisibility(View.VISIBLE);
//new MyCountDownTimer(System.currentTimeMillis(),1000).start();
}
handler.post(runnable = new Runnable() {
@Override
public void run() {
int hours = count / 3600;
int minutes = (count % 3600) / 60;
int sec = count % 60;
String time = String.format("%02d:%02d:%02d", hours, minutes, sec);
tv_time.setText(time);
if (running) {
count++;
}
handler.postDelayed(this, 1000);
}
});
}
});
}
protected void showToast(String msg) {
ToastUtils.showToast(getActivity(), msg);
}
/**
* 统一显示toast管理
*/
protected void showToast(int id) {
ToastUtils.showToast(getActivity(), getResources().getString(id));
}
/**
* 显示连接蓝牙dialog
*/
protected void showDialog() {
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
mProgressDialog = null;
}
mProgressDialog = new ProgressDialog(getActivity());
mProgressDialog.setMessage(getResources().getString(R.string.text_conn_ble));
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.show();
}
}
需要更新textview已经讨论过。在这个片段中。
public class MyFragment extends Fragment {
private int heart_rate;
private ArcProgress arc_progress;
private TextView tv_heartrate;
private Handler handler;
private Runnable runnable;
private View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saveBundle) {
view = inflater.inflate(R.layout.ecg_layout, container, false);
arc_progress = (ArcProgress) view.findViewById(R.id.arc_progress);
tv_heartrate = (TextView) view.findViewById(R.id.tv_heart_rate);
handler = new Handler();
handler.post(runnable = new Runnable() {
@Override
public void run() {
Log.d("heartrate", "" + heart_rate);
arc_progress.setProgress(heart_rate);
tv_heartrate.setText(String.valueOf(heart_rate));
handler.postDelayed(this, 1000);
}
});
return view;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}