工作遇到的问题
bug
e品通讯模板：资料设置，修改头像失败
话时代：语音验证 混淆问题
eclipse 布局不显示：api过低，不支持显示editView
eclipse 导入第三方包报classnotfind 打开build path ，把导入的第三方包打钩就可以了
Error generating final archive: Found duplicate file fogr APK: classes.dex
hashmap的key获取方法
invalidate 重新绘制调用者
String.substring：定义一个String类型的变量去存储number截取第i个位置到第i+1个位置的字符串
java 转大小写toLowerCase
scrollview嵌套listview
//自定义listview,修改了长度测量方式，解决scrollview嵌套listview只显示一个item问题import android.content.Context;import android.util.AttributeSet;import android.view.View.MeasureSpec;import android.widget.ListView;public class MyListView extends ListView {public MyListView(Context context) {super(context);}public MyListView(Context context, AttributeSet attrs) {super(context, attrs);}public MyListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}@Overridepublic void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,MeasureSpec.AT_MOST);super.onMeasure(widthMeasureSpec, expandSpec);}}
listview item点击事件失效 http://www.cnblogs.com/dj168/p/3950890.html
调用系统发送短信：
Uri smsToUri = Uri.parse("smsto:10000");Intent intent = new Intent(Intent.ACTION_SENDTO, smsToUri);intent.putExtra("sms_body", smsBody);startActivity(intent);
调用系统新增联系人
Intent intent = new Intent(Intent.ACTION_INSERT);intent.setType("vnd.android.cursor.dir/person");intent.setType("vnd.android.cursor.dir/contact");intent.setType("vnd.android.cursor.dir/raw_contact");mContext.startActivity(intent);
除了报错，还有可能是报异常
如果没有达到如期效果，要找报错信息，或者异常信息
测量控件的高度
int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);mNumBarAndKeyboardLl.measure(w, h);int height = mNumBarAndKeyboardLl.getMeasuredHeight();int width = mNumBarAndKeyboardLl.getMeasuredWidth();s
glide使用
Glide.with(this).load("http://inthecheesefactory.com/uploads/source/nestedfragment/fragments.png").placeholder(R.mipmap.ic_launcher) // 也可以是一个drawable，加载时的图片.error(R.mipmap.future_studio_launcher)//错误时的图片.into(imageView);
时间日期的转换
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");// 小写的mm表示的是分钟// 有效期的期限Date endDate = sdf.parse(valid_time);Calendar calendar = Calendar.getInstance();calendar.setTime(endDate);calendar.add(Calendar.YEAR, -1);// 有限期往前1年Date startDate = calendar.getTime();SimpleDateFormat sf = new SimpleDateFormat("yyyy年MM月dd日");String endTime = sf.format(endDate);String startTime = sf.format(startDate);
按键音 ToneGenerator
倒计时
// 倒计时private void startCountDownTime(final long time) {timer = new CountDownTimer((time + 2) * 1000, 1000) {@Overridepublic void onTick(long millisUntilFinished) {}@Overridepublic void onFinish() {if (mDataList != null) {Intent splashAd = new Intent(SplashActivity.this,SplashAdActivity.class);splashAd.putStringArrayListExtra("list", mDataList);startActivity(splashAd);} else {if ("".equals(mPhoneNum) && "".equals(mPwd)) {Intent login = new Intent(SplashActivity.this,LoginActivity.class);startActivity(login);} else {Intent dialer = new Intent(SplashActivity.this,DialerActivity.class);startActivity(dialer);}}finish();}};timer.start();// 开始计时// timer.cancel(); // 取消}
固定竖屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
拼音工具类辨识不了乱码的字
小米6 获取通讯录号码有间隔
// 按返回键不退出应用@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {Intent i = new Intent(Intent.ACTION_MAIN);i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);i.addCategory(Intent.CATEGORY_HOME);startActivity(i);return true;}return super.onKeyDown(keyCode, event);}
webView
private class WebChromeClientImpl extends WebChromeClient {private String mTitle;private WebChromeClientImpl() {}// 获取网址的标题@Overridepublic void onReceivedTitle(WebView view, String title) {mTitle = title;super.onReceivedTitle(view, title);}// 判断加载情况public void onProgressChanged(WebView paramWebView, int paramInt) {if ((paramInt == 0) || (paramInt == 100)) {mTvTitel.setText(mTitle);} else {mTvTitel.setText("加载中···");}super.onProgressChanged(paramWebView, paramInt);}}mWebView.setWebViewClient(new WebViewClient() {@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {Log.v("simon", "url:" + url);if (url != null && url.contains("tel:")) {Intent dialIntent = new Intent(Intent.ACTION_CALL, Uri.parse(url));startActivity(dialIntent);return true;}return super.shouldOverrideUrlLoading(view, url);}@Overridepublic void onPageFinished(WebView view, String url) {String title = view.getTitle();if (title == null) {title = "";}mTvTitel.setText(title);super.onPageFinished(view, url);}});
svn
出现报错，报错有冲突，但是查看了文件没有发现冲突，可以先把文件删除，然后再恢复，就可以解决问题
点击空白时隐藏键盘
@Overridepublic boolean dispatchTouchEvent(MotionEvent event) {if (event.getAction() == MotionEvent.ACTION_DOWN&& getCurrentFocus() != null&& getCurrentFocus().getWindowToken() != null) {View v = getCurrentFocus();if (isShouldHideKeyboard(v, event)) {hideKeyboard(v.getWindowToken());}}return super.dispatchTouchEvent(event);}/*** 根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘，因为当用户点击EditText时则不能隐藏*/private boolean isShouldHideKeyboard(View v, MotionEvent event) {if (v != null && (v instanceof EditText)) {int[] l = { 0, 0 };v.getLocationOnScreen(l);int left = l[0], top = l[1], bottom = top + v.getHeight(), right = left+ v.getWidth();if (event.getRawX() > left && event.getRawX() < right&& event.getRawY() > top && event.getRawY() < bottom) {// 点击EditText的事件，忽略它。return false;} else {return true;}}// 如果焦点不是EditText则忽略，这个发生在视图刚绘制完，第一个焦点不在EditText上，和用户用轨迹球选择其他的焦点return false;}/*** 获取InputMethodManager，隐藏软键盘*/private void hideKeyboard(IBinder token) {if (token != null) {InputMethodManager mInputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);mInputMethodManager.hideSoftInputFromWindow(token,InputMethodManager.HIDE_NOT_ALWAYS);}}
EventBus
发送消息EventBus.getDefault().post(new MessageBean("DialActivity", 0));注册EventBus.getDefault().register(this);接收消息@Subscribe(threadMode = ThreadMode.MAIN)public void messageEventBus(MessageBean event) {}反注册EventBus.getDefault().unregister(this);
多线程进行不要只能更新数据，不要同时更新ui，会没有效果
requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏
今天突然发现一个bug，自己的EditText在删除内容时，总会触发Activity的返回事件，可是昨天明明是好好的。于是调试一番才突然醒悟：原来是我今天重写了onKeyDown监听，但是忘记过滤KeyCode了，如此简单……
public boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {//返回事件}}
软键盘的删除键，会触发onKeyDown事件监听，这里的keyCode == KeyEvent.KEYCODE_DEL，如果不过滤，当然出错。
eventbus 执行了两次
webview适应屏幕
myWebView.getSettings().setUseWideViewPort(true);myWebView.getSettings().setLoadWithOverviewMode(true);
更新显示
androidMenifest里的verisionname代表更新时的版本状态
监听电话状态
// phoneServiceName是服务名，一般是 "phone" -->// Context.TELEPHONY_SERVICETelephonyManager telephony = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);telephony.listen(new OnePhoneStateListener(),PhoneStateListener.LISTEN_CALL_STATE);// /**// * 电话状态监听.// *// * @author stephen// *// */class OnePhoneStateListener extends PhoneStateListener {@Overridepublic void onCallStateChanged(int state, String incomingNumber) {switch (state) {case TelephonyManager.CALL_STATE_RINGING:finish();break;case TelephonyManager.CALL_STATE_IDLE:break;case TelephonyManager.CALL_STATE_OFFHOOK:finish();break;}super.onCallStateChanged(state, incomingNumber);}}
三星插入通话记录(必须写全，其他品牌可以不用写全)
ContentValues _ContentValues = new ContentValues();_ContentValues.put(CallLog.Calls.NUMBER, number);_ContentValues.put(CallLog.Calls.DATE, System.currentTimeMillis());_ContentValues.put(CallLog.Calls.TYPE, CallLog.Calls.OUTGOING_TYPE);_ContentValues.put(CallLog.Calls.DURATION, 1000);_ContentValues.put(CallLog.Calls.NEW, 1);_ContentValues.put(CallLog.Calls.CACHED_NUMBER_TYPE, 0);_ContentValues.put(CallLog.Calls.CACHED_NUMBER_LABEL, "");_ContentValues.put(CallLog.Calls.CACHED_NAME, name);c.getContentResolver().insert(CallLog.Calls.CONTENT_URI, _ContentValues);
蒲公英，app发布平台
ScrollView嵌套ListView显示不全
//继承livtview，重写onMeasure方法public class MyListView extends ListView {public MyListView(Context context) {super(context);}public MyListView(Context context, AttributeSet attrs) {super(context, attrs);}public MyListView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}@Overridepublic void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,MeasureSpec.AT_MOST);super.onMeasure(widthMeasureSpec, expandSpec);}}
getSupportFragmentManager爆红
您要让Activity继承自FragmentActivity，这个类在support包中。。。
bugly
1.导入jar包2.添加权限3.添加混淆规则-dontwarn com.tencent.bugly.**-keep public class com.tencent.bugly.**{*;}4.初始化CrashReport.initCrashReport(getApplicationContext(), "注册时申请的APPID", false);5.测试CrashReport.testJavaCrash();
glide实现圆角图片
http://www.jianshu.com/p/7cd815b5da42
时间戳
要改为时间日期显示，必须是13位的时间戳，如果是10位只需乘以1000
动态申请权限
1.导包 permission-lib.jar//2. 动态申请权限MPermissions.requestPermissions(VIVOLauncherActivity.this, 0,Manifest.permission.READ_CONTACTS,Manifest.permission.WRITE_CONTACTS,Manifest.permission.READ_CALL_LOG,Manifest.permission.WRITE_CALL_LOG);3.必须targetservion为23
Android VersionCode和VersionName的作用
http://blog.csdn.net/liranke/article/details/50748769
微信sdk
支付：1.检查所有的配置信息，所有！2.上平台检查所有的配置信息，所有！3.检查返回的订单信息4.微信的坑：第一次支付失败后，微信会记录调用他app的缓存信息，后面修改后重新打包同样会支付失败，需要登录另一个微信号，或者清楚微信所有缓存数据后，才能重新测试分享调不起微信：检查 mWxApi.sendReq(req)回调，如果返回true才能正常调起。原因：1.配置信息错误（app_id,api_key,app_key,包名是否正确，签名是否正确）。2.分享的图片不能超过32k（实验证明，万通通讯的图标20.4也是不行，现在用的18.1才行）；
Android(安卓)时间戳和日期之间的转化
http://blog.csdn.net/xiaocheng2290/article/details/73616072
滚动字幕
4种方式：1.android:id="@+id/dialer_scroll_text_tv"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:background="#33000000"android:ellipsize="marquee"android:gravity="center"android:marqueeRepeatLimit="marquee_forever"android:singleLine="true"android:textColor="@color/white"android:textSize="18sp" />一开始就显示字幕，字数不超过范围就不会滚动，滚动速度中，不能修改2.android:id="@+id/tv_rolltext"android:layout_width="250.dip"android:layout_height="wrap_content"android:layout_centerInParent="true"android:layout_centerVertical="true"android:ellipsize="marquee"android:gravity="center"android:marqueeRepeatLimit="marquee_forever"android:singleLine="true"android:text="@string/app_name"android:textColor="@color/white"android:textSize="20sp" />import android.content.Context;import android.util.AttributeSet;import android.widget.TextView;public class MyDefineTextView extends TextView {public MyDefineTextView(Context context) {super(context);}public MyDefineTextView(Context context, AttributeSet attrs) {super(context, attrs);}public MyDefineTextView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}@Overridepublic boolean isFocused() {return true;}}一开始显示字幕，长度短于设定就不滚动，滚动速度中，不可修改3.android:id="@+id/home_rolltext"android:layout_width="match_parent"android:layout_height="40dip"android:layout_gravity="center_vertical"android:ellipsize="marquee"android:singleLine="true"android:text=""android:textColor="@color/white"android:textSize="25.0dip" />package com.jiayin.utils;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Paint.FontMetricsInt;import android.graphics.Rect;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.widget.TextView;public class MarqueeTextView extends TextView {/** 是否停止滚动 */private boolean mStopMarquee;private String mText;private float mCoordinateX;private float mTextWidth;private Rect targetRect;private Paint paint;private FontMetricsInt fontMetrics;private float fFontHeight;private float fLineHeight;private float baseline;public MarqueeTextView(Context context, AttributeSet attrs) {super(context, attrs);Paint paint = getPaint();FontMetricsInt fontMetrics = paint.getFontMetricsInt();fFontHeight = (float) Math.ceil(fontMetrics.descent- fontMetrics.ascent);fLineHeight = (float) Math.ceil(fontMetrics.bottom - fontMetrics.top);/* 设置字体的位置，y轴位置 */if (fLineHeight > fFontHeight) {baseline = (fLineHeight - fFontHeight) / 2 + fFontHeight- fontMetrics.bottom+ (fontMetrics.ascent - fontMetrics.top);} else {baseline = 26;}}public void setText(String text) {// Rect targetRect = new Rect(50, 50, 1000, 200);// Paint paint = getPaint();// Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);// FontMetricsInt fontMetrics = paint.getFontMetricsInt();// baseline = targetRect.top + (targetRect.bottom - targetRect.top -// fontMetrics.bottom + fontMetrics.top) / 2 - fontMetrics.top;// baseline = fontMetrics.ethis.mText = text;mTextWidth = getPaint().measureText(mText);if (mHandler.hasMessages(0))mHandler.removeMessages(0);mHandler.sendEmptyMessageDelayed(0, 2000);}@Overrideprotected void onAttachedToWindow() {mStopMarquee = false;if (null != mText)mHandler.sendEmptyMessageDelayed(0, 2000);super.onAttachedToWindow();}@Overrideprotected void onDetachedFromWindow() {mStopMarquee = true;if (mHandler.hasMessages(0))mHandler.removeMessages(0);super.onDetachedFromWindow();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);if (null != mText) {canvas.drawText(mText, mCoordinateX, baseline, getPaint());}}private Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 0:if (Math.abs(mCoordinateX) > (mTextWidth + 5)) {mCoordinateX = 50;invalidate();if (!mStopMarquee) {sendEmptyMessageDelayed(0, 500);}} else {// 调节速度mCoordinateX -= 1.2;invalidate();if (!mStopMarquee) {sendEmptyMessageDelayed(0, 30);}}break;}super.handleMessage(msg);}};}自定义控件，暂时未清楚原理，速度能修改，一开始显示，是否滚动不能调4.AutoScrollTextViewpackage com.jiayin.ui;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Paint;import android.os.Parcel;import android.os.Parcelable;import android.util.AttributeSet;import android.view.Display;import android.view.View;import android.view.View.OnClickListener;import android.view.WindowManager;import android.widget.TextView;import com.mimi7038.R;public class AutoScrollTextView extends TextView implements OnClickListener {public final static String TAG = AutoScrollTextView.class.getSimpleName();private float textLength = 0f;// 文本长度private float viewWidth = 0f;private float step = 0f;// 文字的横坐标private float y = 0f;// 文字的纵坐标private float temp_view_plus_text_length = 0.0f;// 用于计算的临时变量private float temp_view_plus_two_text_length = 0.0f;// 用于计算的临时变量public boolean isStarting = false;// 是否开始滚动private Paint paint = null;// 绘图样式private String text = "";// 文本内容private Context mContext;private int textColor;private float scrollSpeed;private boolean clickable;public AutoScrollTextView(Context context) {super(context);this.mContext = context;initView();}public AutoScrollTextView(Context context, AttributeSet attrs) {super(context, attrs);this.mContext = context;TypedArray attributes = context.obtainStyledAttributes(attrs,R.styleable.AutoScrollTextView);// 颜色属性textColor = attributes.getColor(R.styleable.AutoScrollTextView_text_color, 0XFFFFFFFF);// 滚动速度scrollSpeed = attributes.getFloat(R.styleable.AutoScrollTextView_scroll_speed, 1);clickable = attributes.getBoolean(R.styleable.AutoScrollTextView_clickable, true);initView();}public AutoScrollTextView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);this.mContext = context;initView();}private void initView() {if (clickable) {setOnClickListener(this);}}public void init(WindowManager windowManager) {paint = getPaint();// 修改文字颜色paint.setColor(textColor);text = getText().toString();textLength = paint.measureText(text);viewWidth = getWidth();if (viewWidth == 0) {if (windowManager != null) {Display display = windowManager.getDefaultDisplay();viewWidth = display.getWidth();}}step = textLength;temp_view_plus_text_length = viewWidth + textLength;temp_view_plus_two_text_length = viewWidth + textLength * 2;y = getTextSize() + getPaddingTop();// 默认滚动startScroll();}@Overridepublic Parcelable onSaveInstanceState() {Parcelable superState = super.onSaveInstanceState();SavedState ss = new SavedState(superState);ss.step = step;ss.isStarting = isStarting;return ss;}@Overridepublic void onRestoreInstanceState(Parcelable state) {if (!(state instanceof SavedState)) {super.onRestoreInstanceState(state);return;}SavedState ss = (SavedState) state;super.onRestoreInstanceState(ss.getSuperState());step = ss.step;isStarting = ss.isStarting;}public static class SavedState extends BaseSavedState {public boolean isStarting = false;public float step = 0.0f;SavedState(Parcelable superState) {super(superState);}@Overridepublic void writeToParcel(Parcel out, int flags) {super.writeToParcel(out, flags);out.writeBooleanArray(new boolean[] { isStarting });out.writeFloat(step);}public static final Parcelable.CreatorCREATOR = new Parcelable.Creator () { public SavedState[] newArray(int size) {return new SavedState[size];}@Overridepublic SavedState createFromParcel(Parcel in) {return new SavedState(in);}};private SavedState(Parcel in) {super(in);boolean[] b = null;in.readBooleanArray(b);if (b != null && b.length > 0)isStarting = b[0];step = in.readFloat();}}public void startScroll() {isStarting = true;invalidate();}public void stopScroll() {isStarting = false;invalidate();}@Overridepublic void onDraw(Canvas canvas) {canvas.drawText(text, temp_view_plus_text_length - step, y, paint);if (!isStarting) {return;}step += scrollSpeed;// 0.5为文字滚动速度。if (step > temp_view_plus_two_text_length)step = textLength;invalidate();}@Overridepublic void onClick(View v) {if (isStarting)stopScroll();elsestartScroll();}}attrs使用xmlandroid:id="@+id/TextViewNotice"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_centerInParent="true"android:layout_centerVertical="true"android:layout_marginLeft="20dp"android:layout_marginRight="20dp"android:inputType="text"android:text=""android:textSize="20sp"myview:clickable="false"myview:scroll_speed="3"myview:text_color="@color/white" >javaautoScrollTextView.setText(rolltxt);autoScrollTextView.init(getWindowManager());http://blog.sina.com.cn/s/blog_821e2bb10100uoao.html自定义控件，一开始不显示，速度可调，能停止滚动
自定义控件
http://blog.csdn.net/allen315410/article/details/39343401
base64解码
obj = new JSONObject(info.result);System.out.println(info.result.toString());String data = obj.getString("data");byte[] bys = Base64.decode(data, Base64.DEFAULT);System.out.println(data.toString());String iv = obj.getString("iv");System.out.println(iv.toString());byte[] result = AppUtils.decode(Constants.des_key,bys, iv);String resultStr = new String(result);
版本更新，要考虑到用户更新后的缓存问题，不能只想着新用户
微信支付，支付宝支付
微信支付
1.发起网络请求，请求获取支付信息
requeseData(pay_way, good_id, address, user_id, number, iccid,
mobile);
2.把支付信息发送给微信
private void sendToWeChat(String m_id, String p_id, String nonce_str) {
if (AppUtils.checkAPP(Fenxiao2WebActivity.this,
HttpClient.WEIXIN_PACKAGE_NAME)) {
genPayReq(m_id, p_id, nonce_str);
msgApi.registerApp(Common.APP_ID);
msgApi.sendReq(req);
} else {
Toast.makeText(Fenxiao2WebActivity.this, "未安装微信", 2000).show();
}
}
3.
@SuppressLint("NewApi")
private void genPayReq(String mch_id, String prepay_id, String nonce_str) {
req.appId = Common.APP_ID;
req.partnerId = mch_id;
req.prepayId = prepay_id;
req.packageValue = "Sign=WXPay";
req.nonceStr = nonce_str.isEmpty() ? genNonceStr() : nonce_str;
req.timeStamp = String.valueOf(genTimeStamp());
List signParams = new LinkedList();
signParams.add(new BasicNameValuePair("appid", req.appId));
signParams.add(new BasicNameValuePair("noncestr", req.nonceStr));
signParams.add(new BasicNameValuePair("package", req.packageValue));
signParams.add(new BasicNameValuePair("partnerid", req.partnerId));
signParams.add(new BasicNameValuePair("prepayid", req.prepayId));
signParams.add(new BasicNameValuePair("timestamp", req.timeStamp));
req.sign = genAppSign(signParams);
}
4.
private String genAppSign(List params) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < params.size(); i++) {
sb.append(params.get(i).getName());
sb.append('=');
sb.append(params.get(i).getValue());
sb.append('&');
}
sb.append("key=");
sb.append(Common.API_KEY);
Log.e("test", sb.toString());
String appSign = MD5.getMessageDigest(sb.toString().getBytes())
.toUpperCase();
Log.e("test", appSign);
return appSign;
}
private String genNonceStr() {
Random random = new Random();
return MD5.getMessageDigest(String.valueOf(random.nextInt(10000))
.getBytes());
}
private long genTimeStamp() {
return System.currentTimeMillis() / 1000;
}
5.配置信息，配置wxapi包的两个activity
缓存问题
弹出虚拟键盘的时候出现黑底和影响布局
在配置文件里添加 android:windowSoftInputMode="stateHidden|adjustPan"
获取android手机mac地址
https://www.jianshu.com/p/92acd8d028aa
除去ScrollVIew拉到尽头时再拉的阴影效果
一、删除android ScrollView边界阴影方法方法
1） 在xml中添加：android:fadingEdge=”none”
2） 代码中添加：ScrollView.setHorizontalFadingEdgeEnabled(false);
二、删除ScrollView拉到尽头（顶部、底部），然后继续拉出现的阴影效果
适用于2.3及以上的 否则不用设置
android:overScrollMode="never"
获取蓝牙mac地址
http://blog.csdn.net/zgcqflqinhao/article/details/52527860
Android Dialog 点击对话框外部区域不关闭的设置
http://blog.sina.com.cn/s/blog_8f1c79dd0101a63u.html
不要过多地创建对象，可以考虑判断已经实例化的对象就不要重复实例化，直接使用，过过new对象可能会对内存有影响，可能会造成内存溢出
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