9.18工作日誌,系統定位，自定義viewgroup，放射獲取注入的類

自寫工具類，更新activeandroid框架的數據庫

@Table(name = "CategoryData",id = "id")
public class CategoryData extends Model implements Serializable {
    @Column(name = "cid",index = true)
    public int cid;

    @Column(name = "namebn",index = true)
    public String namebn;

    @Column(name = "nameen",index = true)
    public String nameen;

    @Column(name = "namegn",index = true)
    public String namegn;

    public CategoryData()
    {
        super();
    }
}

使用到放射判斷這個類是不是使用了Table注入

 Annotation[] annotations = cls.getDeclaredAnnotations();
            if (annotations != null) {
                for (Annotation annotation : annotations) {
                    String annName = annotation.toString();
                    if (annName.indexOf("com.activeandroid.annotation.Table") != 0) {
                        isActivDB = true;
                        break;
                    }
                }
            }

1.為什麼要用:annotation.toString();
因為如果使用annotation.getClass().getName()，getCanonicalName都是返回@XX(一個無效的名字)，所以使用toString

參考
http://www.java2s.com/Tutorials/Java/java.lang.reflect/Field/0160__Field.getDeclaredAnnotations_.htm

Annotation[] annotations = field.getDeclaredAnnotations();
annotations.toString()
得到這樣的結果
@com.activeandroid.annotation.Column(index=false, indexGroups=[], length=-1, name=orderbn, notNull=false, onDelete=NO_ACTION, onNullConflict=FAIL, onUniqueConflict=FAIL, onUniqueConflicts=[], onUpdate=NO_ACTION, unique=false, uniqueGroups=[])

對此寫了個有趣的正則取值代碼:

/** * 获取放射的属性的值 * @param annotation * @param annName * @return */
    private String getVlaueByColumnAnnotation(Annotation annotation,String annName) {
        String ret = "";
        String pattern = annName + "=(.*?),";
        Pattern r = Pattern.compile(pattern);
        Matcher m = r.matcher(annotation.toString());
        if (m.find()){
            ret = m.group();
            ret = ret.substring(annName.length()+1, ret.length()-1);
        }
        return ret;
    }

Log.d(TAG,getVlaueByColumnAnnotation(annotation,”name”));
name>>>cid

將代碼放上jcenter:
http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0623/3097.html

寫了一個ViewGroup控件:

/** * 自動平鋪沒邊界viewgroup * Created by george.yang on 2015/9/15. */
public class NoScllViewGroup extends ViewGroup {
    private static final int PADDING_HOR = 10;//水平方向padding
    private static final int PADDING_VERTICAL = 5;//垂直方向padding
    private static final int SIDE_MARGIN = 5;//左右间距
    private static final int TEXT_MARGIN = 5;//??

    public NoScllViewGroup(Context context) {
        super(context);

    }

    public NoScllViewGroup(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public NoScllViewGroup(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    private void init (Context context) {

    }

    public void setTexts (List<String> strings) {
        this.removeAllViews();
        for (String str:strings) {
            TextView tv  = new TextView(getContext());
            tv.setText(str);
            this.addView(tv);
        }
        this.requestLayout();
    }

    public void setImages (Activity activity,List<String> urls) {
        this.removeAllViews();
        LayoutInflater mlayoutInflater = (LayoutInflater) getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        for (int i=0;i<urls.size();i++) {
            final  int index = i;
            View view  = mlayoutInflater.inflate(R.layout.thumbitems,null);
            SimpleDraweeView simpleDraweeView = (SimpleDraweeView) view.findViewById(R.id.thumbimage);
            simpleDraweeView.setImageURI(Uri.parse(urls.get(i)));
            LayoutParams lp = simpleDraweeView.getLayoutParams();
            int width = DensityUtil.getWidthWithScreenByPersent(activity,1f/4) - 5 * PADDING_HOR;
            lp.width = width;
            lp.height = width;

            simpleDraweeView.setLayoutParams(lp);
            this.addView(view);

            view.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (listener!=null) {
                        listener.onItemClick(null,v,index,0);
                    }
                }
            });
        }
        this.requestLayout();
    }

    private AdapterView.OnItemClickListener listener;
    public void setOnItemClickListener (AdapterView.OnItemClickListener listener) {
        this.listener = listener;
    }

    public void setAdapter (Adapter adapter) {
        this.removeAllViews();
        int count = adapter.getCount();
        for (int i=0;i<count;i++) {
            final  int index = i;
            View view = adapter.getView(i, null, null);
            this.addView(view);

            view.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (listener != null) {
                        listener.onItemClick(null, v, index, 0);
                    }
                }
            });
        }
        this.requestLayout();
    }

// @Override
// protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// measureChildren(widthMeasureSpec, heightMeasureSpec);
// super.onMeasure(widthMeasureSpec, heightMeasureSpec);
// }
//
// protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
// int mViewGroupWidth = getMeasuredWidth(); //当前ViewGroup的总宽度
// int mPainterPosX = left; //当前绘图光标横坐标位置
// int mPainterPosY = top; //当前绘图光标纵坐标位置
//
// int childCount = getChildCount();
// for ( int i = 0; i < childCount; i++ ) {
//
// View childView = getChildAt(i);
//
// int width = childView.getMeasuredWidth();
// int height = childView.getMeasuredHeight();
//
// //如果剩余的空间不够，则移到下一行开始位置
// if( mPainterPosX + width > mViewGroupWidth ) {
// mPainterPosX = left;
// mPainterPosY += height;
// }
//
// //执行ChildView的绘制
// childView.layout(mPainterPosX,mPainterPosY,mPainterPosX+width, mPainterPosY+height);
//
// //记录当前已经绘制到的横坐标位置
// mPainterPosX += width;
// }
// }


    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        int childCount = getChildCount();
        int autualWidth = r - l;
        int x = 0;// 横坐标开始
        int y = 0;//纵坐标开始
        int rows = 1;
        for(int i=0;i<childCount;i++){
            View view = getChildAt(i);
            int width = view.getMeasuredWidth();
            int height = view.getMeasuredHeight();
            x += width+TEXT_MARGIN;
            if(x>autualWidth){
                x = width;
                rows++;
            }
            y = rows*(height+TEXT_MARGIN);
            if(i==0){
                view.layout(x-width-TEXT_MARGIN, y-height, x-TEXT_MARGIN, y);
            }else{
                view.layout(x-width, y-height, x, y);
            }
        }
    };

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int x = 0;//横坐标
        int y = 0;//纵坐标
        int rows = 1;//总行数
        int specWidth = MeasureSpec.getSize(widthMeasureSpec);
        int actualWidth = specWidth - SIDE_MARGIN * 2;//实际宽度
        int childCount = getChildCount();
        for(int index = 0;index<childCount;index++){
            View child = getChildAt(index);
            child.setPadding(PADDING_HOR, PADDING_VERTICAL, PADDING_HOR, PADDING_VERTICAL);
            child.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
            int width = child.getMeasuredWidth();
            int height = child.getMeasuredHeight();
            x += width+TEXT_MARGIN;
            if (x > actualWidth){//换行
                x = width;
                rows++;
            }
            y = rows*(height+TEXT_MARGIN);
        }
        setMeasuredDimension(actualWidth, y);
    }
}

參考：
http://www.tuicool.com/articles/u2eEbe
http://ticktick.blog.51cto.com/823160/1542200/

Retrofit 2.0：有史以来最大的改进
http://www.tuicool.com/articles/BJjYFzv

android系統定位:

// mLocationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
// //篩選最後的定位方式
// Criteria c = new Criteria();
// c.setAccuracy(Criteria.ACCURACY_FINE); //精度高
// c.setPowerRequirement(Criteria.POWER_LOW); //电量消耗低
// c.setAltitudeRequired(false); //不需要海拔
// c.setSpeedRequired(false); //不需要速度
// c.setCostAllowed(false); //不需要费用
// String provider = mLocationManager.getBestProvider(c, false); //false是指不管当前适配器是否可用
// //1分鐘、距離大於200米獲取一次
// mLocationManager.requestLocationUpdates(provider,60000, 200,mLocationListener);
// Location location = mLocationManager.getLastKnownLocation(provider);
// if (location!=null) {
// lat = location.getLatitude();
// lng = location.getLongitude();

強烈不建議使用，很多機型獲取失敗！
參考：
http://blog.csdn.net/dier4836/article/details/7351116