jimbray

/**
 * Created by jimbray on 2018/11/18.
 * Email: jimbray16@gmail.com
 */

public class RosBridgeClientManager {

    private static final String TAG = RosBridgeClientManager.class.getSimpleName();

    private static RosBridgeClientManager instance;

jimbray

android {}外 定义 获取时间的函数

    def release_time() {
        return new Date().format("yyyy-MM-dd_HH-mm-ss")
    }

更改apk 名称

        //修改release apk名称
        android.applicationVariants.all {

jimbray

package com.zrd.waukeen.common;

import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class CommonViewHolder {
	

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public <T extends View> T $(int id) {
    return (T) super.findViewById(id);
}

public <T extends View> T $(View view, int id) {
    return (T) view.findViewById(id);
}

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/**
 * 判断是否是 Tablet
 *
 * @param activity Activity
 * @return true, if is tablet device
 */
public static boolean isTablet(Activity activity) {
    DisplayMetrics dm = new DisplayMetrics();
    activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
    double diagonalPixels = Math.sqrt(Math.pow(dm.widthPixels, 2) + Math.pow(dm.heightPixels, 2));

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mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer);
drawerToggle = setupDrawerToggle();
mDrawerLayout.setDrawerListener(drawerToggle);

private ActionBarDrawerToggle setupDrawerToggle() {
	return new ActionBarDrawerToggle(this, mDrawerLayout, mToolbar,
			R.string.app_name, R.string.app_name);
}

@Override

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//质量压缩
private Bitmap compressImage(Bitmap image) {

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		image.compress(Bitmap.CompressFormat.JPEG, 100, baos);//质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中
		int options = 100;
		while ( baos.toByteArray().length / 1024>100) {	//循环判断如果压缩后图片是否大于100kb,大于继续压缩		
			baos.reset();//重置baos即清空baos
			image.compress(Bitmap.CompressFormat.JPEG, options, baos);//这里压缩options%，把压缩后的数据存放到baos中
			options -= 10;//每次都减少10

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	public static Object reflect2(Object obj) {
		if (obj == null) 
			return null;  
        Field[] fields = obj.getClass().getDeclaredFields();  
        for (int j = 0; j < fields.length; j++) {  
            fields[j].setAccessible(true);  
            // 字段名  
            System.out.print(fields[j].getName() + ",");  
            // 字段值  
            if (fields[j].getType().getName().equals(  

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	public static String getCurVersionName(Context context) {
		String versionName = null;
		
		try {
			PackageInfo pInfo = context.getPackageManager().getPackageInfo(
					context.getPackageName(), 0);
			versionName = pInfo.versionName;
		} catch (NameNotFoundException e) {
			versionName = "没有版本号";
		}

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	/**
	 * 根据value寻找key
	 * @param map
	 * @param value
	 * @return
	 */
	public static String getMapKeyByValue(HashMap<String, String> map, Object value) {
		Set<String> kset = map.keySet();
		for(String ks : kset){
			if(value.equals(map.get(ks))) {