jp1017

/**
 * Camera与Matrix的比较：
 * Camera的rotate()相关方法是指定某一维度上旋转指定的角度。
 * Matrix的rotate()相关方法实现的效果是顺时针旋转指定的角度；与Camera指定Z轴旋转效果相同，但方向相反。
 * 
 * Camera的translate()方法根据某一维度上视点的位移实现图像的缩放，与Matrix的scale()相关方法作用效果相似，
 * 只是Matrix的scale()相关方法是直接指定缩放比例。
 * 
 * Camera不支持倾斜操作，Matrix可以直接实现倾斜操作。
 */

jp1017

public static int calculateInSampleSize(
            BitmapFactory.Options options, int reqWidth, int reqHeight) {
    // Raw height and width of image
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

        final int halfHeight = height / 2;

jp1017

#!/bin/bash

# 来源：
#1. https://stackoverflow.com/questions/2789462/find-package-name-for-android-apps-to-use-intent-to-launch-market-app-from-web/7502519#7502519
#2. http://jp1017.github.io/2016/01/29/获取安卓应用的包名和入口-Activity/
# how to use: ./getLauncherActivity.sh **.apk

#package_name=$1
#launch app by package name
#adb shell monkey -p ${package_name} -c android.intent.category.LAUNCHER 1;

jp1017

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="#ffffff"
              android:orientation="vertical" >
    <FrameLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        >

jp1017

/**
 * Created by Tiou on 2014/7/15.
 * 一个实现 Recycle 机制的对象
 */
public class Data {
    /**
     * 对象池，就是上文所提到的对象仓库，用于暂时存放不用的对象。
     * 用链表来实现对象池结构，直观，高效，易用。
     * sPool 便是指向链表头部的引用
     */

jp1017

public class DBHelper
{
    private static Context mContext;
    private static DBHelper instance;
                                                                                                                                                                                                                                                                                                                                   
    private CityInfoDBDao cityInfoDao;
                                                                                                                                                                                                                                                                                                                                   
    private DBHelper()
    {
    }

jp1017

package cc.aa;
 
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
 
public class UnderstandDispatchTouchEvent {
    /**
     * dispatchTouchEvent()源码学习及其注释
     * 常说事件传递中的流程是:dispatchTouchEvent->onInterceptTouchEvent->onTouchEvent

jp1017

/**
	 * 冒泡排序
	 * 
	 * @param a
	 */
	public static void bubbleSort(int[] a) {
		int temp;
		for (int i = 0; i < a.length; i++)
			for (int j = 0; j < a.length - i - 1; j++) {

jp1017

#!/bin/bash
# Script adb+
# Run any command adb provides on all your currently connected devices,
# Or prompt to select one device

showHelp() {
	echo "Usage: adb+ [-a] <command>"
	echo "       -h: show help"
	echo "       -a: run command on all device"
	echo "  command: normal adb commands"

jp1017

package com.inst.navigation.utils;

import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;

/* The calls to {@link #onTick(long)} are synchronized to this object so that
        * one call to {@link #onTick(long)} won't ever occur before the previous
        * callback is complete.  This is only relevant when the implementation of
        * {@link #onTick(long)} takes an amount of time to execute that is significant