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#趣米杯#快速开发之xUtils(一)简介以及使用方法
#趣米杯#快速开发之xUtils(二)ViewUtils介绍
#趣米杯#快速开发之xUtils(三)DbUtils介绍
增加：
1、
for (int i = 0; i <5; i++) {
User user=new User(); user.setUserName("liyuhao"+i); user.setPassword("123456"+i); try { db.save(user); } catch (DbException e) { e.printStackTrace(); } }2、
List<User> users=new ArrayList<User>();
for (int i = 0; i <5; i++) { User user=new User(); user.setUserName("liyuhao"+i); user.setPassword("123456"+i); users.add(user); } try { db.saveAll(users); } catch (DbException e) { e.printStackTrace(); }3、
for (int i = 0; i <5; i++) {
try { db.getDatabase().execSQL("insert into user(username,password) values(?,?)", new String[]{"liyuhao"+i,"123456"+i}); } catch (Exception e) { e.printStackTrace(); } }删除：
1、db.getDatabase().execSQL("delete from user where userName=? and password=?", bindArgs);
2、db.delete(User.class, WhereBuilder.b("userName", "=", "liyuhao1").and("password", "=", "1234561"));
3、db.deleteAll(User.class);//相当于delete from user;
修改：
1、db.getDatabase().execSQL("update user set userName=? where password=?", new String[]{"liyuhaoX","1234560"});
2、修改所有的密码为123
List<User> list = db.findAll(User.class);
for (User user : list) { user.setPassword("123"); } db.updateAll(list, "password");3、User user=new User();
user.setId(1); user.setUserName("liyuhao1"); db.update(User.class, WhereBuilder.b("password", "=", "123456"), "password");查询：
public List<Map<String,Object>> get()
{
List<Map<String,Object>> result=new arrayList<Map<String,Object>>();
Cuseror cursor=db.rawQuery(String sql);
while(cursor.moveToNext())
{
Map<String,Objcet> map=new HashMap<String,Objcet>();
map.put("username",cursor.getString(0));
result.add(map);
}
#趣米杯#快速开发之xUtils(四)HttpUtils介绍
HttpUtils http = new HttpUtils();
RequestParams params = new RequestParams(); params.addBodyParameter("username", username); params.addBodyParameter("password", password); http.send(HttpMethod.POST, Constent.LOGIN_URL, params, new RequestCallBack<String>() { @Override public void onStart() { pd.show(); }@Override
public void onLoading(long total, long current, boolean isUploading) { LogUtils.d("total=" + total + ",current=" + current + ",isUploading=" + isUploading); }@Override
public void onSuccess(ResponseInfo<String> responseInfo) { Gson gson = new Gson(); MessageInfo mi = gson.fromJson(responseInfo.result, MessageInfo.class);ArrayList<GongGao> gongGaos = gson.fromJson(responseInfo.result, new TypeToken<ArrayList<GongGao>>() {
}.getType());}
@Override
public void onFailure(HttpException error, String msg) { pd.dismiss(); Toast.makeText(LoginActivity.this, "联网失败。", Toast.LENGTH_SHORT).show(); LogUtils.d("msg=" + msg); }其中 onSuccess(),onFailure()是抽象方法，必须实现。
InputStream is = getResources().openRawResource(R.raw.a);
try { String str = StreamTool.inputStream2String(is); String[] split = str.split("\\|"); if(Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){ File sdcardDir = Environment.getExternalStorageDirectory(); String path=sdcardDir.getPath()+"/carImages"; final File path1 = new File(path); if (!path1.exists()) { //若不存在，创建目录，可以在应用启动的时候创建 path1.mkdirs(); } } httpUtils = new HttpUtils(5 * 1000); for (int i = 0; i < split.length; i++) { System.out.println("what:"+split[i]); //下载图片到指定的文件夹中 httpUtils.send(HttpMethod.GET, split[i], new RequestCallBack<Bitmap>() {@Override
public void onFailure(HttpException arg0, String arg1) { }@Override
public void onSuccess(ResponseInfo<Bitmap> arg0) { FileOutputStream out; try { out = new FileOutputStream(Environment.getExternalStorageDirectory().getPath()+"/carImages"); arg0.result.compress(Bitmap.CompressFormat.PNG, 90, out); out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } } }); } } catch (IOException e1) { e1.printStackTrace(); }