写了一个关于利率贷款的界面和其他的算法，算法抄的别人的。
界面dialog 和pop两种显示方式。
demo目前没有上传。
算法 可以使用一下
/**
* 商业和公积金贷款
* @param ze 贷款总额
* @param nx 年限
* @param rate 利率
*/
public void cal(double ze, double nx, double rate) {
double zem = (ze * rate / 12 * Math.pow((1 + rate / 12), nx))
/ (Math.pow((1 + rate / 12), nx) - 1);
double amount = zem * nx;
double rateAmount = amount - ze;
BigDecimal zemvalue = new BigDecimal(zem);
double zemval = zemvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal amountvalue = new BigDecimal(amount);
double amountval = amountvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal rateAmountvalue = new BigDecimal(rateAmount);
double rateAmountval = rateAmountvalue.setScale(2,
BigDecimal.ROUND_HALF_UP).doubleValue();
double benjinm = ze / nx;
double lixim = ze * (rate / 12);
double diff = benjinm * (rate / 12);
double huankuanm = benjinm + lixim;
double zuihoukuan = diff + benjinm;
double av = (huankuanm + zuihoukuan) / 2;
double zong = av * nx;
double zongli = zong - ze;
BigDecimal huankuanmvalue = new BigDecimal(huankuanm);
double huankuanmval = huankuanmvalue.setScale(2,
BigDecimal.ROUND_HALF_UP).doubleValue();
BigDecimal diffvalue = new BigDecimal(diff);
double diffmval = diffvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal zongvalue = new BigDecimal(zong);
double zongval = zongvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal zonglivalue = new BigDecimal(zongli);
double zonglival = zonglivalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
/*等额本息*/
// am10.setText(ze + "元"); 总额
// am11.setText(nx + "月"); 月份
// am12.setText(zemval + "元"); 月供
// am13.setText(rateAmountval + "元"); 合计利息
// am14.setText(amountval + "元"); 本息合计
Logger.d("等额本息" + ze + "年限" + (int) (nx / 12) + "dd" + zemval + "合计利息" + rateAmountval + "dd" + amountval);
/*等额本金*/
// am20.setText(ze + "元");
// am21.setText(nx + "月");
// am22.setText("首月" + huankuanmval + ",月减" + diffmval);
// am23.setText(zonglival + "元");合计利息
// am24.setText(zongval + "元"); 本息合计
Logger.d("等额本金" + ze + "nx" + nx / 12 + "zongli" + zonglival + "zongval" + zongval + "首月" + huankuanmval + ",月减" + diffmval);
String title = "等额本息还款";
String nina = removeDian(daiqixian);
String zed = getDecimalFormat(ze);
String amountvald = getDecimalFormat(amountval);
String zongvald = getDecimalFormat(zongval);
String rateAmountvald = getDecimalFormat(rateAmountval);
String zonglivald = getDecimalFormat(zonglival);
if (delxoj == 1) {
title = "等额本息还款";
bottomDialog.title(title).hideCancel().addResult(delxoj, zed, nina + "年", amountvald, zemval, zemval, rateAmountvald).show();
} else {
title = "等额本金还款";
bottomDialog.title(title).hideCancel().addResult(delxoj, zed, nina + "年", zongvald, huankuanmval, diffmval, zonglivald).show();
}
}
/**
* 混合 贷款
*
* @param ze 公积金总额
* @param nx 年限
* @param rate 公积金利率
* @param ze1 商业总额
* @param rate1 商业利率
*/
public void cal(double ze, double nx, double rate, double ze1, double rate1) {
double zem = (ze * rate / 12 * Math.pow((1 + rate / 12), nx))
/ (Math.pow((1 + rate / 12), nx) - 1);
double amount = zem * nx;
double rateAmount = amount - ze;
double zem1 = (ze1 * rate1 / 12 * Math.pow((1 + rate1 / 12), nx))
/ (Math.pow((1 + rate1 / 12), nx) - 1);
double amount1 = zem1 * nx;
double rateAmount1 = amount1 - ze1;
BigDecimal zemvalue = new BigDecimal(zem + zem1);
double zemval = zemvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal amountvalue = new BigDecimal(amount + amount1);
double amountval = amountvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal rateAmountvalue = new BigDecimal(rateAmount + rateAmount1);
double rateAmountval = rateAmountvalue.setScale(2,
BigDecimal.ROUND_HALF_UP).doubleValue();
double benjinm = ze / nx;
double lixim = ze * (rate / 12);
double diff = benjinm * (rate / 12);
double huankuanm = benjinm + lixim;
double zuihoukuan = diff + benjinm;
double av = (huankuanm + zuihoukuan) / 2;
double zong = av * nx;
double zongli = zong - ze;
double benjinm1 = ze1 / nx;
double lixim1 = ze1 * (rate1 / 12);
double diff1 = benjinm1 * (rate1 / 12);
double huankuanm1 = benjinm1 + lixim1;
double zuihoukuan1 = diff1 + benjinm1;
double av1 = (huankuanm1 + zuihoukuan1) / 2;
double zong1 = av1 * nx;
double zongli1 = zong1 - ze1;
BigDecimal huankuanmvalue = new BigDecimal(huankuanm + huankuanm1);
double huankuanmval = huankuanmvalue.setScale(2,
BigDecimal.ROUND_HALF_UP).doubleValue();
BigDecimal diffvalue = new BigDecimal(diff + diff1);
double diffmval = diffvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal zongvalue = new BigDecimal(zong + zong1);
double zongval = zongvalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
BigDecimal zonglivalue = new BigDecimal(zongli + zongli1);
double zonglival = zonglivalue.setScale(2, BigDecimal.ROUND_HALF_UP)
.doubleValue();
/*等额本息*/
// am10.setText((ze + ze1) + "元");
// am11.setText(nx + "月");
// am12.setText(zemval + "元");
// am13.setText(rateAmountval + "元");
// am14.setText(amountval + "元");
/*等额本金*/
// am20.setText((ze + ze1) + "元");
// am21.setText(nx + "月");
// am22.setText("首月" + huankuanmval + ",月减" + diffmval);
// am23.setText(zonglival + "元");
// am24.setText(zongval + "元");
Logger.d((ze + ze1) + "每月" + nx + zemval + "元" + rateAmountval + "元" + amountval + "元");
Logger.d((ze + ze1) + "每月" + nx + "首月" + huankuanmval + ",月减" + diffmval + "元" + zonglival + "元" + zongval + "元");
String title = "等额本息还款";
String nina = removeDian(daiqixian);
String zed = getDecimalFormat(ze + ze1);
String amountvald = getDecimalFormat(amountval);
String zongvald = getDecimalFormat(zongval);
String rateAmountvald = getDecimalFormat(rateAmountval);
String zonglivald = getDecimalFormat(zonglival);
if (delxoj == 1) {
title = "等额本息还款";
bottomDialog.title(title).hideCancel().addResult(delxoj, zed, nina + "年", amountvald, zemval, zemval, rateAmountvald).show();
} else {
title = "等额本金还款";
bottomDialog.title(title).hideCancel().addResult(delxoj, zed, nina + "年", zongvald, huankuanmval, diffmval, zonglivald).show();
}
}
目前还不会排版，还是小学生，希望可以帮你。
