Java 如何得到一个整数作为结果
我已经为android创建了一个应用程序,它接受三个输入并进行计算Java 如何得到一个整数作为结果,java,android,Java,Android,我已经为android创建了一个应用程序,它接受三个输入并进行计算 else { float result1 = (((new Float(input11.getText().toString()) + new Float(input21.getText().toString()))/2)); float result2 = (new Float(input31.getText().toString()); if(result
else {
float result1 = (((new Float(input11.getText().toString())
+ new Float(input21.getText().toString()))/2));
float result2 = (new Float(input31.getText().toString());
if(result1<(result2 - 2)) {
result1 = result2-2;
float result=(float) ( (new Float(result1)*0.3)+(new Float(result2)*0.7));
vprosvasis.setText(Float.toString(result));
}
else if(result1>(result2 + 2)) {
result1=result2+2;
float result=(float) ( (new Float(result1)*0.3)+(new Float(result2)*0.7));
vprosvasis.setText(Float.toString(result));
}
else {
float result = (float) ((((new Float(input11.getText().toString())
+ new Float(input21.getText().toString()))/2)*0.3)
+ (new Float(input31.getText().toString())*0.7));
vprosvasis.setText(Float.toString(result));
}
}
您可以看看java.text.NumberFormat。它将为您提供以用户友好的方式格式化结果的方法,并帮助您根据用户的区域设置进行解析。如果我正确理解了问题,您应该研究Java的
数学类。是开发者文档
当涉及到浮点或双精度运算时,数学课几乎可以做任何事情
您可能要查看的另一个类是DecimalFormat
,它可以精确地执行所说的操作,即格式化小数。:)这是可用的
float vprosvasisFloat = Float.parseFloat(vprosvasis.getText().toString());
float vprosvasisFloat2 = Float.parseFloat(vprosvasis2.getText().toString());
float vprosvasisFloat7 = Float.parseFloat(vprosvasis7.getText().toString());
float vprosvasisFloat5 = Float.parseFloat(vprosvasis6.getText().toString());
float vprosvasisFloat4 = Float.parseFloat(vprosvasis7.getText().toString());
float vprosvasisFloat3 = Float.parseFloat(vprosvasis6.getText().toString());
float vprosvasisFloat6 = Float.parseFloat(vprosvasis5.getText().toString());
float genikosvathmosoik = (( new Float(vprosvasis.getText().toString())
+ new Float(vprosvasis2.getText().toString())
+ new Float(vprosvasis3.getText().toString())
+ new Float(vprosvasis4.getText().toString())
+ new Float(vprosvasis5.getText().toString())
+ new Float(vprosvasis6.getText().toString())
+ new Float(vprosvasis7.getText().toString())) / 7);
moria2oik = (((new Float ((genikosvathmosoik*8)+(vprosvasisFloat * 1.3)+(vprosvasisFloat2 * 0.7))*100)));
moria3oik=(((new Float ((genikosvathmosoik*8)+(vprosvasisFloat4 * 1.3)+(vprosvasisFloat3 * 0.7))*100)));
moria5oik=(((new Float ((genikosvathmosoik*8)+(vprosvasisFloat7 *1.3)+(vprosvasisFloat6 * 0.7))*100)));
switch(spinner.getSelectedItemPosition()){
case 0:
show = new AlertDialog.Builder(mContext).setTitle(R.string.app_name)
.setMessage("1o : -\n2o : "
+ moria2oik + "\n3o : "
+ moria3oik + "\n4o : "
+ moria2oik + "\n5o : "
+ moria5oik)
.setPositiveButton("OK", null).show();
break;