在Android中将Float转换为String

Question

i am trying simple calculation of float value but the output are not proper

Log.i("100/50", Float.toString(100/50));
Log.i("100/100", Float.toString(100/100));
Log.i("100/250", Float.toString(100/250));
Log.i("1/5", Float.toString(1/5));

logcat output

11-10 23:36:23.677: I/100/50(28562): 2.0
11-10 23:36:23.677: I/100/100(28562): 1.0
11-10 23:36:23.685: I/100/250(28562): 0.0
11-10 23:38:23.685: I/1/5(28562): 0.0

its a simple calculation of float, why its displaying such answer

Answer 1

You need to use floats instead of ints, try Log.i("100/50", Float.toString(100f/50)); this makes Java to use float arithmetic, otherwise it does int division then converts the result to float

Answer 2

Do like this

Log.i("100/250", Float.toString(100f/250f));
Log.i("1/5", Float.toString(1f/5f));

output is

11-11 12:25:32.198: I/100/250(351): 0.4
11-11 12:25:32.208: I/1/5(351): 0.2

Float.toString takes an input floating point

public static String toString (float f)

where f is the float to convert to a string.

More information is available on Developers Website .

Answer 3

Use this code.

Log.i("100/50", Float.toString(100/50f)); Log.i("100/100", Float.toString(100/100f)); Log.i("100/250", Float.toString(100/250f)); Log.i("1/5", Float.toString(1/5f));

Hope it will work for you.

Answer 4

you are performing division of two integers. so by default output will be in integer. Instead of that try to type case the dividend into float eg (float)100/250 so the out put will be in float and you will get proper result

eg instead of 100/250 try (float)100/250 or 100f/250