преобразователь с 2 блесны

Question

мне нужна ваша помощь, это действительно сводит меня с ума, и я действительно не могу найти решение для этого, так что я хочу, чтобы создать это конвертер приложение для андроид здесь мои коды

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:orientation="vertical" > 

<EditText 
    android:id="@+id/input" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:ems="10" 
    android:hint="Input Number Here" 
    android:inputType="number" /> 

<Spinner 
    android:id="@+id/spinner1" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" /> 

<TextView 
    android:id="@+id/textView1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Converts to:" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<Spinner 
    android:id="@+id/spinner2" 
    android:layout_width="103dp" 
    android:layout_height="wrap_content" /> 

<Button 
    android:id="@+id/btnSubmit" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="Convert" /> 

<EditText 
    android:id="@+id/output" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:ems="10" 
    android:inputType="number" > 

    <requestFocus /> 
</EditText> 

MainActivity.java

package com.example.test; 

import java.util.ArrayList; 
import java.util.List; 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.Spinner; 
import android.widget.Toast; 

public class MainActivity extends Activity { 

private Spinner spinner1, spinner2; 
private Button btnSubmit; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 

addItemsOnSpinner2(); 
addListenerOnButton(); 
addListenerOnSpinnerItemSelection(); 
} 

// add items into spinner dynamically 
public void addItemsOnSpinner2() { 

spinner1 = (Spinner) findViewById(R.id.spinner1); 
List<String> list1 = new ArrayList<String>(); 
list1.add("Inches"); 
list1.add("Feet"); 
list1.add("Yard"); 
list1.add("Miles"); 
list1.add("Milimeter"); 
list1.add("Centimeter"); 
list1.add("Meter"); 
list1.add("Kilometer"); 
ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(this, 
android.R.layout.simple_spinner_item, list1); 
dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
spinner1.setAdapter(dataAdapter1); 


spinner2 = (Spinner) findViewById(R.id.spinner2); 
List<String> list2 = new ArrayList<String>(); 
list2.add("Inches"); 
list2.add("Feet"); 
list2.add("Yard"); 
list2.add("Miles"); 
list2.add("Milimeter"); 
list2.add("Centimeter"); 
list2.add("Meter"); 
list2.add("Kilometer"); 
ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(this, 
android.R.layout.simple_spinner_item, list2); 
dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
spinner2.setAdapter(dataAdapter2); 
} 

public void addListenerOnSpinnerItemSelection() { 
spinner1 = (Spinner) findViewById(R.id.spinner1); 
spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener()); 
} 

// get the selected dropdown list value 
public void addListenerOnButton() { 

spinner1 = (Spinner) findViewById(R.id.spinner1); 
spinner2 = (Spinner) findViewById(R.id.spinner2); 
btnSubmit = (Button) findViewById(R.id.btnSubmit); 

btnSubmit.setOnClickListener(new OnClickListener() { 


if(selected1.equals("Inches")) 
{ 
if (selected2.equals("Feet")) 
{ 
//do calculation 
} 
else if (selected2.equals("unit")) 
{ 
//do calculation 
} 
else if (selected2.equals("otherunit")) 
{ 
//do calculation 
} 
else 
{ 
//ERROR 
} 
} 

if (selected1.equals("m")) 
{ 
if (selected2.equals("Yard")) 
{ 
//do calculation 
} 
else if (selected2.equals("unit")) 
{ 
//do calculation 
} 
else if (selected2.equals("otherunit²")) 
{ 
//do calculation 
} 
else 
{ 
//ERROR 
} 
} 
//repeat for all the possible units 

} 

public void onClick(View v) { 

Toast.makeText(MainActivity.this, 
"OnClickListener : " + 
"\nSpinner 1 : "+ String.valueOf(spinner1.getSelectedItem()) + 
"\nSpinner 2 : "+ String.valueOf(spinner2.getSelectedItem()), 
Toast.LENGTH_SHORT).show(); 
} 


} 

Answer 1

Основная деятельность:

public class MainActivity extends Activity { 

private Spinner spinner1, spinner2; 
private Button btnSubmit; 
private EditText from; 
private TextView to; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    btnSubmit = (Button) findViewById(R.id.btnSubmit); 
    from = (EditText) findViewById(R.id.InputEditText); 
    to = (TextView) findViewById(R.id.OutputTextView); 

    spinner1 = (Spinner) findViewById(R.id.spinner1); 
    List<String> list1 = new ArrayList<String>(); 
    list1.add("Inches"); 
    list1.add("Feet"); 
    list1.add("Yard"); 
    list1.add("Miles"); 
    list1.add("Milimeter"); 
    list1.add("Centimeter"); 
    list1.add("Meter"); 
    list1.add("Kilometer"); 
    ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(this, 
    android.R.layout.simple_spinner_item, list1); 
    dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinner1.setAdapter(dataAdapter1); 


    spinner2 = (Spinner) findViewById(R.id.spinner2); 
    List<String> list2 = new ArrayList<String>(); 
    list2.add("Inches"); 
    list2.add("Feet"); 
    list2.add("Yard"); 
    list2.add("Miles"); 
    list2.add("Milimeter"); 
    list2.add("Centimeter"); 
    list2.add("Meter"); 
    list2.add("Kilometer"); 
    ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(this, 
    android.R.layout.simple_spinner_item, list2); 
    dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinner2.setAdapter(dataAdapter2); 
} 

public void onClick(View v) { 

    int index1 = spinner1.getSelectedItemPosition(); 
    int index2 = spinner2.getSelectedItemPosition(); 
    float value = Float.parseFloat(from.getText().toString()); 

    /* you have 8 units to convert from and to. 
    * that means 8*8 = 64 cases! 
    * to minimize work we convert from any selected unit to Centimeter 
    * then we convert from Centimeter to the desired unit. 
    */ 

    // ratios from google convertor 
    float ratio[] = {0.393701f, 0.0328084f, 0.0109361f, 6.21371e-6f, 10.0f, 1.0f, 0.01f, 1.0e-5f}; 
    float result = value/ratio[index1] * ratio[index2]; 
    to.setText(result+""); 
} 

}

расположение:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity" 
    android:orientation="vertical"> 

<Spinner 
    android:id="@+id/spinner1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_weight="1" /> 

<Spinner 
    android:id="@+id/spinner2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_weight="1" /> 

<EditText 
    android:id="@+id/InputEditText" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_weight="1" 
    android:ems="10" 
    android:inputType="number" > 

    <requestFocus /> 
</EditText> 

<TextView 
    android:id="@+id/OutputTextView" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_weight="1" 
    android:text="" /> 

<Button 
    android:id="@+id/btnSubmit" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:text="Button" 
    android:onClick="onClick" /> 

</LinearLayout> 

Good Luck