I Am New In Larning Android I Have To Many Error But Cant Have Idea How To Resolve Thise Error

Question

2.33/5 (2 votes)

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package com.example.test1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListner
{
Textview dollor;
Textview euro;
RedioButton dte;
RedioButton etd;
Button calculate;

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

dollor=(textview)this.findViewById(R.id.dollor);
euro=(textview)this.findViewById(R.id.euro);

dte=(RedioButton)this.findViewById(R.id.dte);
etd=(RedioButton)this.findViewById(R.id.etd);

calculate=(Button)this.findViewById(R.id.calculate);
calculate.setOnClickListener(this);
}

public void onClick(View v)
{
if(dte.isCheked())
{
convertDollorToEuro();
}
if(etd.isCheked())
{
convertDollorToEuro();
}

protected void convertDollorToEuro()
{
double val= Double.parseDouble(Dollor.getText.toString());
euro.setText(Double.toString(val*0.60));

}

protected void convertDollorToEuro()
{
double val= Double.parseDouble(euro.getText.toString());
Dollor.setText(Double.toString(val*0.60));

}
}

}
GETING ERROR

Description Resource Path Location Type
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 27 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 26 Java Problem
The method setOnClickListener(View.OnClickListener) in the type View is not applicable for the arguments (MainActivity) MainActivity.java /test1/src/com/example/test1 line 30 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 27 Java Problem
Textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 24 Java Problem
textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 23 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 26 Java Problem
textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 24 Java Problem
Syntax error, insert "enum Identifier" to complete EnumHeaderName MainActivity.java /test1/src/com/example/test1 line 45 Java Problem
Syntax error on token "void", @ expected MainActivity.java /test1/src/com/example/test1 line 45 Java Problem
Syntax error on token "void", @ expected MainActivity.java /test1/src/com/example/test1 line 52 Java Problem
Syntax error, insert "EnumBody" to complete BlockStatement MainActivity.java /test1/src/com/example/test1 line 45 Java Problem
The method convertDollorToEuro() is undefined for the type MainActivity MainActivity.java /test1/src/com/example/test1 line 37 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 35 Java Problem
The method convertDollorToEuro() is undefined for the type MainActivity MainActivity.java /test1/src/com/example/test1 line 41 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 39 Java Problem
[I18N] Hardcoded string "Dollor to Euro", should use @string resource activity_main.xml /test1/res/layout line 42 Android Lint Problem
[I18N] Hardcoded string "Euro to Dollor", should use @string resource activity_main.xml /test1/res/layout line 47 Android Lint Problem
[I18N] Hardcoded string "Calculate", should use @string resource activity_main.xml /test1/res/layout line 53 Android Lint Problem
[I18N] Hardcoded string "DOLLOR", should use @string resource activity_main.xml /test1/res/layout line 18 Android Lint Problem
This text field does not specify an inputType or a hint activity_main.xml /test1/res/layout line 20 Android Lint Problem
[I18N] Hardcoded string "EURO", should use @string resource activity_main.xml /test1/res/layout line 30 Android Lint Problem
This text field does not specify an inputType or a hint activity_main.xml /test1/res/layout line 33 Android Lint Problem
Textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 13 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 14 Java Problem
RedioButton cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 15 Java Problem
AbsoluteLayout is deprecated activity_main.xml /test1/res/layout line 2 Android Lint Problem
Textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 23 Java Problem
OnClickListner cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 10 Java Problem
Textview cannot be resolved to a type MainActivity.java /test1/src/com/example/test1 line 12 Java Problem
Syntax error, insert "enum Identifier" to complete EnumHeaderName MainActivity.java /test1/src/com/example/test1 line 52 Java Problem
Syntax error, insert "EnumBody" to complete BlockStatement MainActivity.java /test1/src/com/example/test1 line 52 Java Problem

Posted 30-Jan-14 0:23am

Rajnish D mishra

Add a Solution

2 solutions

Solution 1

You have typed RedioButton, it should be RadioButton.

Posted 30-Jan-14 0:58am

Richard MacCutchan

Comments

Rajnish D mishra 30-Jan-14 7:13am

RadioButton cannot be resolved to a type MainActivity.java/test1/src/com/example/test1 line 27 Java
i correct my misstep
but this error what say how i resolve to type

Richard MacCutchan 30-Jan-14 7:22am

Read what I have posted above; there is no such type as RedioButton.

Rajnish D mishra 30-Jan-14 14:14pm

thnx bro

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Peter Leow · Accepted Answer · 2014-01-30T05:43:00

I can see that you have tried very hard to learn Android, that is commendable. For that, I am more than happy to spend extra time looking into your problem.
Among other things, there are many typo errors and wrong cases, remember Java is case-sensitive
1. OnClickListner should be OnClickListener
2. Textview should be TextView
3. RedioButton should be RadioButton
4. isCheked should be isChecked
5. Why two similar methods: convertDollorToEuro()
6. ...
I have created a working android project based on my understanding of your attempt, take a look and learn for yourself.
MainActivity.java

package com.example.test1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

	TextView dollar;
	TextView euro;
	RadioButton dte;
	RadioButton etd;
	Button calculate;

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

		dollar = (TextView) this.findViewById(R.id.dollar);
		euro = (TextView) this.findViewById(R.id.euro);

		dte = (RadioButton) this.findViewById(R.id.dte);
		etd = (RadioButton) this.findViewById(R.id.etd);

		calculate = (Button) this.findViewById(R.id.calculate);
		calculate.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) {
		if(dte.isChecked())
		{
			convertDollarToEuro();
		}
		else if(etd.isChecked())
		{
			convertEuroToDollar();	
		}
	}

	protected void convertDollarToEuro() {
		double val = Double.parseDouble(dollar.getText().toString());
		euro.setText(Double.toString(val * 0.7378));

	}

	protected void convertEuroToDollar() {
		double val = Double.parseDouble(euro.getText().toString());
		dollar.setText(Double.toString(val * 1.3554));

	}

}

activity_main.xml

XML

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

   <!-- dollar Label -->
    <TextView android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Dollar"
        android:paddingLeft="10dip"
        android:paddingRight="10dip"
        android:paddingTop="10dip"
        android:textSize="17dip"/>
    
    <!-- input dollar -->
	<EditText android:id="@+id/dollar"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"
	    android:layout_margin="5dip"
	    android:layout_marginBottom="15dip"
	    android:singleLine="true"
	    android:inputType="numberDecimal"/>
	
	<!-- euro Label -->
    <TextView android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Euro"
        android:paddingLeft="10dip"
        android:paddingRight="10dip"
        android:paddingTop="10dip"
        android:textSize="17dip"/>
    
    <!-- input euro -->
	<EditText android:id="@+id/euro" 
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"
	    android:layout_margin="5dip"
	    android:layout_marginBottom="15dip"
	    android:singleLine="true"
	    android:inputType="numberDecimal"/>

        <RadioGroup
        android:id="@+id/radioGroup1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:orientation="horizontal" >

        <RadioButton
            android:id="@+id/dte"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/dte" />
        
        <RadioButton
            android:id="@+id/etd"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/etd" />

    </RadioGroup>

        <Button
            android:id="@+id/calculate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="calculate" />
    
</LinearLayout>

This program will throw error when both text boxes are blank while clicking the button, I shall leave that to you as exercise.