在此我有八个edittext，如果用户在edittext1处输入输入，则会跳过edittext 2并在edittext 3中输入数据。我需要向用户提示错误，并且try块内的else部分不会被执行。在哪里我错了我该如何纠正这个逻辑错误
package com.sabari.results;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class Calculator extends AppCompatActivity {
TextView tv1;
TextView tv2;
TextView tv3;
TextView tv4;
TextView tv5;
TextView tv6;
TextView tv7;
TextView tv8;
TextView tv10;
EditText et1;
EditText et2;
EditText et3;
EditText et4;
EditText et5;
EditText et6;
EditText et7;
EditText et8;
Button b1;
Button b2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("CGPA Calculator");
setContentView(R.layout.calculator);
tv1 = (TextView) findViewById(R.id.textView);
tv2 = (TextView) findViewById(R.id.textView2);
tv3 = (TextView) findViewById(R.id.textView3);
tv4 = (TextView) findViewById(R.id.textView4);
tv5 = (TextView) findViewById(R.id.textView5);
tv6 = (TextView) findViewById(R.id.textView6);
tv7 = (TextView) findViewById(R.id.textView7);
tv8 = (TextView) findViewById(R.id.textView8);
b1 = (Button) findViewById(R.id.button);
b2 = (Button)findViewById(R.id.button2);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
et1 = (EditText) findViewById(R.id.editText);
et2 = (EditText) findViewById(R.id.editText2);
et3 = (EditText) findViewById(R.id.editText3);
et4 = (EditText) findViewById(R.id.editText4);
et5 = (EditText) findViewById(R.id.editText5);
et6 = (EditText) findViewById(R.id.editText6);
et7 = (EditText) findViewById(R.id.editText7);
et8 = (EditText) findViewById(R.id.editText8);
tv10 = (TextView) findViewById(R.id.textView10);
int n=1;
double no1,no2,no3,no4,no5,no6,no7,no8;
double g1=0,g2=0,g3=0,g4=0,g5=0,g6=0,g7=0,g8=0;
try {
no1 = Double.parseDouble(et1.getText().toString());
if(no1>=5&&no1<=10)
{
g1=no1;
n=1;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}
try{
no2 = Double.parseDouble(et2.getText().toString());
if(no2>=5&&no2<=10)
{
g2=no2;
n=2;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}
catch (NumberFormatException e){
e.printStackTrace();
}
try {
no3 = Double.parseDouble(et3.getText().toString());
if(no3>=5&&no3<=10)
{
g3=no3;
n=3;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}
try {
no4 = Double.parseDouble(et4.getText().toString());
if(no4>=5&&no4<=10)
{
g4=no4;
n=4;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e)
{
e.printStackTrace();
}
try{
no5 = Double.parseDouble(et5.getText().toString());
if(no5>=5&&no5<=10)
{
g5=no5;
n=5;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}
try{
no6 = Double.parseDouble(et6.getText().toString());
if(no6>=5&&no6<=10)
{
g6=no6;
n=6;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}
try {
no7 = Double.parseDouble(et7.getText().toString());
if(no7>=5&&no7<=10)
{
g7=no7;
n=7;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}try {
no8 = Double.parseDouble(et8.getText().toString());
if(no8>=5&&no8<=10)
{
g8=no8;
n=8;
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA",Toast.LENGTH_LONG);
}
}catch (NumberFormatException e){
e.printStackTrace();
}
double res = 0;
if((g1<=10)&&(g2<=10)&&(g3<=10)&&(g4<=10)&&(g5<=10)&&(g6<=10)&&(g7<=10)&&(g8<=10)) {
res = (g1+g2+g3+g4+g5+g6+g7+g8) / n;
tv10.setText("Your CGPA is : " + res);
Toast.makeText(Calculator.this, "Your CGPA is : " + res, Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(Calculator.this,"Please enter a valid GPA ",Toast.LENGTH_LONG).show();
}
}
});
b2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
et2.setText("");
et3.setText("");
et4.setText("");
et5.setText("");
et6.setText("");
et7.setText("");
et8.setText("");
tv10.setText("Your CGPA is : ");
et1.setText("");
}
});
}
}
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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 1st Semester GPA"
android:id="@+id/textView"
android:textColor="#000000" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:maxLength="4"
android:ems="10"
android:id="@+id/editText" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 2nd Semester GPA"
android:id="@+id/textView2"
android:textColor="#000000" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:maxLength="4"
android:ems="10"
android:id="@+id/editText2" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 3rd Semester GPA"
android:id="@+id/textView3"
android:textColor="#000000" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:maxLength="4"
android:id="@+id/editText3"
android:layout_gravity="center_horizontal" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 4th Semester GPA"
android:id="@+id/textView4"
android:textColor="#000000" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:maxLength="4"
android:id="@+id/editText4" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 5th Semester GPA"
android:id="@+id/textView5"
android:textColor="#000000" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:maxLength="4"
android:id="@+id/editText5" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 6th Semester GPA"
android:id="@+id/textView6"
android:textColor="#000000" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:maxLength="4"
android:ems="10"
android:id="@+id/editText6" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 7th Semester GPA"
android:id="@+id/textView7"
android:textColor="#000000" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:maxLength="4"
android:ems="10"
android:id="@+id/editText7"
android:layout_gravity="center_horizontal" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Enter Your 8th Semester GPA"
android:id="@+id/textView8"
android:textColor="#000000" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:maxLength="4"
android:id="@+id/editText8"
android:layout_gravity="center_horizontal" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1"
android:layout_marginTop="20dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:text="Calculate"
android:id="@+id/button"
android:layout_gravity="center_horizontal"
android:layout_marginRight="15dp"
android:layout_marginLeft="15dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Clear"
android:id="@+id/button2"
android:layout_gravity="right|center_horizontal"
android:layout_weight="0.5"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Your CGPA is :"
android:id="@+id/textView10"
android:layout_gravity="center_horizontal"
android:textColor="#000000"
android:layout_marginTop="25dp" />
</LinearLayout>
</ScrollView>
</LinearLayout>
编辑类
package com.sabari.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
TextView tv1;
TextView tv2;
TextView tv3;
TextView tv4;
TextView tv5;
TextView tv6;
TextView tv7;
TextView tv8;
TextView tv10;
EditText[] et=new EditText[8];
Button b1;
Button b2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("CGPA Calculator");
setContentView(R.layout.activity_main);
tv1 = (TextView) findViewById(R.id.textView);
tv2 = (TextView) findViewById(R.id.textView2);
tv3 = (TextView) findViewById(R.id.textView3);
tv4 = (TextView) findViewById(R.id.textView4);
tv5 = (TextView) findViewById(R.id.textView5);
tv6 = (TextView) findViewById(R.id.textView6);
tv7 = (TextView) findViewById(R.id.textView7);
tv8 = (TextView) findViewById(R.id.textView8);
b1 = (Button) findViewById(R.id.button);
b2 = (Button)findViewById(R.id.button2);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
et[0] = (EditText) findViewById(R.id.editText);
et[1] = (EditText) findViewById(R.id.editText2);
et[2]= (EditText) findViewById(R.id.editText3);
et[3] = (EditText) findViewById(R.id.editText4);
et[4] = (EditText) findViewById(R.id.editText5);
et[5] = (EditText) findViewById(R.id.editText6);
et[6] = (EditText) findViewById(R.id.editText7);
et[7] = (EditText) findViewById(R.id.editText8);
tv10 = (TextView) findViewById(R.id.textView10);
private void initAndValidateEditText(final EditText editText,final int index){
editText.addTextChangedListener(new TextWatcher() {
double res = 0;
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
double value=Double.parseDouble(editText.getText().toString());
if(value>=5&&value<=10){
if(index!=7){
et[index+1].setEnabled(true);
initAndValidateEditText(et[0], 0);
initAndValidateEditText(et[1], 1);
initAndValidateEditText(et[2], 2);
initAndValidateEditText(et[3], 3);
initAndValidateEditText(et[4], 4);
initAndValidateEditText(et[5], 5);
initAndValidateEditText(et[6], 6);
initAndValidateEditText(et[7], 7);
}
}else{
Toast.makeText(MainActivity.this,"Enter",Toast.LENGTH_LONG).show();
if(index!=7){
et[index+1].setEnabled(false);
}
}
res = value;
tv10.setText("Your CGPA is : " + res);
}
});
}
}
});
b2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
tv10.setText("Your CGPA is : ");
}
});
}
}
