我正在为项目创建一个测验，当检查了正确答案（radiobutton）时，我想要更改imageView和textcolor，但我无法完成。
在我的代码下面：
...
谢谢
更新 这是我的代码，但它仍然无法正常工作。 也许我有一些逻辑错误。 我想知道我是否可以使用|交换机箱中的操作员。
package com.example.android.quizapp;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class Main2Activity extends AppCompatActivity {
RadioGroup q1Group;
RadioGroup q2Group;
RadioGroup q3Group;
RadioGroup q4Group;
RadioGroup q5Group;
RadioGroup q6Group;
RadioButton q1R1;
RadioButton q1R2;
RadioButton q1R3;
RadioButton q1R4;
RadioButton q2R1;
RadioButton q2R2;
RadioButton q2R3;
RadioButton q2R4;
RadioButton q3R1;
RadioButton q3R2;
RadioButton q3R3;
RadioButton q3R4;
RadioButton q4R1;
RadioButton q4R2;
RadioButton q4R3;
RadioButton q4R4;
RadioButton q5R1;
RadioButton q5R2;
RadioButton q5R3;
RadioButton q5R4;
RadioButton q6R1;
RadioButton q6R2;
RadioButton q6R3;
RadioButton q6R4;
CheckBox q7R1;
CheckBox q7R2;
CheckBox q7R3;
CheckBox q7R4;
EditText q8R1;
ImageView q1Img;
ImageView q2Img;
ImageView q3Img;
ImageView q4Img;
ImageView q5Img;
ImageView q6Img;
ImageView q7Img;
ImageView q8Img;
int score=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
final Button button = findViewById(R.id.sub);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
checkAnswers();
}});
q1Group = findViewById(R.id.q1Group);
q2Group = findViewById(R.id.q2Group);
q3Group =findViewById(R.id.q3Group);
q4Group =findViewById(R.id.q4Group);
q5Group =findViewById(R.id.q5Group);
q6Group =findViewById(R.id.q6Group);
q1R1 = findViewById(R.id.q1RadioAnswer1);
q1R2 = findViewById(R.id.q1RadioAnswer2);
q1R3 = findViewById(R.id.q1RadioAnswer3);
q1R4 = findViewById(R.id.q1RadioAnswer4);
q2R1 = findViewById(R.id.q2RadioAnswer1);
q2R2 = findViewById(R.id.q2RadioAnswer2);
q2R3 = findViewById(R.id.q2RadioAnswer3);
q2R4 = findViewById(R.id.q2RadioAnswer4);
q3R1 = findViewById(R.id.q3RadioAnswer1);
q3R2 = findViewById(R.id.q3RadioAnswer2);
q3R3 = findViewById(R.id.q3RadioAnswer3);
q3R4 = findViewById(R.id.q3RadioAnswer4);
q4R1 = findViewById(R.id.q4RadioAnswer1);
q4R2 = findViewById(R.id.q4RadioAnswer2);
q4R3 = findViewById(R.id.q4RadioAnswer3);
q4R4 = findViewById(R.id.q4RadioAnswer4);
q5R1 = findViewById(R.id.q5RadioAnswer1);
q5R2 = findViewById(R.id.q5RadioAnswer2);
q5R3 = findViewById(R.id.q5RadioAnswer3);
q5R4 = findViewById(R.id.q5RadioAnswer4);
q6R1 = findViewById(R.id.q6RadioAnswer1);
q6R2 = findViewById(R.id.q6RadioAnswer2);
q6R3 = findViewById(R.id.q6RadioAnswer3);
q6R4 = findViewById(R.id.q6RadioAnswer4);
q7R1 = findViewById(R.id.q7checkBox1);
q7R2 = findViewById(R.id.q7checkBox2);
q7R3 = findViewById(R.id.q7checkBox3);
q7R4 = findViewById(R.id.q7checkBox4);
q8R1 = findViewById(R.id.q8edit);
q1Img = findViewById(R.id.imgQ1);
q2Img = findViewById(R.id.imgQ2);
q3Img = findViewById(R.id.imgQ3);
q4Img = findViewById(R.id.imgQ4);
q5Img = findViewById(R.id.imgQ5);
q6Img = findViewById(R.id.imgQ6);
q7Img = findViewById(R.id.imgQ7);
q8Img = findViewById(R.id.imgQ8);
}
public void q1Check (){
q1Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch(id){
case R.id.q1RadioAnswer3:
score = score + (100/8);
q1R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q1Img.setImageResource(R.drawable.cska);
break;
case R.id.q1RadioAnswer1 | R.id.q1RadioAnswer2 | R.id.q1RadioAnswer4:
q1R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q1R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q1R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q1R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q1Img.setImageResource(R.drawable.cska);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct1), Toast.LENGTH_SHORT).show();
break;
}
}
});}
public void q2Check(){
q2Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch(id){
case R.id.q2RadioAnswer2:
score = score + (100/8);
q2R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q2Img.setImageResource(R.drawable.askriga);
break;
case R.id.q2RadioAnswer1 | R.id.q2RadioAnswer3 | R.id.q2RadioAnswer4:
q2R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q2R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q2R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q2R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q2Img.setImageResource(R.drawable.askriga);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct2), Toast.LENGTH_SHORT).show();
break;
}
}
});}
public void q3Check (){
q3Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch (id){
case R.id.q3RadioAnswer2:
score = score + (100/8);
q3R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q3Img.setImageResource(R.drawable.berlin);
break;
case R.id.q3RadioAnswer1 | R.id.q3RadioAnswer3 |R.id.q3RadioAnswer4:
q3R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q3R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q3R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q3R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q3Img.setImageResource(R.drawable.berlin);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct3), Toast.LENGTH_SHORT).show();
}
}
});}
public void q4Check (){
q4Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch (id){
case R.id.q4RadioAnswer1:
score = score + (100/8);
q4R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q4Img.setImageResource(R.drawable.real);
break;
case R.id.q4RadioAnswer2 | R.id.q4RadioAnswer3 | R.id.q4RadioAnswer4:
q4R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q4R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q4R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q4R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q4Img.setImageResource(R.drawable.real);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct4), Toast.LENGTH_SHORT).show();
break;
}
}
});}
public void q5Check (){
q5Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch (id){
case R.id.q5RadioAnswer2:
score = score + (100/8);
q5R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q5Img.setImageResource(R.drawable.manu);
break;
case R.id.q5RadioAnswer1 | R.id.q5RadioAnswer3 | R.id.q5RadioAnswer4:
q5R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q5R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q5R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q5R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q5Img.setImageResource(R.drawable.manu);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct5), Toast.LENGTH_SHORT).show();
}
}
});}
public void q6Check (){
q6Group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int id) {
switch (id){
case R.id.q6RadioAnswer2:
score = score + (100/8);
q6R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q6Img.setImageResource(R.drawable.anderl);
break;
case R.id.q6RadioAnswer1 | R.id.q6RadioAnswer3 | R.id.q6RadioAnswer4:
q6R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q6R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q6R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q6R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q6Img.setImageResource(R.drawable.anderl);
Toast.makeText(getApplicationContext(), getResources().getString(R.string.correct6), Toast.LENGTH_SHORT).show();
}
}
});}
public void q7Check(){
if (q7R1.isChecked() && q7R2.isChecked()){
score = score + (100/8);
q7R1.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q7R2.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radionbuttonstate));
q7Img.setImageResource(R.drawable.ddvspan);
}
else{
q7R3.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q7R4.setTextColor(ContextCompat.getColorStateList(getApplicationContext(),R.color.radiobuttonwrong));
q7Img.setImageResource(R.drawable.ddvspan);
Toast.makeText(this, getResources().getString(R.string.correct7), Toast.LENGTH_SHORT).show();
}}
public void q8Check(){
if ((q8R1.getText().toString().toLowerCase().equals("reyes") | (q8R1.getText().toString().toLowerCase().equals("felipe reyes")))){
score = score + (100/8);
Toast.makeText(this, getResources().getString(R.string.correct8), Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(this, getResources().getString(R.string.correct8_1), Toast.LENGTH_SHORT).show();
}
}
public void checkAnswers(){
q1Check();
q2Check();
q3Check();
q4Check();
q5Check();
q6Check();
q7Check();
q8Check();
final int plScore = score;
Intent sendScore = new Intent(this, Main3Activity.class);
sendScore.putExtra("score", plScore);
startActivity(sendScore);
}
}
答案 0 :(得分：1)
对于单选按钮上的事件，您必须将setOnCheckedChangeListener放在该组。
Xml代码：
<RadioGroup
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1"
android:gravity="center_horizontal"
android:orientation="horizontal"
android:id="@+id/radioGroup">
<RadioButton
android:id="@+id/upcRadio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="UPC"
android:checked="true"
android:textSize="10dp" />
<RadioButton
android:id="@+id/prodNameRadio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Product Name"
android:checked="false"
android:textSize="10dp" />
<RadioButton
android:id="@+id/catIdRadio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Category Id"
android:checked="false"
android:textSize="10dp" />
<RadioButton
android:id="@+id/catNameRadio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Category Name"
android:checked="false"
android:textSize="10dp" />
</RadioGroup>
Java代码：
RadioGroup radioGrp;
RadioButton upcR, productNameR, categoryIdR, categoryNameR;
radioGrp = (RadioGroup) findViewById(R.id.radioGroup);
upcR = (RadioButton) findViewById(R.id.upcRadio);
productNameR = (RadioButton) findViewById(R.id.prodNameRadio);
categoryIdR = (RadioButton) findViewById(R.id.catIdRadio);
categoryNameR = (RadioButton) findViewById(R.id.catNameRadio);
private void RadioButtonCheck() {
radioGrp.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup arg0, int id) {
switch (id) {
case R.id.upcRadio:
Log.e("Radio", "upc");
editTextSearch.setHint("Enter UPC Value");
editTextSearch.setText("");
editTextSearch.setInputType(View.AUTOFILL_TYPE_DATE);
editTextSearch.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
break;
case R.id.prodNameRadio:
Log.e("Radio", "ProductName");
editTextSearch.setHint("Enter Product Name");
editTextSearch.setInputType(View.AUTOFILL_TYPE_TEXT);
// editTextSearch.setKeyListener(DigitsKeyListener.getInstance("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "));
editTextSearch.setText("");
break;
case R.id.catIdRadio:
Log.e("Radio", "catId");
editTextSearch.setHint("Enter Category Id");
editTextSearch.setInputType(View.AUTOFILL_TYPE_DATE);
editTextSearch.setKeyListener(DigitsKeyListener.getInstance("0123456789"));
editTextSearch.setText("");
break;
case R.id.catNameRadio:
Log.e("Radio", "catName");
editTextSearch.setHint("Enter Category Name");
editTextSearch.setInputType(View.AUTOFILL_TYPE_TEXT);
// editTextSearch.setKeyListener(DigitsKeyListener.getInstance("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "));
editTextSearch.setText("");
break;
default:
break;
}
}
});
}
答案 1 :(得分：0)
myRadio.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//DO YOUR STAFF HERE
}
});