好的，所以我在Android工作室中为Android App个性测验编写了这段代码。我的GUi窗口工作正常，它正确链接到我的手机，看起来不错。但是，当我单击提交按钮（上传到强制）时，当我输入正确的响应时，不会显示不同的图片。我知道这不是我的照片的问题，因为如果我把ImageSetter从开关盒中取出它会出现在App中。所以我得出的结论是，不知何故，我在GUI窗口中从EditText字段框中读取文本的代码不对，或者我正在构建字母列表以检查错误。 （是的，我知道把它放在一个arraylist只是为了把它变成一个字符串是多余的，但我是按照我想到的第一种方式做的。有任何建议我花了几个小时在这上面，不能想到出了什么问题？你们是我最欣赏它。
`
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
EditText nameTxt, answer2, answer3, answer4, answer5, answer6, answer7, answer8;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ImageView imageview = (ImageView)findViewById(R.id.showCharacter);
//have to cast it into type (EditText) since by default is is a GUI container and an error
//will be generated if you do not again specify that the container is type EditText
nameTxt = (EditText) findViewById(R.id.inputA1);//links nameTxt to GUI editText field
answer2 = (EditText) findViewById(R.id.inputA2);//links nameTxt to GUI editText field
answer3 = (EditText) findViewById(R.id.inputA3);//links nameTxt to GUI editText field
answer4 = (EditText) findViewById(R.id.inputA4);//links nameTxt to GUI editText field
answer5 = (EditText) findViewById(R.id.inputA5);//links nameTxt to GUI editText field
answer6 = (EditText) findViewById(R.id.inputA6);//links nameTxt to GUI editText field
answer7 = (EditText) findViewById(R.id.inputA7);//links nameTxt to GUI editText field
answer8 = (EditText) findViewById(R.id.inputA8);//links nameTxt to GUI editText field
ArrayList<String> responses = new ArrayList<String>();//string array to hold temp responses
String respStr = "";//used for comparison to the answer key since it is easier than using an
//arraylist for comparison.
String character = "";// honestly this doesnt output anything or do anything except help me
//keep track of which key corresponds to which picture so I dont get confused
//creates a new button called addBtn and likes it to the GUI button btnAdd
final Button addBtn = (Button) findViewById(R.id.btnAdd);
if (addBtn != null) {//designed to not allow the submission button to be clickable unless
//the first field is filled out
addBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(),"Using the Force", Toast.LENGTH_SHORT).show();
}
}) ;
}
nameTxt.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
addBtn.setEnabled(String.valueOf(nameTxt.getText()).trim().length() > 0);
}
@Override
public void afterTextChanged(Editable s) {
}
});
//takes the input of the first question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant wway to ensure that input from the
//user can be either upper or lower case.
String q1S = "";
q1S = nameTxt.getText().toString();
q1S = q1S.trim().toLowerCase();
if (q1S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q1S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q1S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q1S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q1S.equalsIgnoreCase("e")){
responses.add("e");
}
for(int i =0; 0>responses.size(); i++){
respStr += responses.get(i);
}
//takes the input of the second question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant wway to ensure that input from the
//user can be either upper or lower case.
String q2S = "";
q2S = nameTxt.getText().toString();
q2S = q2S.trim().toLowerCase();
if (q2S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q2S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q2S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q2S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q2S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the third question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q3S = "";
q3S = nameTxt.getText().toString();
q3S = q3S.trim().toLowerCase();
if (q3S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q3S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q3S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q3S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q3S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the fourth question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q4S = "";
q4S = nameTxt.getText().toString();
q4S = q4S.trim().toLowerCase();
if (q4S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q4S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q4S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q4S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q4S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the fifth question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q5S = "";
q5S = nameTxt.getText().toString();
q5S = q5S.trim().toLowerCase();
if (q5S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q5S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q5S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q5S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q5S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the sixth question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q6S = "";
q6S = nameTxt.getText().toString();
q6S = q6S.trim().toLowerCase();
if (q6S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q6S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q6S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q6S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q6S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the seventh question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q7S = "";
q7S = nameTxt.getText().toString();
q7S = q7S.trim().toLowerCase();
if (q7S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q7S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q7S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q7S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q7S.equalsIgnoreCase("e")){
responses.add("e");
}
//takes the input of the eigth question using getText() then it must convert getText which
//of type EditText to type string using toString. Then the variable is set to itself with
//no leading or trailing spaces using the .trim(0 and then made lowercase by using the
//toLowerCase. equalsIgnoreCase is used as a redundant way to ensure that input from the
//user can be either upper or lower case.
String q8S = "";
q8S = nameTxt.getText().toString();
q8S = q8S.trim().toLowerCase();
if (q8S.equalsIgnoreCase("a")){
responses.add("a");
}
if (q8S.equalsIgnoreCase("b")){
responses.add("b");
}
if (q8S.equalsIgnoreCase("c")){
responses.add("c");
}
if (q8S.equalsIgnoreCase("d")){
responses.add("d");
}
if (q8S.equalsIgnoreCase("e")){
responses.add("e");
}
//imageview.setImageResource(R.drawable.sidious);
switch(respStr){
case "aabaacaa":
character ="Sideous";
imageview.setImageResource(R.drawable.sidious);
break;
case "abdbadaa":
character ="Maul";
imageview.setImageResource(R.drawable.maul);
break;
case "aadccdab":
character ="Vader";
imageview.setImageResource(R.drawable.vader);
break;
case "bbbdcaaa":
character ="Boba Fett";
imageview.setImageResource(R.drawable.boba);
break;
case "abeeadba":
character ="Grevous";
imageview.setImageResource(R.drawable.grievous);
break;
case "aaacbabb":
character ="Windu";
imageview.setImageResource(R.drawable.windu);
break;
case "abacbbbb":
character ="Obi-Won-Kenobi";
imageview.setImageResource(R.drawable.kenobi);
break;
case "bacbcaab":
character ="Solo";
imageview.setImageResource(R.drawable.solo);
break;
case "bbaccaba":
character ="Clone";
imageview.setImageResource(R.drawable.trooper);
break;
case "aacbbabb":
character ="Anakin";
imageview.setImageResource(R.drawable.anakin);
break;
default:
character = "R2D2";
}
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
`
答案 0 :(得分：0)
你的for循环有错误的条件。
您的代码：
for(int i =0; 0>responses.size(); i++){
respStr += responses.get(i);
}
应该是：
for(int i=0; i<responses.size(); i++){
respStr += responses.get(i);
}