为什么 RatingBarChangeListner 上的评级栏不起作用?
Why rating bar's onRatingBarChangeListner dose not work?
我正在尝试在我的代码中添加 rating bar
。我正在使用 onRatingBarChangeListner
来获取评分栏的值。但是 rating bar
根本没有响应。它不会被选中或改变颜色。
public class SurveyActivity extends AppCompatActivity implements getQuestionsAsyncTask.GetQuestions,RatingBar.OnRatingBarChangeListener{
private ArrayList<Question> mQuestionsArrayList;
private TextView mTextQuestion1,mTextQuestion2;
private RatingBar ratingbar1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_survey);
// addListenerOnButtonClick();
mTextQuestion1 = (TextView)findViewById(R.id.textQuestion1);
mTextQuestion2 = (TextView)findViewById(R.id.textQuestion2);
Button next = (Button)findViewById(R.id.btn_next);
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
float rating=ratingBar.getRating();
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
// startActivity(new Intent(SurveyActivity.this,UserDetailsActivity.class));
}
});
mQuestionsArrayList = new ArrayList<>();
getQuestionsAsyncTask getQuestionsAsyncTask = new getQuestionsAsyncTask(this,this,mQuestionsArrayList);
getQuestionsAsyncTask.execute();
}
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
}
试过了,但没有用。
<RatingBar
android:id="@+id/MyRating"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:isIndicator="true"
android:numStars="5"
android:stepSize="0.1"
android:layout_above="@+id/textQuestion2"
android:layout_alignParentEnd="true"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_alignParentRight="true" />
也试过这个tutorial
怎么了?有人可以帮忙吗?谢谢..
编辑:尝试了两个答案仍然无效:
public class SurveyActivity extends AppCompatActivity implements getQuestionsAsyncTask.GetQuestions,RatingBar.OnRatingBarChangeListener{
private ArrayList<Question> mQuestionsArrayList;
private TextView mTextQuestion1,mTextQuestion2;
private RatingBar ratingbar1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_survey);
Button next = (Button)findViewById(R.id.btn_next);
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
ratingBar.setOnRatingBarChangeListener(this);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
float rating=ratingBar.getRating();
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
v = ratingBar.getRating();
Toast.makeText(getApplicationContext(), "Your Selected Ratings : " + String.valueOf(v), Toast.LENGTH_LONG).show();
}
你的onRatingChanged
应该如下
@Override
public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
}
同时在您的 ratingBar
上添加 setOnRatingBarChangeListener
ratingBar.setOnRatingBarChangeListener(this);
编辑 1:对于 Toast,请尝试以下
String rating=String.valueOf(ratingBar.getRating());
Toast.makeText(getApplicationContext(), rating, Toast.LENGTH_LONG).show();
编辑 2:您无法更改评级,因为 isIndicator
属性。根据 android 的文档
android:isIndicator Whether this rating bar is an indicator (and
non-changeable by the user).
所以删除 属性 并将你的 ratingBar
更改为以下
<RatingBar
android:id="@+id/MyRating"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:numStars="5"
android:stepSize="0.1"
android:layout_above="@+id/textQuestion2"
android:layout_alignParentEnd="true"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_alignParentRight="true" />
还有为什么我删除了行
style="?android:attr/ratingBarStyleSmall"
参考this
您忘记在 ratingBar 视图上设置 Change 侦听器,
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
ratingBar.setOnRatingBarChangeListener(this);
我正在尝试在我的代码中添加 rating bar
。我正在使用 onRatingBarChangeListner
来获取评分栏的值。但是 rating bar
根本没有响应。它不会被选中或改变颜色。
public class SurveyActivity extends AppCompatActivity implements getQuestionsAsyncTask.GetQuestions,RatingBar.OnRatingBarChangeListener{
private ArrayList<Question> mQuestionsArrayList;
private TextView mTextQuestion1,mTextQuestion2;
private RatingBar ratingbar1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_survey);
// addListenerOnButtonClick();
mTextQuestion1 = (TextView)findViewById(R.id.textQuestion1);
mTextQuestion2 = (TextView)findViewById(R.id.textQuestion2);
Button next = (Button)findViewById(R.id.btn_next);
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
float rating=ratingBar.getRating();
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
// startActivity(new Intent(SurveyActivity.this,UserDetailsActivity.class));
}
});
mQuestionsArrayList = new ArrayList<>();
getQuestionsAsyncTask getQuestionsAsyncTask = new getQuestionsAsyncTask(this,this,mQuestionsArrayList);
getQuestionsAsyncTask.execute();
}
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
}
试过了,但没有用。
<RatingBar
android:id="@+id/MyRating"
style="?android:attr/ratingBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:isIndicator="true"
android:numStars="5"
android:stepSize="0.1"
android:layout_above="@+id/textQuestion2"
android:layout_alignParentEnd="true"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_alignParentRight="true" />
也试过这个tutorial
怎么了?有人可以帮忙吗?谢谢..
编辑:尝试了两个答案仍然无效:
public class SurveyActivity extends AppCompatActivity implements getQuestionsAsyncTask.GetQuestions,RatingBar.OnRatingBarChangeListener{
private ArrayList<Question> mQuestionsArrayList;
private TextView mTextQuestion1,mTextQuestion2;
private RatingBar ratingbar1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_survey);
Button next = (Button)findViewById(R.id.btn_next);
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
ratingBar.setOnRatingBarChangeListener(this);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
float rating=ratingBar.getRating();
Toast.makeText(getApplicationContext(),"Your Selected Ratings : " + String.valueOf(rating),Toast.LENGTH_LONG).show();
}
});
}
@Override
public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
v = ratingBar.getRating();
Toast.makeText(getApplicationContext(), "Your Selected Ratings : " + String.valueOf(v), Toast.LENGTH_LONG).show();
}
你的onRatingChanged
应该如下
@Override
public void onRatingChanged(RatingBar ratingBar, float v, boolean b) {
}
同时在您的 ratingBar
setOnRatingBarChangeListener
ratingBar.setOnRatingBarChangeListener(this);
编辑 1:对于 Toast,请尝试以下
String rating=String.valueOf(ratingBar.getRating());
Toast.makeText(getApplicationContext(), rating, Toast.LENGTH_LONG).show();
编辑 2:您无法更改评级,因为 isIndicator
属性。根据 android 的文档
android:isIndicator Whether this rating bar is an indicator (and non-changeable by the user).
所以删除 属性 并将你的 ratingBar
更改为以下
<RatingBar
android:id="@+id/MyRating"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:numStars="5"
android:stepSize="0.1"
android:layout_above="@+id/textQuestion2"
android:layout_alignParentEnd="true"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_alignParentRight="true" />
还有为什么我删除了行
style="?android:attr/ratingBarStyleSmall"
参考this
您忘记在 ratingBar 视图上设置 Change 侦听器,
final RatingBar ratingBar = (RatingBar)findViewById(R.id.MyRating);
ratingBar.setOnRatingBarChangeListener(this);