因此我写的应用程序有两个(到目前为止)在片段中的seekbars。评级栏位于主布局文件中。我需要发生的是根据SeekBars的值来改变评分栏的进度。下面是代码,让你有更好的想法:评分Bar not changing
片段Java文件
package com.example.tipquiz;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RatingBar;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
public class QuizFragment extends Fragment implements OnSeekBarChangeListener {
SeekBar fqBar, cBar;
TextView fqTV, cTV;
TextView fqTVP, cTVP;
RatingBar rb;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.quiz_fragment_layout, container,
false);
//Inflate the Main layout to access the RatingBar
View mainView = inflater.inflate(R.layout.activity_main, container, false);
//FoodQuality Bar
fqBar = (SeekBar) view.findViewById(R.id.seekBarFQ);
fqBar.setOnSeekBarChangeListener(this);
fqTV = (TextView) view.findViewById(R.id.textViewFQ2);
fqTVP = (TextView) view.findViewById(R.id.textViewFQP);
//Cleanliness Bar
cBar = (SeekBar) view.findViewById(R.id.seekBarC);
cBar.setOnSeekBarChangeListener(this);
cTV = (TextView) view.findViewById(R.id.textViewC2);
cTVP = (TextView) view.findViewById(R.id.textViewCP);
rb = (RatingBar) mainView.findViewById(R.id.ratingBar1);
return view;
}
@Override
public void onProgressChanged(SeekBar arg0, int progress, boolean fromUser) {
switch(arg0.getId()) {
case R.id.seekBarFQ:
if(progress > 70 && progress < 90){
fqTV.setText("Above Average - ");
rb.setRating(4);
}else if(progress > 40 && progress <= 70){
fqTV.setText("Average - ");
}else if(progress <= 40){
fqTV.setText("Awful - ");
}else if(progress > 90){
fqTV.setText("Perfect - ");
}
fqTVP.setText(progress + "%");
break;
case R.id.seekBarC:
if(progress > 70 && progress < 90){
cTV.setText("Above Average - ");
}else if(progress > 40 && progress <= 70){
cTV.setText("Average - ");
}else if(progress <= 40){
cTV.setText("Awful - ");
}else if(progress > 90){
cTV.setText("Perfect - ");
}
cTVP.setText(progress + "%");
break;
}
}
@Override
public void onStartTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar arg0) {
// TODO Auto-generated method stub
}
}
主类
package com.example.tipquiz;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.TextView;
public class MainActivity extends Activity implements OnRatingBarChangeListener{
// Testing Stuff to show the rating value, will need to use later for maths
static RatingBar rb;
TextView tv;
// The Image used as the DropDown button, Rotate code below
ImageView dropDownButton;
Boolean hasRotated = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dropDownButton = (ImageView) findViewById(R.id.dropDownButton);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
FragmentManager fm = getFragmentManager();
QuizFragment qf = new QuizFragment();
public void dropDown(View view){
if(hasRotated == false){
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out);
dropDownButton.setRotation(90);
ft.add(R.id.quizFragment, qf);
ft.show(qf);
ft.commit();
hasRotated = true;
}else if(hasRotated == true){
FragmentTransaction ft = fm.beginTransaction();
ft.setCustomAnimations(android.R.animator.fade_out, android.R.animator.fade_out);
dropDownButton.setRotation(0);
hasRotated = false;
ft.remove(qf);
ft.commit();
}
}
@Override
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromTouch) {
// final int numStars = ratingBar.getNumStars();
tv.setText(rating + "/5.0");
}
// http://www.compiletimeerror.com/2013/08/android-rating-bar-example.html#.U7SZ5fldXm4
}
我试图做到这一点的方法很多,而我所做过的大部分方法都会导致在Eclipse中发生错误或崩溃。我现在使用的方法不会崩溃或给出任何错误,但评级栏不会在应该更改时更改。我也试图简单地使用MainActivity.rb.setProgress(4);我试图使用MainActivity.rb.setProgress(4);我也尝试使用MainActivity.rb.setProgress(4);我试图使用MainActivity.rb.setProgress(4);在if语句,但我得到这个崩溃:
d /(938):HostConnection ::得到()新主机连接建立0xb7ca38d0,TID 938 W/EGL_emulation(938):eglSurfaceAttrib没有实现 d/OpenGLRenderer(938):启用调试模式0 E/InputEventReceiver(938):异常调度输入事件。 关闭VM W/dalvikvm(938):threadid = 1:线程退出时未捕获的异常(group = 0xb3b0db90) D/dalvikvm(938):GC_FOR_ALLOC已释放94K,6%空闲3184K/3360K,暂停31ms,总计37ms E/AndroidRuntime(938):致命例外:main E/AndroidRuntime(938):进程:com.example.tipquiz,PID:938 E/AndroidRuntime(938):java.lang.NullPointerException E/AndroidRuntime(938) ):at com.example.tipquiz.QuizFragment.onProgressChanged(QuizFragment.java:50) E/AndroidRuntime(938):at android.widget.SeekBar.onProgressRefresh(SeekBar.java:91) E/AndroidRuntime(938):在android.widget.ProgressBar.doRefreshProgress(ProgressBar.java:655) E/AndroidRuntime(938):在android.widget.Progress Bar.refreshProgress(ProgressBar.java:667) E/AndroidRuntime(938):at android.widget.ProgressBar.setProgress(ProgressBar.java:714) E/AndroidRuntime(938):at android.widget.AbsSeekBar.trackTouchEvent(在Android.widget.AbsSeekBar.onTouchEvent(AbsSeekBar.java:379) E/AndroidRuntime(938):at android.view.View.dispatchTouchEvent(View.java: E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959) E/AndroidRuntime(938):android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) E/AndroidRuntime/AndroidRuntime(938):在android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEv (ViewGroup.java:1959) E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEvent(ViewGroup。 E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)E/AndroidRuntime(938):android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) E/E/AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959) E/AndroidRuntime(938):android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) E/AndroidRuntime (938):在android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup。E:// AndroidRuntime(938):at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959) E/AndroidRuntime(938):at com.android.internal.policy.impl.PhoneWindow $ DecorView。 E/AndroidRuntime(938):at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515) E/AndroidRuntime(938):at android.app。 E/AndroidRuntime(938):at com.android.internal.policy.impl.PhoneWindow $ DecorView.dispatchTouchEvent(PhoneWindow.java:2014) E/AndroidRuntime(938):at Android.view.View.dispatchPointerEvent(View.java:7870) E/AndroidRuntime(938):at android.view.ViewRootImpl $ ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3919)E/AndroidRuntime(938):android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3406) E/AndroidRuntime(938):在android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3425):android.view.ViewRootImpl $ InputStage.onDeliverToNext(ViewRootImpl.java:3456) E/AndroidRuntime E/AndroidRuntime(938):在android.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3433):android.view.ViewRootImpl $ AsyncInputStage.forward(ViewRootImpl.java:3510) E/AndroidRuntime E/AndroidRuntime(938):at android.view.ViewRootImpl $ InputSt(E)/ AndroidRuntime(938):at android.view.ViewRootImpl $ AsyncInputStage.apply(ViewRootImpl.java:3567) age.deliver(ViewRootImpl.java:3406) E/AndroidRuntime(938):at android.view.ViewRootImpl $ InputStage.onDeliverToNext(ViewRootImpl.java:3456) E/AndroidRuntime(938):at android.view.ViewRootImpl $ InputStage.forward(ViewRootImpl.java:3425) E/AndroidRuntime(938):at android.view.ViewRootImpl $ InputStage.apply(ViewRootImpl.java:3433) E/AndroidRuntime(938):at android.view.ViewRootImpl $ InputStage.deliver(ViewRootImpl.java:3406) E/AndroidRuntime(938):at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5520) E/AndroidRuntime(938):at android.view.ViewRootImpl.doProcessInputEvents( E/AndroidRuntime(938):at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5471) E/AndroidRuntime(938):at和atRootImpl.java:5500) roid.view.ViewRootImpl $ WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5594) E/AndroidRuntime(938):在android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:182) E/AndroidRuntime(938):在机器人。 E/AndroidRuntime(938):在android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:174) E/AndroidRuntime(938):在android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl .java:5573) E/AndroidRuntime(938):at android.view.ViewRootImpl $ ConsumeBatchedInputRunnable.run(ViewRootImpl.java:5613) E/AndroidRuntime(938):at android.view.Choreographer $ CallbackRecord.run(Choreographer .java:749) E/AndroidRuntime(938):at android.view.Choreographer.doCal E/AndroidRuntime(938):在android.view.Choreographer.doFrame(Choreographer.java:530) E/AndroidRuntime(938):at android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:562) E/AndroidRuntime(938):at android.os.Handler.dispatchMessage(Handler.java:735)在Android.os.Handler.dispatchMessage(Handler.java:733) 95) E/AndroidRuntime(938):a
当您移动seekbar时,文本是否会更改? –
是的文本在两个查询条上都正常更改,并且它们彼此独立移动,这正是我想要的。但是,当食品质量seekbar进入70%文本区 –
@DtrollMC时,我发布的崩溃发生在'QuizFragment'中的第50行? –