这是一个简单的问题，但我只是不明白什么是错的。我正在做一个Android应用程序，我希望屏幕在int命中一定数量时更改。
这是我的If语句
if (end=5)
{
Intent i = new Intent(Quiz.this, Explain1.class);
startActivity(i);
finish();
}
应用程序的其余部分工作正常，但此语句在其之前和之后创建语法错误。
这是全班。目前的答案还没有解决这个问题
public class Quiz extends Activity
{
MediaPlayer mysound;
boolean loaded=false;
private SoundPool soundPool,soundPool2;
int soundID, soundID2;
String Ans;
TextView ans1,ans2,ans3,ans4,ans5,ans6,ans7,ans8;
TextView Q1,Q2,Q3,Q4,Q5;
int q1=0, q2=0, q3=0, q4=0, q5=0;
int end = q1+q2+q3+q4+q5;
if (end.equals(5))
{
Intent i = new Intent(Quiz.this, Explain1.class);
startActivity(i);
finish();
};
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.quiz);
ans1 = (TextView) findViewById(R.id.two4);
ans2 = (TextView) findViewById(R.id.one6);
ans3 = (TextView) findViewById(R.id.three2);
ans4 = (TextView) findViewById(R.id.four0);
ans5 = (TextView) findViewById(R.id.four8);
ans6 = (TextView) findViewById(R.id.six4);
ans7 = (TextView) findViewById(R.id.seven2);
ans8 = (TextView) findViewById(R.id.eight);
Q1 =(TextView) findViewById(R.id.ans1);
Q2 =(TextView) findViewById(R.id.ans4);
Q3 =(TextView) findViewById(R.id.ans3);
Q4 =(TextView) findViewById(R.id.ans2);
Q5 =(TextView) findViewById(R.id.ans5);
Q1.setOnDragListener(dragListener);
Q2.setOnDragListener(dragListener2);
Q3.setOnDragListener(dragListener3);
Q4.setOnDragListener(dragListener4);
Q5.setOnDragListener(dragListener5);
ans1.setOnTouchListener(listen);
ans2.setOnTouchListener(listen);
ans3.setOnTouchListener(listen);
ans4.setOnTouchListener(listen);
ans5.setOnTouchListener(listen);
ans6.setOnTouchListener(listen);
ans7.setOnTouchListener(listen);
ans8.setOnTouchListener(listen);
soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
soundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
@Override
public void onLoadComplete(SoundPool soundPool, int sampleId,
int status) {
loaded = true;
}
});
soundID = soundPool.load(this, R.raw.correct, 1);
soundPool2 = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
soundPool2.setOnLoadCompleteListener(new OnLoadCompleteListener() {
@Override
public void onLoadComplete(SoundPool soundPool, int sampleId,
int status) {
loaded = true;
}
});
soundID2 = soundPool2.load(this, R.raw.error, 1);
}
OnTouchListener listen =(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent arg1) {
TextView button = (TextView) v;
DragShadow dragShadow = new DragShadow(v);
ClipData data = ClipData.newPlainText("", "");
v.startDrag(data, dragShadow, button, 0);
return false;
}
});
OnLongClickListener longlisten = new OnLongClickListener()
{
@Override
public boolean onLongClick(View v)
{
TextView button = (TextView) v;
DragShadow dragShadow = new DragShadow(v);
ClipData data = ClipData.newPlainText("", "");
v.startDrag(data, dragShadow, button, 0);
return false;
}
};
public void cont(View v)
{
TextView button = (TextView) v;
DragShadow dragShadow = new DragShadow(v);
ClipData data = ClipData.newPlainText("", "");
v.startDrag(data, dragShadow, button, 0);
}
private class DragShadow extends View.DragShadowBuilder
{
private ColorDrawable grey;
public DragShadow(View view) {
super(view);
grey = new ColorDrawable(Color.LTGRAY);
}
@Override
public void onDrawShadow(Canvas canvas) {
grey.draw(canvas);
}
@Override
public void onProvideShadowMetrics(Point shadowSize,Point shadowTouchPoint)
{
View v = getView();
int height =(int) v.getHeight();
int width = (int) v.getWidth();
grey.setBounds(0,0, width, height);
shadowSize.set(width, height);
shadowTouchPoint.set((int)width/2, (int)height/2);
}
};
OnDragListener dragListener = new OnDragListener()
{
@Override
public boolean onDrag(View v, DragEvent event)
{
int dragEvent = event.getAction();
TextView dropText = (TextView) v;
switch(dragEvent)
{
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DROP:
TextView draggedText = (TextView)event.getLocalState();
Ans = (String) (draggedText.getText());
dropText.setText(draggedText.getText());
if ( Ans.equals("16"))
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q1=1;
}
else
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool2.play(soundID2, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q1=0;
}
break;
}
return true;
}
};
OnDragListener dragListener2 = new OnDragListener()
{
@Override
public boolean onDrag(View v, DragEvent event)
{
int dragEvent = event.getAction();
TextView dropText = (TextView) v;
switch(dragEvent)
{
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DROP:
TextView draggedText = (TextView)event.getLocalState();
Ans = (String) (draggedText.getText());
dropText.setText(draggedText.getText());
if ( Ans.equals("24"))
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q2=1;
}
else
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool2.play(soundID2, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q2=2;
}
break;
}
return true;
}
};
OnDragListener dragListener3 = new OnDragListener()
{
@Override
public boolean onDrag(View v, DragEvent event)
{
int dragEvent = event.getAction();
TextView dropText = (TextView) v;
switch(dragEvent)
{
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DROP:
TextView draggedText = (TextView)event.getLocalState();
Ans = (String) (draggedText.getText());
dropText.setText(draggedText.getText());
if ( Ans.equals("32"))
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q3=1;
}
else
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool2.play(soundID2, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q3=0;
}
break;
}
return true;
}
};
OnDragListener dragListener4 = new OnDragListener()
{
@Override
public boolean onDrag(View v, DragEvent event)
{
int dragEvent = event.getAction();
TextView dropText = (TextView) v;
switch(dragEvent)
{
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DROP:
TextView draggedText = (TextView)event.getLocalState();
Ans = (String) (draggedText.getText());
dropText.setText(draggedText.getText());
if ( Ans.equals("40"))
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q4=1;
}
else
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool2.play(soundID2, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q4=0;
}
break;
}
return true;
}
};
OnDragListener dragListener5 = new OnDragListener()
{
@Override
public boolean onDrag(View v, DragEvent event)
{
int dragEvent = event.getAction();
TextView dropText = (TextView) v;
switch(dragEvent)
{
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DROP:
TextView draggedText = (TextView)event.getLocalState();
Ans = (String) (draggedText.getText());
dropText.setText(draggedText.getText());
if ( Ans.equals("48"))
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool.play(soundID, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q5=1;
}
else
{
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
soundPool2.play(soundID2, volume, volume, 1, 0, 1f);
Log.e("Test", "Played sound");
q5=0;
}
break;
}
return true;
}
};
}
答案 0 :(得分：1)
尝试以下代码： -
if (end==5)
见以下链接： -
http://docs.oracle.com/javase/tutorial/java/nutsandbolts/operators.html
Simple Assignment Operator
= Simple assignment operator
Arithmetic Operators
+ Additive operator (also used
for String concatenation)
- Subtraction operator
* Multiplication operator
/ Division operator
% Remainder operator
Unary Operators
+ Unary plus operator; indicates
positive value (numbers are
positive without this, however)
- Unary minus operator; negates
an expression
++ Increment operator; increments
a value by 1
-- Decrement operator; decrements
a value by 1
! Logical complement operator;
inverts the value of a boolean
Equality and Relational Operators
== Equal to
!= Not equal to
> Greater than
>= Greater than or equal to
< Less than
<= Less than or equal to
Conditional Operators
&& Conditional-AND
|| Conditional-OR
?: Ternary (shorthand for
if-then-else statement)
Type Comparison Operator
instanceof Compares an object to
a specified type
Bitwise and Bit Shift Operators
~ Unary bitwise complement
<< Signed left shift
>> Signed right shift
>>> Unsigned right shift
& Bitwise AND
^ Bitwise exclusive OR
| Bitwise inclusive OR
答案 1 :(得分：0)
if (end=5)
应该是
if (end==5)
如果您想比较==
int
答案 2 :(得分：0)
如果你想检查结束等于5则不应该是
if(end==5)
{
}
答案 3 :(得分：0)
If语句应该在任何函数或方法中......你不能将if语句直接写入你的类....
您的if声明不包含任何正文......
因此，将其带入解决syntex错误的任何函数或方法。
答案 4 :(得分：-1)
您应该尝试使用此代码。我有类似的问题，这解决了它：
if(end.equals(5)){
//Your code
}