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我是一名Android應用開發班的高中生。我正在爲我的應用程序使用按鈕進行下一個活動的導入滑塊。我不幸得到錯誤無法解析符號'OnClickListener'。我確信這是全部寫在OnCreate（）下;方法幷包含OnClickListener（）的import語句;但它仍然無法解析符號。還有其他重要聲明還是這個錯誤？下面你會發現我的代碼。無法解析OnClickListener
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.text.Layout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.view.View.OnClickListener;
public class SecondActivity extends AppCompatActivity {
private ViewPagerAdapter viewPagerAdapter;
private ViewPager viewPager;
private IntroManager introManager;
private TextView [] dots;
private LinearLayout dotsLayout;
private int[] layouts;
Button next,skip;
View view;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
introManager = new IntroManager(this);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.second_activity);
if(!introManager.Check())
{
introManager.setFirst(false);
Intent intent = new Intent(SecondActivity.this,ThirdActivity.class);
startActivity(intent);
finish();
}
layouts= new int[]{R.layout.second_activity,R.layout.third_activity,R.layout.fourth_activity,R.layout.fifth_activity};
if(Build.VERSION.SDK_INT>=21){
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE|View.SYSTEM_UI_FLAG_FULLSCREEN);
}
viewPager = (ViewPager) findViewById(R.id.view_pager);
dotsLayout= (LinearLayout) findViewById(R.id.layoutdots);
skip = (Button) findViewById(R.id.btn_skip);
next = (Button) findViewById(R.id.btn_next);
addBottomDots(0);
viewPagerAdapter= new ViewPagerAdapter();
viewPager.setAdapter(viewPagerAdapter);
viewPager.addOnPageChangeListener(viewListener);
skip.setOnClickListener(new view.OnClickListener(){
@Override
public void onClick(View view){
Intent intent = new Intent(SecondActivity.this,FifthActivity.class);
startActivity(intent);
finish();
}
});
next.setOnClickListener(new view.OnClickListener(){
@Override
public void onClick(View view){
int current = getItem(+1);
if(current<layouts.length){
viewPager.setCurrentItem(current);
}
else
{
Intent intent = new Intent(SecondActivity.this,ThirdActivity.class);
startActivity(intent);
finish();
}
}
});
}
private void addBottomDots(int position){
dots = new TextView[layouts.length];
int [] colorActive = getResources().getIntArray(R.array.dot_active);
int [] colorInactive = getResources().getIntArray(R.array.dot_inactive);
dotsLayout.removeAllViews();
for (int i = 0; i<dots.length; i++){
dots[i]= new TextView(this);
dots[i].setText(Html.fromHtml("&@8226;"));
dots[i].setTextSize(35);
dots[i].setTextColor(colorInactive[position]);
dotsLayout.addView(dots[i]);
}
if(dots[position].length()>0){
dots[position].setTextColor(colorActive[position]);
}
}
private int getItem(int i){
return viewPager.getCurrentItem() + 1;
}
ViewPager.OnPageChangeListener viewListener = new ViewPager.OnPageChangeListener(){
@Override
public void onPageScrolled(int position, float positionOffeet, int positionOffeetPixels){
}
@Override
public void onPageSelected(int position)
{
addBottomDots(position);
if (position==layouts.length-1){
next.setText("PROCEED");
skip.setVisibility(View.GONE);
}else{
next.setText("NEXT");
skip.setVisibility(View.VISIBLE);
}
}
@Override
public void onPageScrollStateChanged(int state)
{}
}
;
public void changetatusColor(){
if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.LOLLIPOP){
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.setStatusBarColor(Color.TRANSPARENT);
}
}
public class ViewPagerAdapter extends PagerAdapter {
private LayoutInflater layoutInflater;
@Override
public Object instantiateItem(ViewGroup container, int position){
layoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = LayoutInflater.inflate(layouts[position],container,false);
container.addView(v);
return v;
}
@Override
public int getCount(){
return 0;
}
@Override
public boolean isViewFromObject(View view,Object object){
return view==object;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object){
View v = (View) object;
container.removeView(v);
}
}
}