使用app時會出現前導說明頁
整體流程如下圖
首先要修改先前
開機畫面SplashScreen.java檔啟動位置
1.
SplashScreen.java
Intent i = new Intent(SplashScreen.this, Leading.class); //啟動完開機畫面SplashScreen.java後跳轉Leading.java
2.加入Leading.java在
AndroidManifest.xml
3.建立leading.xml，lay1.xml，lay2.xml，lay3.xml
leading.xml 下方的圓點
lay1.xml 說明頁的第一張圖pic1
lay2.xml 說明頁的第二張圖pic2
lay3.xml 說明頁的第三張圖pic3+開始體驗Button
4.
Leading.java 說明頁面程式碼
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
public class Leading extends Activity {
private ViewPager myViewPager; // 頁卡內容
private List list; // 存放頁卡
private TextView dot1, dot2, dot3; // 這些點都是文字
private Button startButton; // 按鈕，開始體驗
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.leading);
initDot();
initViewPager();
}
private void initDot() {
dot1 = (TextView) this.findViewById(R.id.textView1); // 這些點都是文字
dot2 = (TextView) this.findViewById(R.id.textView2);
dot3 = (TextView) this.findViewById(R.id.textView3);
}
private void initViewPager() {
myViewPager = (ViewPager) this.findViewById(R.id.viewPager);
list = new ArrayList();
LayoutInflater inflater = getLayoutInflater();
View view = inflater.inflate(R.layout.lay3, null); // 只是為了等下findviewbuid而獨立拿出來賦給view
list.add(inflater.inflate(R.layout.lay1, null));
list.add(inflater.inflate(R.layout.lay2, null));
list.add(view);
try {
myViewPager.setAdapter(new MyPagerAdapter(list));
myViewPager.setOnPageChangeListener(new MyPagerChangeListener());
} catch (NullPointerException e) {
}
startButton = (Button) view.findViewById(R.id.start); // 與上面對應，獲取這個按鈕
startButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Leading.this, MainActivity.class); //按下按鈕後跳轉至MainActivity.java
startActivity(intent);
}
});
}
class MyPagerAdapter extends PagerAdapter {
public List mListViews;
public MyPagerAdapter(List mListViews) {
this.mListViews = mListViews;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView(mListViews.get(arg1));
}
@Override
public void finishUpdate(View arg0) {
}
@Override
public int getCount() {
return mListViews.size();
}
@Override
public Object instantiateItem(View arg0, int arg1) {
((ViewPager) arg0).addView(mListViews.get(arg1), 0);
return mListViews.get(arg1);
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == (arg1);
}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate(View arg0) {
}
}
class MyPagerChangeListener implements OnPageChangeListener {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
switch (arg0) { // 設置點的顏色
case 0:
dot1.setTextColor(Color.WHITE);
dot2.setTextColor(Color.BLACK);
dot3.setTextColor(Color.BLACK);
break;
case 1:
dot1.setTextColor(Color.BLACK);
dot2.setTextColor(Color.WHITE);
dot3.setTextColor(Color.BLACK);
break;
case 2:
dot1.setTextColor(Color.BLACK);
dot2.setTextColor(Color.BLACK);
dot3.setTextColor(Color.WHITE);
break;
}
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
}
}
參考來源:
http://blog.segmentfault.com/zhongbaitu/1190000000398209
