AndroidはWeChat 5をまねてスライドガイドを実現します。
本論文の例では、Androidの微信5スライドガイドの効果を共有します。参考にしてください。具体的な内容は以下の通りです。
View PageAdapter.java
View PageAdapter.java
package com.rong;
import java.util.ArrayList;
import java.util.List;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
public class ViewPagerAdapter extends PagerAdapter {
private List<View> views;
public ViewPagerAdapter(List<View> views) {
this.views = views;
}
@Override
public int getCount() {
return views.size();
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}
@Override
public void destroyItem(View container, int position, Object object) {
((ViewPager) container).removeView(views.get(position));
}
@Override
public Object instantiateItem(View container, int position) {
((ViewPager) container).addView(views.get(position));
return views.get(position);
}
/**
* View viewpager
*
* @param view
* @return
*/
public boolean insert(View view) {
if (this.views == null) {
this.views = new ArrayList<View>();
}
return this.views.add(view);
}
}
Home Acitivity.java
package com.rong;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import com.rong.wechat5.R;
public class HomeActivity extends Activity {
private View home_line;
private int screenWidth1_3;
private ViewPager home_vp;
private ViewPagerAdapter viewPagerAdapter;
private List<View> views = new ArrayList<View>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_home);
initView();
}
private void initView() {
Display display = getWindow().getWindowManager().getDefaultDisplay();
DisplayMetrics dm = new DisplayMetrics();
display.getMetrics(dm);
home_line = (View) findViewById(R.id.home_line);
home_vp = (ViewPager) findViewById(R.id.home_vp);
LayoutParams lp = home_line.getLayoutParams();
screenWidth1_3 = dm.widthPixels / 3;
lp.width = screenWidth1_3;
lp.height = 5;
home_line.setLayoutParams(lp);
View layout1 = View.inflate(this, R.layout.layout_view1, null);
View layout2 = View.inflate(this, R.layout.layout_view2, null);
View layout3 = View.inflate(this, R.layout.layout_view3, null);
views.add(layout1);
views.add(layout2);
views.add(layout3);
viewPagerAdapter = new ViewPagerAdapter(views);
home_vp.setAdapter(viewPagerAdapter);
home_vp.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
}
@Override
public void onPageScrolled(int position, float positionOffset,int positionOffsetPixels) {
Log.i("TAG", position+"=="+positionOffset+"=="+positionOffsetPixels);
LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) home_line.getLayoutParams();
lp.leftMargin = (int) (screenWidth1_3 * position + screenWidth1_3* positionOffset);
home_line.setLayoutParams(lp);
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
}
ラyout_ホット.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text=" "
android:textColor="#000000"
android:textSize="24sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text=" "
android:textColor="#000000"
android:textSize="24sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text=" "
android:textColor="#000000"
android:textSize="24sp" />
</RelativeLayout>
</LinearLayout>
<View
android:id="@+id/home_line"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#ff0000" />
<android.support.v4.view.ViewPager
android:id="@+id/home_vp"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
以上が本文の全部です。皆さんの勉強に役に立つように、私たちを応援してください。