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添加ViewPager的循环滚动以及利用clipToPadding属性解决触及屏幕边缘时不能滑动问题 #8

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merged 1 commit into from
Aug 13, 2017
Merged

添加ViewPager的循环滚动以及利用clipToPadding属性解决触及屏幕边缘时不能滑动问题 #8

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3 changes: 3 additions & 0 deletions app/src/main/AndroidManifest.xml
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Expand Up @@ -16,6 +16,9 @@
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

<activity android:name=".CircleViewPagerActivity"/>
<activity android:name=".StandardViewPagerActivity"/>
</application>

</manifest>
169 changes: 169 additions & 0 deletions app/src/main/java/com/zhy/magicviewpager/sample/CircleViewPagerActivity.java
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@@ -0,0 +1,169 @@
package com.zhy.magicviewpager.sample;

import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.Toast;

import com.zhy.magicviewpager.transformer.AlphaPageTransformer;
import com.zhy.magicviewpager.transformer.NonPageTransformer;
import com.zhy.magicviewpager.transformer.RotateDownPageTransformer;
import com.zhy.magicviewpager.transformer.RotateUpPageTransformer;
import com.zhy.magicviewpager.transformer.RotateYTransformer;
import com.zhy.magicviewpager.transformer.ScaleInTransformer;

public class CircleViewPagerActivity extends AppCompatActivity{

private ViewPager mViewPager;
private PagerAdapter mAdapter;

int[] imgRes = {R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d,
R.drawable.e, R.drawable.f, R.drawable.g, R.drawable.h, R.drawable.i};

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_circle_viewpager);

mViewPager = (ViewPager) findViewById(R.id.id_viewpager);

mViewPager.setPageMargin(40);
mViewPager.setAdapter(mAdapter = new PagerAdapter()
{
@Override
public Object instantiateItem(ViewGroup container, int position)
{
ImageView view = new ImageView(CircleViewPagerActivity.this);
// ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
// view.setLayoutParams(lp);
// view.setText(position + ":" + view);
view.setScaleType(ImageView.ScaleType.FIT_XY);
// view.setBackgroundColor(Color.parseColor("#44ff0000"));
final int realPosition = getRealPosition(position);
view.setImageResource(imgRes[realPosition]);
container.addView(view);
// view.setAdjustViewBounds(true);

view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(CircleViewPagerActivity.this, "click position= " + realPosition, Toast.LENGTH_SHORT).show();
}
});
return view;
}


@Override
public int getItemPosition(Object object) {
return POSITION_NONE;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object)
{
container.removeView((View) object);
}

@Override
public int getCount()
{
return Integer.MAX_VALUE;
}

@Override
public boolean isViewFromObject(View view, Object o)
{
return view == o;
}

@Override
public void startUpdate(ViewGroup container) {
super.startUpdate(container);
ViewPager viewPager = (ViewPager) container;
int position = viewPager.getCurrentItem();
if (position == 0) {
position = getFirstItemPosition();
} else if (position == getCount() - 1) {
position = getLastItemPosition();
}
viewPager.setCurrentItem(position, false);

}

private int getRealCount() {
return imgRes.length;
}

private int getRealPosition(int position) {
return position % getRealCount();
}

private int getFirstItemPosition() {
return Integer.MAX_VALUE / getRealCount() / 2 * getRealCount();
}

private int getLastItemPosition() {
return Integer.MAX_VALUE / getRealCount() / 2 * getRealCount() - 1;
}
});

mViewPager.setPageTransformer(true, new AlphaPageTransformer());

}

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
String[] effects = this.getResources().getStringArray(R.array.magic_effect);
for (String effect : effects)
menu.add(effect);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
String title = item.getTitle().toString();
mViewPager.setAdapter(mAdapter);

if ("RotateDown".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer());
} else if ("RotateUp".equals(title))
{
mViewPager.setPageTransformer(true, new RotateUpPageTransformer());
} else if ("RotateY".equals(title))
{
mViewPager.setPageTransformer(true, new RotateYTransformer(45));
} else if ("Standard".equals(title))
{
// mViewPager.setClipChildren(false);
mViewPager.setPageTransformer(true, NonPageTransformer.INSTANCE);
} else if ("Alpha".equals(title))
{
// mViewPager.setClipChildren(false);
mViewPager.setPageTransformer(true, new AlphaPageTransformer());
} else if ("ScaleIn".equals(title))
{
mViewPager.setPageTransformer(true, new ScaleInTransformer());
} else if ("RotateDown and Alpha".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer(new AlphaPageTransformer()));
}else if ("RotateDown and Alpha And ScaleIn".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer(new AlphaPageTransformer(new ScaleInTransformer())));
}

setTitle(title);

return true;
}
}
119 changes: 10 additions & 109 deletions app/src/main/java/com/zhy/magicviewpager/sample/MainActivity.java
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package com.zhy.magicviewpager.sample;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import com.zhy.magicviewpager.transformer.AlphaPageTransformer;
import com.zhy.magicviewpager.transformer.NonPageTransformer;
import com.zhy.magicviewpager.transformer.RotateDownPageTransformer;
import com.zhy.magicviewpager.transformer.RotateUpPageTransformer;
import com.zhy.magicviewpager.transformer.RotateYTransformer;
import com.zhy.magicviewpager.transformer.ScaleInTransformer;

public class MainActivity extends AppCompatActivity
{

private ViewPager mViewPager;
private PagerAdapter mAdapter;

int[] imgRes = {R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d,
R.drawable.e, R.drawable.f, R.drawable.g, R.drawable.h, R.drawable.i};
public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState)
{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

mViewPager = (ViewPager) findViewById(R.id.id_viewpager);

mViewPager.setPageMargin(40);
mViewPager.setOffscreenPageLimit(3);
mViewPager.setAdapter(mAdapter = new PagerAdapter()
{
@Override
public Object instantiateItem(ViewGroup container, int position)
{
ImageView view = new ImageView(MainActivity.this);
// ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
// view.setLayoutParams(lp);
// view.setText(position + ":" + view);
view.setScaleType(ImageView.ScaleType.FIT_XY);
// view.setBackgroundColor(Color.parseColor("#44ff0000"));
view.setImageResource(imgRes[position]);
container.addView(view);
// view.setAdjustViewBounds(true);
return view;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object)
{
container.removeView((View) object);
}

@Override
public int getCount()
{
return imgRes.length;
}

@Override
public boolean isViewFromObject(View view, Object o)
{
return view == o;
}
});
mViewPager.setPageTransformer(true, new AlphaPageTransformer());

}

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
String[] effects = this.getResources().getStringArray(R.array.magic_effect);
for (String effect : effects)
menu.add(effect);
return true;
public void onStandardViewPager(View view) {
Intent intent = new Intent(MainActivity.this, StandardViewPagerActivity.class);
startActivity(intent);
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
String title = item.getTitle().toString();
mViewPager.setAdapter(mAdapter);

if ("RotateDown".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer());
} else if ("RotateUp".equals(title))
{
mViewPager.setPageTransformer(true, new RotateUpPageTransformer());
} else if ("RotateY".equals(title))
{
mViewPager.setPageTransformer(true, new RotateYTransformer(45));
} else if ("Standard".equals(title))
{
// mViewPager.setClipChildren(false);
mViewPager.setPageTransformer(true, NonPageTransformer.INSTANCE);
} else if ("Alpha".equals(title))
{
// mViewPager.setClipChildren(false);
mViewPager.setPageTransformer(true, new AlphaPageTransformer());
} else if ("ScaleIn".equals(title))
{
mViewPager.setPageTransformer(true, new ScaleInTransformer());
} else if ("RotateDown and Alpha".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer(new AlphaPageTransformer()));
}else if ("RotateDown and Alpha And ScaleIn".equals(title))
{
mViewPager.setPageTransformer(true, new RotateDownPageTransformer(new AlphaPageTransformer(new ScaleInTransformer())));
}

setTitle(title);

return true;
public void onCircleViewPager(View view) {
Intent intent = new Intent(MainActivity.this, CircleViewPagerActivity.class);
startActivity(intent);
}

}
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