Kolay bir yol resmi market uygulaması görüldüğü gibi genişletilebilir/katlanabilir blok oluşturmak için var mı?

Sen "Daha fazla" düğmesi, açıklama bölümüne animasyon ile genişletiyor: . tıkladığın zaman Market uygulaması, ekran görüntüsü

SlidingDrawer ama işler için uygun görünmüyor kaplaması koymak olmalı böyle biliyorum, ve yarı açık states desteklemiyor.

Güncelleme:

Burada yarım kalan iş çözümü. LinearLayout uzanan özel bir widget. -Biraz çalışır, ama kenar durumlarda sindiremediğini, içerik yükseklik collapsedHeight parametre daha küçük gibi. Yeterince bakıp, kod kazma ve tuhaf deneyler sabit olabilir eminim. Bunu önlemek için umut oldu, ve hazır resmi ya da 3. parti bir çözüm kullanarak biraz zaman ayır. Her neyse, burada, kodu:

package com.example.androidapp.widgets;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.widget.LinearLayout;

import com.example.androidapp.R;

public class ExpandablePanel extends LinearLayout {

    private final int mHandleId;
    private final int mContentId;

    private View mHandle;
    private View mContent;

    private boolean mExpanded = true;
    private int mCollapsedHeight = 0;
    private int mContentHeight = 0;

    public ExpandablePanel(Context context) {
        this(context, null);
    }

    public ExpandablePanel(Context context, AttributeSet attrs) {
        super(context, attrs);

        TypedArray a = context.obtainStyledAttributes(attrs,
            R.styleable.ExpandablePanel, 0, 0);

        // How high the content should be in "collapsed" state
        mCollapsedHeight = (int) a.getDimension(
            R.styleable.ExpandablePanel_collapsedHeight, 0.0f);

        int handleId = a.getResourceId(R.styleable.ExpandablePanel_handle, 0);
        if (handleId == 0) {
            throw new IllegalArgumentException(
                "The handle attribute is required and must refer "
                      "to a valid child.");
        }

        int contentId = a.getResourceId(R.styleable.ExpandablePanel_content, 0);
        if (contentId == 0) {
            throw new IllegalArgumentException(
                "The content attribute is required and must refer "
                      "to a valid child.");
        }

        mHandleId = handleId;
        mContentId = contentId;

        a.recycle();
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        mHandle = findViewById(mHandleId);
        if (mHandle == null) {
            throw new IllegalArgumentException(
                "The handle attribute is must refer to an"
                      " existing child.");
        }

        mContent = findViewById(mContentId);
        if (mContent == null) {
            throw new IllegalArgumentException(
                "The content attribute is must refer to an"
                      " existing child.");
        }

        mHandle.setOnClickListener(new PanelToggler());
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (mContentHeight == 0) {
            // First, measure how high content wants to be
            mContent.measure(widthMeasureSpec, MeasureSpec.UNSPECIFIED);
            mContentHeight = mContent.getMeasuredHeight();
        }

        // Then let the usual thing happen
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    private class PanelToggler implements OnClickListener {
        public void onClick(View v) {
            Animation a;
            if (mExpanded) {
                a = new ExpandAnimation(mContentHeight, mCollapsedHeight);
            } else {
                a = new ExpandAnimation(mCollapsedHeight, mContentHeight);
            }
            a.setDuration(500);
            mContent.startAnimation(a);
            mExpanded = !mExpanded;
        }
    }

    private class ExpandAnimation extends Animation {
        private final int mStartHeight;
        private final int mDeltaHeight;

        public ExpandAnimation(int startHeight, int endHeight) {
            mStartHeight = startHeight;
            mDeltaHeight = endHeight - startHeight;
        }

        @Override
        protected void applyTransformation(float interpolatedTime,
            Transformation t) {
            android.view.ViewGroup.LayoutParams lp = mContent.getLayoutParams();
            lp.height = (int) (mStartHeight   mDeltaHeight * interpolatedTime);
            mContent.setLayoutParams(lp);
        }

        @Override
        public boolean willChangeBounds() {
            // TODO Auto-generated method stub
            return true;
        }
    }
}

Burada res/values/attrs.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <declare-styleable name="ExpandablePanel">
    <attr name="handle" format="reference" />
    <attr name="content" format="reference" />
    <attr name="collapsedHeight" format="dimension" />
  </declare-styleable>
</resources>

Ve burada düzen nasıl kullanabilirim

<com.example.androidapp.widgets.ExpandablePanel
    android:orientation="vertical"
    android:layout_height="wrap_content"
    android:layout_width="fill_parent"
    example:handle="@ id/expand"
    example:content="@ id/value"
    example:collapsedHeight="50dip">
    <TextView
        android:id="@id/value"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:maxHeight="50dip"
        />
    <Button
        android:id="@id/expand"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="More" />
</com.example.androidapp.widgets.ExpandablePanel>

Çok teşekkürler OP! İlgilenenler için OP çözüm aldım ve biraz rafine edilmiş.

• Eğer taşma varsa sadece görüntüler kolu
• Üzerinden animasyon süresini belirleme yeteneği 'animationDuration' özniteliği eklendi
• Kovulmak bu olay dinleyicileri eklemek için yeteneği eklendi onExpand ve onCollapse (bu e için yararlıdır.g metin değiştirme """". daha Az düğme Daha
• Varsayılan olarak çöktü
• İçerik olarak öznitelikleri ile aynı) değiştirilebilir

İşte güncelleştirilmiş kod:

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.widget.LinearLayout;

public class ExpandablePanel extends LinearLayout {

    private final int mHandleId;
    private final int mContentId;

    private View mHandle;
    private View mContent;

    private boolean mExpanded = false;
    private int mCollapsedHeight = 0;
    private int mContentHeight = 0;
    private int mAnimationDuration = 0;

    private OnExpandListener mListener;

    public ExpandablePanel(Context context) {
        this(context, null);
    }

    public ExpandablePanel(Context context, AttributeSet attrs) {
        super(context, attrs);
        mListener = new DefaultOnExpandListener();

        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ExpandablePanel, 0, 0);

        // How high the content should be in "collapsed" state
        mCollapsedHeight = (int) a.getDimension(R.styleable.ExpandablePanel_collapsedHeight, 0.0f);

        // How long the animation should take
        mAnimationDuration = a.getInteger(R.styleable.ExpandablePanel_animationDuration, 500);

        int handleId = a.getResourceId(R.styleable.ExpandablePanel_handle, 0);
        if (handleId == 0) {
            throw new IllegalArgumentException(
                "The handle attribute is required and must refer "
                      "to a valid child.");
        }

        int contentId = a.getResourceId(R.styleable.ExpandablePanel_content, 0);
        if (contentId == 0) {
            throw new IllegalArgumentException("The content attribute is required and must refer to a valid child.");
        }

        mHandleId = handleId;
        mContentId = contentId;

        a.recycle();
    }

    public void setOnExpandListener(OnExpandListener listener) {
        mListener = listener; 
    }

    public void setCollapsedHeight(int collapsedHeight) {
        mCollapsedHeight = collapsedHeight;
    }

    public void setAnimationDuration(int animationDuration) {
        mAnimationDuration = animationDuration;
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        mHandle = findViewById(mHandleId);
        if (mHandle == null) {
            throw new IllegalArgumentException(
                "The handle attribute is must refer to an"
                      " existing child.");
        }

        mContent = findViewById(mContentId);
        if (mContent == null) {
            throw new IllegalArgumentException(
                "The content attribute must refer to an"
                      " existing child.");
        }

        android.view.ViewGroup.LayoutParams lp = mContent.getLayoutParams();
        lp.height = mCollapsedHeight;
        mContent.setLayoutParams(lp);

        mHandle.setOnClickListener(new PanelToggler());
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        // First, measure how high content wants to be
        mContent.measure(widthMeasureSpec, MeasureSpec.UNSPECIFIED);
        mContentHeight = mContent.getMeasuredHeight();

        if (mContentHeight < mCollapsedHeight) {
            mHandle.setVisibility(View.GONE);
        } else {
            mHandle.setVisibility(View.VISIBLE);
        }

        // Then let the usual thing happen
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    private class PanelToggler implements OnClickListener {
        public void onClick(View v) {
            Animation a;
            if (mExpanded) {
                a = new ExpandAnimation(mContentHeight, mCollapsedHeight);
                mListener.onCollapse(mHandle, mContent);
            } else {
                a = new ExpandAnimation(mCollapsedHeight, mContentHeight);
                mListener.onExpand(mHandle, mContent);
            }
            a.setDuration(mAnimationDuration);
            mContent.startAnimation(a);
            mExpanded = !mExpanded;
        }
    }

    private class ExpandAnimation extends Animation {
        private final int mStartHeight;
        private final int mDeltaHeight;

        public ExpandAnimation(int startHeight, int endHeight) {
            mStartHeight = startHeight;
            mDeltaHeight = endHeight - startHeight;
        }

        @Override
        protected void applyTransformation(float interpolatedTime, Transformation t) {
            android.view.ViewGroup.LayoutParams lp = mContent.getLayoutParams();
            lp.height = (int) (mStartHeight   mDeltaHeight * interpolatedTime);
            mContent.setLayoutParams(lp);
        }

        @Override
        public boolean willChangeBounds() {
            return true;
        }
    }

    public interface OnExpandListener {
        public void onExpand(View handle, View content); 
        public void onCollapse(View handle, View content);
    }

    private class DefaultOnExpandListener implements OnExpandListener {
        public void onCollapse(View handle, View content) {}
        public void onExpand(View handle, View content) {}
    }
}

Ve attrs.xml unutma:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="ExpandablePanel">
        <attr name="handle" format="reference" />
        <attr name="content" format="reference" />
        <attr name="collapsedHeight" format="dimension"/>
        <attr name="animationDuration" format="integer"/>
    </declare-styleable>
</resources>

XML düzeni için OP örnek kullanım yukarıya bakın. İşte dinleyiciler için bir örnek:

// Set expandable panel listener
ExpandablePanel panel = (ExpandablePanel)view.findViewById(R.id.foo);
panel.setOnExpandListener(new ExpandablePanel.OnExpandListener() {
    public void onCollapse(View handle, View content) {
        Button btn = (Button)handle;
        btn.setText("More");
    }
    public void onExpand(View handle, View content) {
        Button btn = (Button)handle;
        btn.setText("Less");
    }
});