从滑动屏幕底部的布局了 [英] Slide a layout up from bottom of screen

问题描述

我有一个布局隐藏的看法。按钮上单击我希望它从底部推动整个屏幕内容向上，非常相似，向上滑动如何WhatsApp的表情显示面板聊天屏幕。

I have a layout hidden from the view. On a button click I want it to slide up from the bottom pushing the entire screen contents upwards, very similar to how whatsapp shows emoticons panel in chat screen.

我见过SlidingDrawer，对我说，忽略了最低的工作。它需要的影像，它显示在屏幕中央的把手，我不希望出现这种情况。它还滑过现有屏幕的内容，我在寻找一种方式来向上移动现有的内容。

I have seen SlidingDrawer, that dosen't work for me. It requires an image as an handle which is shown at the center of the screen, I don't want that. It also slides over the existing screen content, I am looking for a way to move the existing content upwards.

更新1：

我试着用动画所建议的SANKET Kachhela。但隐藏的布局从未显示。这里是code。

I tried using the animations as suggested by Sanket Kachhela. But the hidden layout is never shown. Here is the code.

布局（activity_main.xml）：

<RelativeLayout
    android:id="@+id/main_screen"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" 
        android:layout_alignParentTop="true"/>

     <TextView
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="@string/hello_world" 
       android:layout_centerInParent="true"/>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Slide up / down"
        android:layout_alignParentBottom="true" 
        android:onClick="slideUpDown"/>

</RelativeLayout>

<RelativeLayout
    android:id="@+id/hidden_panel"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 
    android:layout_below="@id/main_screen">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/app_name" />

</RelativeLayout>

活动（MainActivity.java）：

package com.example.slideuplayout;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;

public class MainActivity extends Activity {

private ViewGroup hiddenPanel;
private boolean isPanelShown;

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

    hiddenPanel = (ViewGroup)findViewById(R.id.hidden_panel);
    hiddenPanel.setVisibility(View.INVISIBLE);
    isPanelShown = false;
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

public void slideUpDown(final View view) {
    if(!isPanelShown) {
        // Show the panel
        Animation bottomUp = AnimationUtils.loadAnimation(this,
                R.anim.bottom_up);

        hiddenPanel.startAnimation(bottomUp);
        hiddenPanel.setVisibility(View.VISIBLE);
        isPanelShown = true;
    }
    else {
        // Hide the Panel
        Animation bottomDown = AnimationUtils.loadAnimation(this,
                R.anim.bottom_down);

        hiddenPanel.startAnimation(bottomDown);
        hiddenPanel.setVisibility(View.INVISIBLE);
        isPanelShown = false;
    }
}

}

动画：

bottom_up.xml：

bottom_up.xml:

<?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate 
       android:fromYDelta="75%p"
       android:toYDelta="0%p"
       android:fillAfter="true"
       android:duration="500" />
</set>

bottom_down.xml：

bottom_down.xml:

<?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android">
<translate 
    android:fromYDelta="0%p" 
    android:toYDelta="100%p" 
    android:fillAfter="true"
    android:interpolator="@android:anim/linear_interpolator"
    android:duration="500" />
</set>

任何想法如何可以做到这一点？

Any ideas how this can be done ?

感谢。

推荐答案

下面到底是什么工作适合我。

Here is what worked in the end for me.

布局：

activity_main.xml     

activity_main.xml

<RelativeLayout
    android:id="@+id/main_screen"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:layout_alignParentTop="true"
    android:layout_alignParentBottom="true">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" 
        android:layout_alignParentTop="true"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world"
        android:layout_centerInParent="true" />

    <Button
        android:id="@+id/slideButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Slide up / down"
        android:layout_alignParentBottom="true" 
        android:onClick="slideUpDown"/>

</RelativeLayout>

hidden_​​panel.xml

hidden_panel.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/hidden_panel"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >
    <Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Test" />
</LinearLayout>

Java的：     包com.example.slideuplayout;

Java: package com.example.slideuplayout;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;

public class MainActivity extends Activity {

private ViewGroup hiddenPanel;
private ViewGroup mainScreen;
private boolean isPanelShown;
private ViewGroup root;

int screenHeight = 0;

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

    mainScreen = (ViewGroup)findViewById(R.id.main_screen);
    ViewTreeObserver vto = mainScreen.getViewTreeObserver(); 
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
        @Override 
        public void onGlobalLayout() { 
            screenHeight = mainScreen.getHeight();
            mainScreen.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
        } 
    }); 

    root = (ViewGroup)findViewById(R.id.root);

    hiddenPanel = (ViewGroup)getLayoutInflater().inflate(R.layout.hidden_panel, root, false);
    hiddenPanel.setVisibility(View.INVISIBLE);

    root.addView(hiddenPanel);

    isPanelShown = false;
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

public void slideUpDown(final View view) {
    if(!isPanelShown) {
        // Show the panel
        mainScreen.layout(mainScreen.getLeft(),
                          mainScreen.getTop() - (screenHeight * 25/100), 
                          mainScreen.getRight(),
                          mainScreen.getBottom() - (screenHeight * 25/100));



        hiddenPanel.layout(mainScreen.getLeft(), mainScreen.getBottom(), mainScreen.getRight(), screenHeight);
        hiddenPanel.setVisibility(View.VISIBLE);

        Animation bottomUp = AnimationUtils.loadAnimation(this,
                R.anim.bottom_up);

        hiddenPanel.startAnimation(bottomUp);

        isPanelShown = true;
    }
    else {
        isPanelShown = false;

        // Hide the Panel
        Animation bottomDown = AnimationUtils.loadAnimation(this,
                R.anim.bottom_down);
        bottomDown.setAnimationListener(new AnimationListener() {

            @Override
            public void onAnimationStart(Animation arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationRepeat(Animation arg0) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onAnimationEnd(Animation arg0) {
                isPanelShown = false;

                mainScreen.layout(mainScreen.getLeft(),
                          mainScreen.getTop() + (screenHeight * 25/100), 
                          mainScreen.getRight(),
                          mainScreen.getBottom() + (screenHeight * 25/100));

                hiddenPanel.layout(mainScreen.getLeft(), mainScreen.getBottom(), mainScreen.getRight(), screenHeight);
            }
        });
        hiddenPanel.startAnimation(bottomDown);
    }
}
}

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