给力的ActivityGroup+自定义弹性ListView+自定义弹性ScrollView+解决冲突问题

在这里我简单写了个DEMO,主要实现了在我们工作中可能会经常要遇到的一些问题,如,在你使用TABHOST的时候,你可能希望能够自由度更大一些,在这里我使用ActivityGroup来替代它,非常给力的,其实就是在工作中可能会遇到我们自定义的ListView与ScrollView一起使用的情况会发生冲突,在前编我把自定义具有弹性的ListView与自定义具有弹性的ScrollView都贴出来了,在这里为了更使其DEMO具有完整行,我就顺便也贴出来,直接仔细看看,希望能帮助给位在工作可能遇到相应的问题可以及时参考与解决,如果有问题,可留言,互相学习才有进步嘛:

直接上代码:

package org.android.view.group;

import org.android.view.R;

import android.app.ActivityGroup;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ImageView;

/**

*

* @author jiangshide

*

*/

public class ActivityGroupDemo extends ActivityGroup{

private ScrollDemo content = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_group);

findViewById();

}

private void findViewById(){

content = (ScrollDemo) findViewById(R.id.textView);

ImageView img1 = (ImageView) findViewById(R.id.img1);

img1.setOnClickListener(listener);

ImageView img2 = (ImageView) findViewById(R.id.img2);

img2.setOnClickListener(listener);

ImageView img3 = (ImageView) findViewById(R.id.img3);

img3.setOnClickListener(listener);

ImageView img4 = (ImageView) findViewById(R.id.img4);

img4.setOnClickListener(listener);

}

private OnClickListener listener = new OnClickListener() {

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.img1:

content.removeAllViews();

content.addView(getLocalActivityManager().startActivity("home",new Intent(ActivityGroupDemo.this,HomeActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView());

break;

case R.id.img2:

content.removeAllViews();

content.addView(getLocalActivityManager().startActivity("destroy", new Intent(ActivityGroupDemo.this,DestoryActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView());

break;

case R.id.img3:

content.removeAllViews();

content.addView(getLocalActivityManager().startActivity("play",new Intent(ActivityGroupDemo.this,PlayActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView());

break;

case R.id.img4:

content.removeAllViews();

content.addView(getLocalActivityManager().startActivity("more",new Intent(ActivityGroupDemo.this,MoreActivity.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView());

break;

}

}

};

}

package org.android.view.group;

import org.android.view.R;

import android.app.Activity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

/**

*

* @author jiangshide

*

*/

public class HomeActivity extends Activity{

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.home);

findViewById();

}

private void findViewById(){

Button button = (Button) findViewById(R.id.button);

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

ProgressDialog.show(HomeActivity.this, "this is title!", "this is for content!").show();

}

});

}

}

package org.android.view.group;

import org.android.view.R;

import android.app.Activity;

import android.os.Bundle;

/**

*

* @author jiangshide

*

*/

public class DestoryActivity extends Activity{

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.destory);

}

}

package org.android.view.group;

import java.util.ArrayList;

import org.android.view.R;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ListAdapter;

import android.widget.ListView;

import android.widget.Toast;

说明下这里,这里是我写了一个ListView与ScrollView冲突解决的列子

/**

*

* @author jiangshide

*

*/

public class PlayActivity extends Activity{

private Button showButton;

private MyListView listView;

private ArrayList<Bean> arrayList;

private AdapterDemo adapterDemo;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.play);

findViewById();

}

private void findViewById(){

showButton = (Button) findViewById(R.id.play);

showButton.setOnClickListener(listener);

listView = (MyListView) findViewById(R.id.listView);

arrayList = new ArrayList<Bean>();

loadDatas();

adapterDemo = new AdapterDemo(PlayActivity.this, arrayList);

listView.setAdapter(adapterDemo);

setLisViewAndScroll(listView);

}

private void loadDatas(){

int[] img = {R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon,R.drawable.icon};

String[] bt = {"button1","button1","button1","button1","button1","button1","button1","button1","button1","button1","button1","button1"};

String[] tv = {"text1","text1","text1","text1","text1","text1","text1","text1","text1","text1","text1","text1","text1","text1"};

int is = img.length;

int bs = bt.length;

int ts = tv.length;

Bean b = new Bean();

for (int i = 0; i < is; i++) {

b.setImg(img[i]);

arrayList.add(b);

}

for (int i = 0; i < bs; i++) {

b.setShow(bt[i]);

arrayList.add(b);

}

for (int i = 0; i < ts; i++) {

b.setText(tv[i]);

arrayList.add(b);

}

}

private void setLisViewAndScroll(ListView listView){

ListAdapter listAdapter = listView.getAdapter();

if(listAdapter == null){

return;

}

int totalHeight = 0;

for (int i = 0, len = listAdapter.getCount(); i < len; i++) {

View listItem = listAdapter.getView(i, null, listView);

listItem.measure(0, 0);

totalHeight += listItem.getMeasuredHeight();

}

ViewGroup.LayoutParams params = listView.getLayoutParams();

params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

//listView.getDividerHeight()

//params.height

listView.setLayoutParams(params);

}

private OnClickListener listener = new OnClickListener() {

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.button:

Toast.makeText(PlayActivity.this, "show List!",1).show();

return;

}

}

};

}

package org.android.view.group;

/**

*

* @author jiangshide

*

*/

public class Bean {

private int img;

private String show;

private String text;

public int getImg() {

return img;

}

public void setImg(int img) {

this.img = img;

}

public String getShow() {

return show;

}

public void setShow(String show) {

this.show = show;

}

public String getText() {

return text;

}

public void setText(String text) {

this.text = text;

}

}

package org.android.view.group;

import android.content.Context;

import android.graphics.Rect;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.view.View;

import android.view.animation.TranslateAnimation;

import android.widget.ScrollView;

/**

*

* @author jiangshide

*

*/

public class ScrollDemo extends ScrollView{

private Context mContex;

private View view;

private float y;

private Rect rect = new Rect();

public ScrollDemo(Context c) {

super(c);

this.mContex = c;

}

public ScrollDemo(Context c,AttributeSet attr) {

super(c,attr);

this.mContex = c;

}

@Override

protected void onFinishInflate() {

if(getChildCount() > 0){

view = getChildAt(0);

}

}

@Override

public boolean onTouchEvent(MotionEvent ev){

if(view == null){

return super.onTouchEvent(ev);

}else{

commOnTouchEvent(ev);

}

return super.onTouchEvent(ev);

}

private void commOnTouchEvent(MotionEvent ev) {

int action = ev.getAction();

switch (action) {

case MotionEvent.ACTION_DOWN:

y = ev.getY();

break;

case MotionEvent.ACTION_UP:

if(isNeedAnimation()){

animation();

}

break;

case MotionEvent.ACTION_MOVE:

final float preY = y;

float nowY = ev.getY();

int deltaY = (int)(preY - nowY);

scrollBy(0, deltaY);

y = nowY;

if(isNeedMove()){

if(rect.isEmpty()){

rect.set(view.getLeft(),view.getTop(),view.getRight(),view.getBottom());

}

view.layout(view.getLeft(), view.getTop()-deltaY, view.getRight(), view.getBottom()-deltaY);

}

break;

}

}

private boolean isNeedMove() {

int offset = view.getMeasuredHeight() - getHeight();

int scrollY = getScrollY();

if(scrollY == 0 || scrollY == offset){

return true;

}

return false;

}

private void animation() {

TranslateAnimation ta = new TranslateAnimation(0,0,view.getTop(),rect.top);

ta.setDuration(200);

view.startAnimation(ta);

view.layout(rect.left, rect.top, rect.right, rect.bottom);

rect.setEmpty();

}

private boolean isNeedAnimation() {

return !rect.isEmpty();

}

}

package org.android.view.group;

import android.content.Context;

import android.graphics.Rect;

import android.util.AttributeSet;

import android.view.GestureDetector;

import android.view.GestureDetector.OnGestureListener;

import android.view.MotionEvent;

import android.view.View;

import android.view.animation.TranslateAnimation;

import android.widget.ListView;

/**

*

* @author jiangshide

*

*/

public class MyListView extends ListView{

private Context mContext;

private boolean outBound = false;

private int distance;

private int firstOut;

public MyListView(Context c) {

super(c);

this.mContext = c;

}

public MyListView(Context c,AttributeSet attr) {

super(c,attr);

this.mContext = c;

}

public MyListView(Context c,AttributeSet attrs,int delayStyle) {

super(c,attrs,delayStyle);

this.mContext = c;

}

private GestureDetector getstureDetector = new GestureDetector(new OnGestureListener() {

@Override

public boolean onSingleTapUp(MotionEvent e) {

return false;

}

@Override

public void onShowPress(MotionEvent e) {

}

@Override

public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,

float distanceY) {

int firstPos = getFirstVisiblePosition();

int lastPos = getLastVisiblePosition();

int itemCount = getCount();

if(outBound && firstPos != 0 && lastPos != (itemCount -1)){

scrollTo(0, 0);

return false;

}

View firstVeiw = getChildAt(firstPos);

if(!outBound){

firstOut = (int) e2.getY();

}

if(firstVeiw != null && (outBound || (firstPos == 0 && firstVeiw.getTop() == 0 && distanceY < 0))){

distance = firstOut - (int)e2.getRawY();

scrollTo(0, distance/2);

return true;

}

return false;

}

@Override

public void onLongPress(MotionEvent e) {

}

@Override

public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,

float velocityY) {

return false;

}

@Override

public boolean onDown(MotionEvent e) {

return false;

}

});

public boolean dispatchTouchEvent(MotionEvent ev) {

int act = ev.getAction();

if ((act == MotionEvent.ACTION_UP || act == MotionEvent.ACTION_CANCEL)

&& outBound) {

outBound = false;

// scroll back

}

if (!getstureDetector.onTouchEvent(ev)) {

outBound = false;

} else {

outBound = true;

}

Rect rect = new Rect();

getLocalVisibleRect(rect);

TranslateAnimation am = new TranslateAnimation(0, 0, -rect.top, 0);

am.setDuration(300);

startAnimation(am);

scrollTo(0, 0);

return super.dispatchTouchEvent(ev);

};

}

package org.android.view.group;

import java.util.ArrayList;

import android.content.Context;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

/**

*

* @author jiangshide

*

*/

public class AdapterDemo extends BaseAdapter{

private Context mContext;

private ArrayList<Bean> mArrs;

public AdapterDemo(Context c) {

this.mContext = c;

}

public AdapterDemo(Context c,ArrayList<Bean> arr) {

this.mContext = c;

this.mArrs = arr;

}

@Override

public int getCount() {

return mArrs.size();

}

@Override

public Object getItem(int position) {

return mArrs.get(position);

}

@Override

public long getItemId(int position) {

return position;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

if(mArrs == null){

return null;

}

if(convertView == null){

ViewDemo vd = new ViewDemo(mContext);

vd.updateView(mArrs.get(position));

convertView = vd;

}else{

((ViewDemo)convertView).updateView(mArrs.get(position));

}

return convertView;

}

}

package org.android.view.group;

import org.android.view.R;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

/**

*

* @author jiangshide

*

*/

public class ViewDemo extends LinearLayout{

private Context mContext;

private ImageView img;

private Button button;

private TextView textView;

public ViewDemo(Context c) {

super(c);

this.mContext = c;

initialize(c);

}

private void initialize(Context c){

View view = LayoutInflater.from(mContext).inflate(R.layout.list_items,null);

img = (ImageView) view.findViewById(R.id.img);

button = (Button) view.findViewById(R.id.button);

textView = (TextView) view.findViewById(R.id.textview);

addView(view);

}

public void updateView(Bean b){

img.setImageResource(b.getImg());

button.setText(b.getShow());

textView.setTag(b.getText());

}

}



Ok上面这主要是完成ListView与ScrollView冲突的解决方案demo

package org.android.view.group;

import org.android.view.R;

import android.app.Activity;

import android.os.Bundle;

/**

*

* @author jiangshide

*

*/

public class MoreActivity extends Activity{

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.more);

}

}



相关的XML如下:

activity_group.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:orientation="vertical"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Group Activity!"

android:background="#667798"

/>

<org.android.view.group.ScrollDemo

android:id="@+id/textView"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#998877"

android:layout_weight="1"

/>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="horizontal"

android:layout_gravity="bottom"

android:gravity="center"

android:background="#565678"

>

<ImageView

android:id="@+id/img1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/icon"

/>

<ImageView

android:id="@+id/img2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/icon"

/>

<ImageView

android:id="@+id/img3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/icon"

/>

<ImageView

android:id="@+id/img4"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/icon"

/>

</LinearLayout>

</LinearLayout>

home.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"

>

<Button

android:id="@+id/button"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="button"

/>

</LinearLayout>

destory.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"

>

<ImageView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:src="@drawable/icon"

/>

</LinearLayout>

play.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:orientation="vertical"

>

<Button

android:id="@+id/play"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="show Event"

/>

<org.android.view.group.MyListView

android:id="@+id/listView"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

/>

</LinearLayout>

list_items.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"

>

<ImageView

android:id="@+id/img"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

<Button

android:id="@+id/button"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="button"

/>

<TextView

android:id="@+id/textview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

</LinearLayout>

more.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"

>

<TextView

android:id="@+id/textView"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="show text!"

/>

</LinearLayout>

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="org.android.view"

android:versionCode="1"

android:versionName="1.0">

<application android:icon="@drawable/icon" android:label="@string/app_name">

<activity android:name=".group.ActivityGroupDemo"

android:label="@string/app_name">

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

<activity android:name=".group.HomeActivity"/>

<activity android:name=".group.DestoryActivity"/>

<activity android:name=".group.PlayActivity"/>

<activity android:name=".group.MoreActivity"/>

</application>

<uses-sdk android:minSdkVersion="8" />

</manifest>

Ok,以上就是DEMO的完整代码,希望能给相关朋友做有力的参考

原文地址:http://blog.csdn.net/jiangshide/article/details/6597902