android动态建立textview,android动态布局之动态加入TextView和ListView的方法

本文实例讲述了android动态布局之动态加入TextView和ListView的方法。分享给大家供大家参考。具体实现方法如下&＃xff1a;

package org.guoshi;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.guoshi.adapter.ImageAndTextAdapter;

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup.LayoutParams;

import android.widget.LinearLayout;

import android.widget.ListAdapter;

import android.widget.ListView;

import android.widget.RelativeLayout;

import android.widget.TextView;

public class Main extends Activity {

/** Called when the activity is first created. */

&＃64;Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.friend_info_view);

final LinearLayout linearLayout &＃61; (LinearLayout) findViewById(R.id.groups);

final ListView lv &＃61; new ListView(this);

List> data &＃61; new ArrayList>();

Map map &＃61; new HashMap();

map.put("title", "jayqean");

map.put("imgsrc", R.drawable.icon);

data.add(map);

ListAdapter adapter &＃61; new ImageAndTextAdapter(Main.this, data, R.layout.chats_view_item, new String[] { "title", "imgsrc" }, new int[] {

R.id.chats_view_name,

R.id.chats_view_item_image });

lv.setAdapter(adapter);

final TextView tv1 &＃61; new TextView(this);

tv1.setText("常用联系人");

tv1.setId(1);

final RelativeLayout.LayoutParams lp1 &＃61; new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);

lp1.addRule(RelativeLayout.BELOW, R.id.groups);

tv1.setLayoutParams(lp1);

tv1.setBackgroundColor(R.color.group_view_background);

tv1.setOnClickListener(new OnClickListener() {

boolean flag &＃61; false;

&＃64;Override

public void onClick(View v) {

// TODO Auto-generated method stub

Log.d("tag", tv1.getText().toString());

if(!flag){

linearLayout.addView(lv, linearLayout.indexOfChild(tv1) &＃43; 1);

// lp1.addRule(RelativeLayout.BELOW, 1);

// linearLayout.addView(lv, lp1);

flag &＃61; true;

} else{

linearLayout.removeView(lv);

flag &＃61; false;

}

}

});

linearLayout.addView(tv1, lp1);

// 线性布局 通过参数index控制加入的控件的位置

// ------------------------

// 加入分割线

final TextView line &＃61; new TextView(this);

line.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, 1));

line.setBackgroundColor(Color.WHITE);

linearLayout.addView(line, 1);

// ------------------------

final ListView lv2 &＃61; new ListView(this);

List> data2 &＃61; new ArrayList>();

Map map2 &＃61; new HashMap();

map2.put("title", "xiaobei");

map2.put("imgsrc", R.drawable.icon);

data2.add(map2);

ListAdapter adapter2 &＃61; new ImageAndTextAdapter(Main.this, data2, R.layout.chats_view_item, new String[] { "title", "imgsrc" }, new int[] {

R.id.chats_view_name,

R.id.chats_view_item_image });

lv2.setAdapter(adapter2);

final TextView tv2 &＃61; new TextView(this);

tv2.setText("离线好友");

tv2.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

tv2.setBackgroundColor(R.color.group_view_background);

tv2.setOnClickListener(new OnClickListener() {

boolean flag &＃61; false;

&＃64;Override

public void onClick(View v) {

// TODO Auto-generated method stub

Log.d("tag", tv2.getText().toString());

if(!flag){

linearLayout.addView(lv2, linearLayout.indexOfChild(tv2) &＃43; 1);

flag &＃61; true;

} else{

linearLayout.removeView(lv2);

flag &＃61; false;

}

}

});

linearLayout.addView(tv2, 2);

}

}

控制布局,可以通过RelativeLayout.LayoutParams类

final LinearLayout linearLayout &＃61; (LinearLayout) findViewById(R.id.groups);

final TextView tv1 &＃61; new TextView(this);

tv1.setText("常用联系人");

RelativeLayout.LayoutParams lp1 &＃61; new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);

lp1.addRule(RelativeLayout.BELOW, R.id.groups);

tv1.setLayoutParams(lp1);

linearLayout.addView(tv1, lp1);

也可采用linearLayout.addView(tv1, 0); // 线性布局 通过参数index控制加入的控件的位置

package org.guoshi.adapter;

import java.util.List;

import java.util.Map;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Checkable;

import android.widget.ImageView;

import android.widget.SimpleAdapter;

import android.widget.TextView;

public class ImageAndTextAdapter extends SimpleAdapter {

private Context mcontext;

private int[] mTo;

private String[] mFrom;

private ViewBinder mViewBinder;

private List extends Map> mData;

private int mResource;

private LayoutInflater mInflater;

public ImageAndTextAdapter(Context context,

List extends Map> data, int resource, String[] from,

int[] to) {

super(context, data, resource, from, to);

mcontext &＃61; context;

mData &＃61; data;

mResource &＃61; resource;

mFrom &＃61; from;

mTo &＃61; to;

mInflater &＃61; (LayoutInflater) context

.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

// mInflater &＃61; LayoutInflater.from(mcontext);

}

/**

* &＃64;see android.widget.Adapter#getView(int, View, ViewGroup)

*/

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

return createViewFromResource(position, convertView, parent, mResource);

}

private View createViewFromResource(int position, View convertView,

ViewGroup parent, int resource) {

View v;

if (convertView &＃61;&＃61; null) {

v &＃61; mInflater.inflate(resource, parent, false);

final int[] to &＃61; mTo;

final int count &＃61; to.length;

final View[] holder &＃61; new View[count];

for (int i &＃61; 0; i

holder[i] &＃61; v.findViewById(to[i]);

}

v.setTag(holder);

} else {

v &＃61; convertView;

}

bindView(position, v);

// final int index &＃61; position;

// v.setOnClickListener(new OnClickListener() {

//

// public void onClick(View v) {

// // TODO Auto-generated method stub

// Log.d("item", index &＃43; "");

// }

// });

return v;

}

private void bindView(int position, View view) {

final Map dataSet &＃61; mData.get(position);

if (dataSet &＃61;&＃61; null) {

return;

}

final ViewBinder binder &＃61; mViewBinder;

final View[] holder &＃61; (View[]) view.getTag();

final String[] from &＃61; mFrom;

final int[] to &＃61; mTo;

final int count &＃61; to.length;

for (int i &＃61; 0; i

final View v &＃61; holder[i];

if (v !&＃61; null) {

final Object data &＃61; dataSet.get(from[i]);

String text &＃61; data &＃61;&＃61; null ? "" : data.toString();

if (text &＃61;&＃61; null) {

text &＃61; "";

}

boolean bound &＃61; false;

if (binder !&＃61; null) {

bound &＃61; binder.setViewValue(v, data, text);

}

if (!bound) {

if (v instanceof Checkable) {

if (data instanceof Boolean) {

((Checkable) v).setChecked((Boolean) data);

} else {

throw new IllegalStateException(v.getClass()

.getName()

&＃43; " should be bound to a Boolean, not a "

&＃43; data.getClass());

}

} else if (v instanceof TextView) {

setViewText((TextView) v, text);

} else if (v instanceof ImageView) {

if (data instanceof Integer) {

setViewImage((ImageView) v, (Integer) data);

} else {

setViewImage((ImageView) v, text);

}

} else {

throw new IllegalStateException(

v.getClass().getName()

&＃43; " is not a "

&＃43; " view that can be bounds by this SimpleAdapter");

}

}

}

}

}

/**

* Called by bindView() to set the image for an ImageView but only if there

* is no existing ViewBinder or if the existing ViewBinder cannot handle

* binding to an ImageView.

*

* This method is called instead of {&＃64;link #setViewImage(ImageView, String)}

* if the supplied data is an int or Integer.

*

* &＃64;param v

* ImageView to receive an image

* &＃64;param value

* the value retrieved from the data set

*

* &＃64;see #setViewImage(ImageView, String)

*/

public void setViewImage(ImageView v, int value) {

v.setImageResource(value);

}

/**

* Called by bindView() to set the image for an ImageView but only if there

* is no existing ViewBinder or if the existing ViewBinder cannot handle

* binding to an ImageView.

*

* By default, the value will be treated as an image resource. If the value

* cannot be used as an image resource, the value is used as an image Uri.

*

* This method is called instead of {&＃64;link #setViewImage(ImageView, int)} if

* the supplied data is not an int or Integer.

*

* &＃64;param v

* ImageView to receive an image

* &＃64;param value

* the value retrieved from the data set

*

* &＃64;see #setViewImage(ImageView, int)

*/

public void setViewImage(ImageView v, String value) {

Bitmap bitMap &＃61; BitmapFactory.decodeFile(value);

v.setImageBitmap(bitMap);

}

}

下面是friend_info_view.xml

android:orientation&＃61;"vertical" android:layout_width&＃61;"fill_parent"

android:layout_height&＃61;"fill_parent" android:background&＃61;"#ffffff">

android:layout_height&＃61;"wrap_content">

android:adjustViewBounds&＃61;"true" android:layout_width&＃61;"&＃64;dimen/self_image_width"

android:layout_height&＃61;"&＃64;dimen/self_image_height"

android:layout_marginLeft&＃61;"5.0dip" android:layout_marginBottom&＃61;"10.0dip"

android:layout_marginTop&＃61;"3.0dip" android:src&＃61;"&＃64;drawable/default_image" />

android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"

android:src&＃61;"&＃64;drawable/status_available" android:layout_marginLeft&＃61;"8.0dip"

android:layout_marginTop&＃61;"20.0dip" android:layout_toRightOf&＃61;"&＃64;id/selfImage" />

android:layout_height&＃61;"wrap_content" android:layout_marginTop&＃61;"20.0dip"

android:layout_marginLeft&＃61;"8.0dip" android:text&＃61;"Tap here to set your status"

android:layout_toRightOf&＃61;"&＃64;&＃43;id/currentStatus" />

android:adjustViewBounds&＃61;"true" android:layout_height&＃61;"50dip"

android:layout_width&＃61;"fill_parent" android:text&＃61;"Search..." />

android:layout_height&＃61;"wrap_content" android:orientation&＃61;"vertical" >

chats_view_item.xml

android:orientation&＃61;"vertical" android:layout_width&＃61;"fill_parent"

android:layout_height&＃61;"fill_parent" android:background&＃61;"&＃64;color/white">

android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content">

android:layout_width&＃61;"&＃64;dimen/friend_image_width"

android:layout_height&＃61;"&＃64;dimen/friend_image_height"

android:paddingLeft&＃61;"5.0dip" android:paddingTop&＃61;"2.0dip"

android:src&＃61;"&＃64;drawable/default_image" />

android:paddingLeft&＃61;"10.0dip" android:textStyle&＃61;"bold"

android:ellipsize&＃61;"marquee" android:layout_width&＃61;"wrap_content"

android:layout_height&＃61;"wrap_content" android:text&＃61;"username"

android:singleLine&＃61;"true" android:paddingTop&＃61;"2.0dip"

android:layout_toRightOf&＃61;"&＃64;&＃43;id/chats_view_item_image" />

android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"

android:paddingLeft&＃61;"10.0dip" android:paddingTop&＃61;"1.0dip"

android:layout_below&＃61;"&＃64;&＃43;id/chats_view_name" android:layout_toRightOf&＃61;"&＃64;&＃43;id/chats_view_item_image"

android:src&＃61;"&＃64;drawable/jabber_available" />

android:textColor&＃61;"&＃64;android:color/secondary_text_light"

android:ellipsize&＃61;"marquee" android:layout_width&＃61;"fill_parent"

android:layout_height&＃61;"wrap_content" android:text&＃61;"available"

android:singleLine&＃61;"true" android:paddingLeft&＃61;"2.0dip"

android:layout_toRightOf&＃61;"&＃64;&＃43;id/friend_status_icon"

android:layout_below&＃61;"&＃64;&＃43;id/chats_view_name" />

效果图如下:

希望本文所述对大家的Android程序设计有所帮助。