在程序中有时候几个控件要放在一起，想随意放在布局上，而且不仅一个布局要使用，此时就想把这几个控件定义成一个新的View就好了，于是就有了下面这个类新的控件类SeekBarGroup.java，SeekBarGroup.java集成了三个View，有两个TextView，一个SeekBar，就是一个显示时间的进度条，这只是一种应用思想，可以是任何View的集合

下面先看下效果，就是一个普通的进度条加两个文本显示，

关键代码

package com.adayome.bddemo.widgets;

import android.content.Context;

import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.view.Gravity;

import android.widget.RelativeLayout;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TextView;

import com.adayome.bddemo.R;

import com.adayome.bddemo.utils.LogUtils;

public class SeekBarGroup extends RelativeLayout {

private static final int tv_start_id = 0x1111111;

private static final int tv_end_id = 0x1111112;

private static final int sb_time_id = 0x1111113;

private SeekBar sbTime;

private TextView tvStart;

private TextView tvEnd;

// 布局参数设置

private RelativeLayout.LayoutParams tvStartLp, tvEndLp, sbTimeLp;

public SeekBarGroup(Context context, AttributeSet attrs) {

super(context, attrs);

setGravity(Gravity.CENTER);

initView(context);

// 用代码直接向布局中添加控件

addView(tvStart, tvStartLp);

addView(tvEnd, tvEndLp);

addView(sbTime, sbTimeLp);

}

private void initView(Context context) {

tvStart = new TextView(context);

tvEnd = new TextView(context);

// 设置每一个控件的布局参数

tvStartLp = new LayoutParams(LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT);

tvEndLp = new LayoutParams(LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT);

tvStart.setId(tv_start_id);

tvStart.setText("start");

tvEnd.setId(tv_end_id);

tvEnd.setText("end");

// 往布局参数中添加属性

tvStartLp

.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);

tvStartLp.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);

tvEndLp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);

tvEndLp.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);

initSeekBar(context);

LogUtils.i("-----initView");

}

private void initSeekBar(Context context) {

sbTime = new SeekBar(context);

sbTimeLp = new LayoutParams(LayoutParams.MATCH_PARENT,

LayoutParams.WRAP_CONTENT);

sbTimeLp.addRule(RelativeLayout.LEFT_OF, tv_end_id);

sbTimeLp.addRule(RelativeLayout.RIGHT_OF, tv_start_id);

sbTimeLp.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);

sbTime.setId(sb_time_id);

sbTime.setMax(100);

sbTime.setProgress(30);

Drawable d = context.getResources().getDrawable(

R.drawable.seekbar_style);

sbTime.setProgressDrawable(d);

Drawable thumb = context.getResources().getDrawable(

R.drawable.seek_thumb_pic);

sbTime.setThumb(thumb);

sbTime.setPadding(15, 0, 15, 0);

sbTime.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

@Override

public void onStopTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {

// TODO Auto-generated method stub

}

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

// TODO Auto-generated method stub

setStart(String.valueOf(progress));

LogUtils.i("onProgressChanged pro = " + progress);

}

});

}

public void setStart(String start) {

tvStart.setText(start);

}

public void setEnd(String end) {

tvEnd.setText(end);

}

public void setProgress(int progress) {

sbTime.setProgress(progress);

}

public int getMax() {

return sbTime.getMax();

}

public interface SeekBarGroupListener {

public void setStart(String start);

public void setEnd(String start);

public void onProgressChanged(int progress, boolean fromUser);

}

}主要跟平常的控件一样使用就可以了，在布局中的定义

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

android:id="@+id/tv_text1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="测试2" />

android:id="@+id/seekbar_group"

android:layout_width="match_parent"

android:layout_height="wrap_content" />

调用方法

package com.adayome.bddemo;

import java.util.Random;

import java.util.Timer;

import java.util.TimerTask;

import com.adayome.bddemo.widgets.SeekBarGroup;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.util.Log;

import android.view.GestureDetector;

import android.view.LayoutInflater;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.View.OnTouchListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.RelativeLayout;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TextView;

public class Fragment2 extends BaseFragment implements OnClickListener {

private static final String TAG = "Fragment2";

private Random mRan = new Random();

private SeekBarGroup group;

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

// TODO Auto-generated method stub

View v = inflater.inflate(R.layout.fragment_2, container, false);

return initWidgets(v);

}

@Override

public void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

timer.schedule(task, 1000, 1000); // 1s后执行task,经过1s再次执行

}

Handler handler = new Handler() {

public void handleMessage(Message msg) {

if (msg.what == 1) {

group.setProgress(mRan.nextInt(100));

}

super.handleMessage(msg);

};

};

Timer timer = new Timer();

TimerTask task = new TimerTask() {

@Override

public void run() {

// 需要做的事:发送消息

Message message = new Message();

message.what = 1;

handler.sendMessage(message);

}

};

private View initWidgets(View v) {

group = (SeekBarGroup) v.findViewById(R.id.seekbar_group);

group.setEnd(String.valueOf(group.getMax()));

return v;

}

}