Android使用SeekBar时动态显示进度且随SeekBar一起移动
1：第一个类是自定义的一个类 也就是SeekBar上方会跟随其一块移动的控件，其实非常简单的一个类
package com.example.textmovebyseekbar;
import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
//import android.widget.AbsoluteLayout;
public class TextMoveLayout extends ViewGroup {
public TextMoveLayout(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public TextMoveLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
public TextMoveLayout(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// TODO Auto-generated method stub
}
}
2： 第二类就是MainActivity了，代码很简单！稍微看下就懂的了~
package com.example.textmovebyseekbar;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.ViewGroup;
import android.widget.SeekBar;
import android.widget.TextView;
public class MainActivity extends Activity {
private SeekBar seekbar = null;
private String startTimeStr = "19:30:33";
private String endTimeStr = "21:23:21";
private TextView text, startTime, endTime;
/**
* 视频组中第一个和最后一个视频之间的总时长
*/
private int totalSeconds = 0;
/**
* 屏幕宽度
*/
private int screenWidth;
/**
* 自定义随着拖动条一起移动的空间
*/
private TextMoveLayout textMoveLayout;
private ViewGroup.LayoutParams layoutParams;
/**
* 托动条的移动步调
*/
private float moveStep = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video_fast_search);
screenWidth = getWindowManager().getDefaultDisplay().getWidth();
text = new TextView(this);
text.setBackgroundColor(Color.rgb(245, 245, 245));
text.setTextColor(Color.rgb(0, 161, 229));
text.setTextSize(16);
layoutParams = new ViewGroup.LayoutParams(screenWidth, 50);
textMoveLayout = (TextMoveLayout) findViewById(R.id.textLayout);
textMoveLayout.addView(text, layoutParams);
text.layout(0, 20, screenWidth, 80);
/**
* findView
*/
seekbar = (SeekBar) findViewById(R.id.seekbar);
startTime = (TextView) findViewById(R.id.start_time);
endTime = (TextView) findViewById(R.id.end_time);
/**
* setListener
*/
seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListenerImp());
searchVideos();
}
public void searchVideos() {
startTime.setText(startTimeStr);
endTime.setText(endTimeStr);
text.setText(startTimeStr);
totalSeconds = totalSeconds(startTimeStr, endTimeStr);
seekbar.setEnabled(true);
seekbar.setMax(totalSeconds);
seekbar.setProgress(0);
moveStep = (float) (((float) screenWidth / (float) totalSeconds) * 0.8);
}
private class OnSeekBarChangeListenerImp implements
SeekBar.OnSeekBarChangeListener {
// 触发操作，拖动
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
text.layout((int) (progress * moveStep), 20, screenWidth, 80);
text.setText(getCheckTimeBySeconds(progress, startTimeStr));
}
// 表示进度条刚开始拖动，开始拖动时候触发的操作
public void onStartTrackingTouch(SeekBar seekBar) {
}
// 停止拖动时候
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
/**
* 计算连个时间之间的秒数
*/
private static int totalSeconds(String startTime, String endTime) {
String[] st = startTime.split(":");
String[] et = endTime.split(":");
int st_h = Integer.valueOf(st[0]);
int st_m = Integer.valueOf(st[1]);
int st_s = Integer.valueOf(st[2]);
int et_h = Integer.valueOf(et[0]);
int et_m = Integer.valueOf(et[1]);
int et_s = Integer.valueOf(et[2]);
int totalSeconds = (et_h - st_h) * 3600 + (et_m - st_m) * 60
+ (et_s - st_s);
return totalSeconds;
}
/**
* 根据当前选择的秒数还原时间点
*
* @param args
*/
private static String getCheckTimeBySeconds(int progress, String startTime) {
String return_h = "", return_m = "", return_s = "";
String[] st = startTime.split(":");
int st_h = Integer.valueOf(st[0]);
int st_m = Integer.valueOf(st[1]);
int st_s = Integer.valueOf(st[2]);
int h = progress / 3600;
int m = (progress % 3600) / 60;
int s = progress % 60;
if ((s + st_s) >= 60) {
int tmpSecond = (s + st_s) % 60;
m = m + 1;
if (tmpSecond >= 10) {
return_s = tmpSecond + "";
} else {
return_s = "0" + (tmpSecond);
}
} else {
if ((s + st_s) >= 10) {
return_s = s + st_s + "";
} else {
return_s = "0" + (s + st_s);
}
}
if ((m + st_m) >= 60) {
int tmpMin = (m + st_m) % 60;
h = h + 1;
if (tmpMin >= 10) {
return_m = tmpMin + "";
} else {
return_m = "0" + (tmpMin);
}
} else {
if ((m + st_m) >= 10) {
return_m = (m + st_m) + "";
} else {
return_m = "0" + (m + st_m);
}
}
if ((st_h + h) < 10) {
return_h = "0" + (st_h + h);
} else {
return_h = st_h + h + "";
}
return return_h + ":" + return_m + ":" + return_s;
}
}
3： 接下来这个就是布局文件了，其中会用到一些色值！之后我会贴出来，还有使用的图片和其他的xml文件 <?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:background="@color/bg_whitef5" android:orientation="vertical" > <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical" > <com.example.textmovebyseekbar.TextMoveLayout android:id="@+id/textLayout" android:layout_width="fill_parent" android:layout_height="40dp" /> <SeekBar android:id="@+id/seekbar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:focusable="true" android:maxHeight="4dp" android:minHeight="4dp" android:paddingLeft="5dp" android:paddingRight="5dp" android:progressDrawable="@drawable/po_seekbar" android:thumb="@drawable/seekbar_thumb" /> </LinearLayout> <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/start_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_marginLeft="14dp" android:textColor="@color/bg_lin_95" /> <TextView android:id="@+id/end_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_marginRight="14dp" android:textColor="@color/bg_lin_95" /> </RelativeLayout> </LinearLayout>
5： android:progressDrawable="@drawable/po_seekbar"这句会引用一个xml文件 <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@*android:id/background"> <shape> <solid android:color="#c6c6c6" /> </shape> </item> <item android:id="@*android:id/secondaryProgress"> <clip> <shape> <solid android:color="#c6c6c6" /> </shape> </clip> </item> <item android:id="@*android:id/progress"> <clip> <shape> <solid android:color="#06a7fa" /> </shape> </clip> </item> </layer-list>
6：android:thumb="@drawable/seekbar_thumb"也会引用一个xml文件 这其中又有用到两张图片 <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/video_fast_search_nomal" android:state_focused="true" android:state_pressed="false"/> <item android:drawable="@drawable/video_fast_search_press" android:state_focused="true" android:state_pressed="true"/> <item android:drawable="@drawable/video_fast_search_press" android:state_focused="false" android:state_pressed="true"/> <item android:drawable="@drawable/video_fast_search_nomal"/> </selector>
色值：bg_whitef5：#F5F5F5
bg_lin_95：#959595