⑴ 求助，android里面的seekbar怎么垂直显示
把seekbar复写了。。旋转90度就可以了。
import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.SeekBar;
public class SlideBar extends SeekBar {
private int oHeight = 100;
private int oWidth = 30;
private int oProgress = -1;
private int oOffset = -1;;
private float xPos = -1;
private float yPos = -1;
private int top = -1;
private int bottom = -1;
private int left = -1;
private int right = -1;
public SlideBar(Context context) {
super(context);
}
public SlideBar(Context context, AttributeSet attrs) {
super(context, attrs);
oOffset = this.getThumbOffset();
oProgress = this.getProgress();
}
public SlideBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = View.MeasureSpec.getSize(heightMeasureSpec);
oHeight = height;
this.setMeasuredDimension(oWidth, oHeight);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(h, w, oldw, oldh);
}
// 设置layout
protected void onLayout(boolean changed, int l, int t, int r, int b) {
super.onLayout(changed, l, t, r, b);
left = l;
right = r;
top = t;
bottom = b;
}
// 画出滚动条
protected void onDraw(Canvas c) {
// 旋转
c.rotate(90);
//控制左右位置
c.translate(0,-30);
super.onDraw(c);
}
public boolean onTouchEvent(MotionEvent event) {
xPos = event.getX();
yPos = event.getY();
float progress = 1-(yPos-this.getTop())/(this.getBottom()- this.getTop());
oOffset = this.getThumbOffset();
oProgress = this.getProgress();
Log.d("offset" + System.nanoTime(), new Integer(oOffset).toString());
Log.d("progress" + System.nanoTime(), new Integer(oProgress).toString());
float offset;
offset = progress * (this.getBottom() - this.getTop());
this.setThumbOffset((int)offset);
Log.d("offset_postsetprogress" + System.nanoTime(), new Integer(oOffset).toString());
Log.d("progress_postsetprogress" + System.nanoTime(), new Integer(oProgress).toString());
// this.setProgress((int)(100*event.getY()/this.getBottom()));
this.setProgress((int)(100 * progress));
return true;
}
}
⑵ 安卓开发中 滑动条（seekbar）控件显示异常，是不是我的开发环境有问题，能设置吗图如下：
你的seekbar高度设置为wrap_content试一下。
holo的seekbar主题有点不一样。
开什么国际玩笑。只有相对布局才能用？？我做这个好几个月了，没有上百次用这个控件也有几十次了。我都没有发现还有这个隐藏功能
⑶ Android SeekBar,动态显示进度且随SeekBar一起移动
花了点时间做，其实这个东西本没有什么，裂肢主要的问题就是在于seekBar不是顶格的，存在一个空隙，这个空隙又不知道值是多少，所以这个很难计算，后来去看了资料，paddingStart = 0dp,PaddingEnd=0dp 可以使进度条填充到整肆启世个界面，但也不大符旁樱合需求，所以设定paddingStart = 15dp,既能不改变原来seekbar的效果，也可以知道这个间隙是多少。
这里就是计算具体的textview位置的地方了
textview的文本是固定宽度的，动态的太难控制了，不是这种简单的操作能够搞定的。
seekbar的宽度就随意了，注意设置下paddingStart 和 paddingEnd。
xml 如下：
好了效果实现了，这种实现方式算是比较简单了。
⑷ android 怎么实现类似SeekBar的单向调节改成双向调节范围
网上有个重写View实现的，SeekBarPressure
以下是一个使用SeekBar来调节系统音量的实例：
XML代码：
<SeekBar
android:id="@+id/sound"
android:layout_width="150px"
android:layout_height="10px"
android:max="100" //设置拖动条最大值
android:progress="10" //设置拖动条当前值
android:progressDrawable="@layout/seekbar_style" //拖动条样式
android:thumb="@layout/thumb" /> //滑块样式
seekbar_style.xml:
<?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>
<corners android:radius="10dip" />
<gradient android:startColor="#ffffffff"
android:centerColor="#ff000000" android:endColor="#ff808A87"
android:centerY="1" android:angle="270" />
</shape>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="10dip" />
<gradient android:startColor="#ffffffff"
android:centerColor="#ffFFFF00" android:endColor="#ffAABD00"
android:centerY="1" android:angle="270" />
</shape>
</clip>
</item>
</layer-list>
thumb.xml:
<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- 按下状态 -->
<item
android:state_pressed="true"
android:drawable="@drawable/thumb_normal"
/>
<!-- 普通无焦点状态 -->
<item
android:state_focused="false"
android:state_pressed="false"
android:drawable="@drawable/thumb_normal"
/>
</selector>
bacon_seekbar.xml:
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android"
>
<item
android:id="@+android:id/background"
android:drawable="@drawable/thumb_normal" />
<item
android:id="@+android:id/SecondaryProgress"
android:drawable="@drawable/thumb_normal" />
<item
android:id="@+android:id/progress"
android:drawable="@drawable/thumb_normal" />
</layer-list>
java代码：
public class PianoActivity extends Activity {
/** Called when the activity is first created. */
private ImageButton imageButton_white1;
private MediaPlayer mediaPlayer01;
public AudioManager audiomanage;
private TextView mVolume ; //显示当前音量
public SeekBar soundBar;
private int maxVolume, currentVolume;
private int volume=0; //初始化声音
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mediaPlayer01 = new MediaPlayer();
imageButton_white1=(ImageButton)findViewById(R.id.white1);
final SeekBar soundBar=(SeekBar)findViewById(R.id.sound); //音量设置
mVolume = (TextView)findViewById(R.id.mVolume);
audiomanage = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
maxVolume = audiomanage.getStreamMaxVolume(AudioManager.STREAM_MUSIC); //获取系统最大音量
soundBar.setMax(maxVolume); //拖动条最高值与系统最大声匹配
currentVolume = audiomanage.getStreamVolume(AudioManager.STREAM_MUSIC); //获取当前值
soundBar.setProgress(currentVolume);
mVolume.setText(currentVolume*100/maxVolume + " %");
soundBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() //调音监听器
{
public void onProgressChanged(SeekBar arg0,int progress,boolean fromUser)
{
audiomanage.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);
currentVolume = audiomanage.getStreamVolume(AudioManager.STREAM_MUSIC); //获取当前值
soundBar.setProgress(currentVolume);
mVolume.setText(currentVolume*100/maxVolume + " %");
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
TextView的XML没有给出，需要自己添加。
⑸ androd中怎么替换android seekbar 刻度的系统滑块图标
android:thumb
用这个属性，传一个Drawable
⑹ android中怎么用SeekBar控制视频播放的进度
android中用SeekBar控制视频播放的进度其实现方法如下：
1：第一个类是厅稿自定义桐察的一个类 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！
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;
/扮轮孝**
* 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！
<?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>
4： 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>
5：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>