⑴ 求助，android裡面的seekbar怎麼垂直顯示
把seekbar復寫了。。旋轉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);
}
// 設置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;
}
// 畫出滾動條
protected void onDraw(Canvas c) {
// 旋轉
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 安卓開發中 滑動條（seekbar）控制項顯示異常，是不是我的開發環境有問題，能設置嗎圖如下：
你的seekbar高度設置為wrap_content試一下。
holo的seekbar主題有點不一樣。
開什麼國際玩笑。只有相對布局才能用？？我做這個好幾個月了，沒有上百次用這個控制項也有幾十次了。我都沒有發現還有這個隱藏功能
⑶ Android SeekBar,動態顯示進度且隨SeekBar一起移動
花了點時間做，其實這個東西本沒有什麼，裂肢主要的問題就是在於seekBar不是頂格的，存在一個空隙，這個空隙又不知道值是多少，所以這個很難計算，後來去看了資料，paddingStart = 0dp,PaddingEnd=0dp 可以使進度條填充到整肆啟世個界面，但也不大符旁櫻合需求，所以設定paddingStart = 15dp,既能不改變原來seekbar的效果，也可以知道這個間隙是多少。
這里就是計算具體的textview位置的地方了
textview的文本是固定寬度的，動態的太難控制了，不是這種簡單的操作能夠搞定的。
seekbar的寬度就隨意了，注意設置下paddingStart 和 paddingEnd。
xml 如下：
好了效果實現了，這種實現方式算是比較簡單了。
⑷ android 怎麼實現類似SeekBar的單向調節改成雙向調節范圍
網上有個重寫View實現的，SeekBarPressure
以下是一個使用SeekBar來調節系統音量的實例：
XML代碼：
<SeekBar
android:id="@+id/sound"
android:layout_width="150px"
android:layout_height="10px"
android:max="100" //設置拖動條最大值
android:progress="10" //設置拖動條當前值
android:progressDrawable="@layout/seekbar_style" //拖動條樣式
android:thumb="@layout/thumb" /> //滑塊樣式
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">
<!-- 按下狀態 -->
<item
android:state_pressed="true"
android:drawable="@drawable/thumb_normal"
/>
<!-- 普通無焦點狀態 -->
<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代碼：
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 ; //顯示當前音量
public SeekBar soundBar;
private int maxVolume, currentVolume;
private int volume=0; //初始化聲音
@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); //音量設置
mVolume = (TextView)findViewById(R.id.mVolume);
audiomanage = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
maxVolume = audiomanage.getStreamMaxVolume(AudioManager.STREAM_MUSIC); //獲取系統最大音量
soundBar.setMax(maxVolume); //拖動條最高值與系統最大聲匹配
currentVolume = audiomanage.getStreamVolume(AudioManager.STREAM_MUSIC); //獲取當前值
soundBar.setProgress(currentVolume);
mVolume.setText(currentVolume*100/maxVolume + " %");
soundBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() //調音監聽器
{
public void onProgressChanged(SeekBar arg0,int progress,boolean fromUser)
{
audiomanage.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);
currentVolume = audiomanage.getStreamVolume(AudioManager.STREAM_MUSIC); //獲取當前值
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沒有給出，需要自己添加。
⑸ androd中怎麼替換android seekbar 刻度的系統滑塊圖標
android:thumb
用這個屬性，傳一個Drawable
⑹ android中怎麼用SeekBar控制視頻播放的進度
android中用SeekBar控制視頻播放的進度其實現方法如下：
1：第一個類是廳稿自定義桐察的一個類 也就是SeekBar上方會跟隨其一塊移動的控制項，其實非常簡單的一個類
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： 第二類就是MainActivity了，代碼很簡單！
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;
/**
* 視頻組中第一個和最後一個視頻之間的總時長
*/
private int totalSeconds = 0;
/扮輪孝**
* 屏幕寬度
*/
private int screenWidth;
/**
* 自定義隨著拖動條一起移動的空間
*/
private TextMoveLayout textMoveLayout;
private ViewGroup.LayoutParams layoutParams;
/**
* 托動條的移動步調
*/
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 {
// 觸發操作，拖動
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
text.layout((int) (progress * moveStep), 20, screenWidth, 80);
text.setText(getCheckTimeBySeconds(progress, startTimeStr));
}
// 表示進度條剛開始拖動，開始拖動時候觸發的操作
public void onStartTrackingTouch(SeekBar seekBar) {
}
// 停止拖動時候
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
/**
* 計算連個時間之間的秒數
*/
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;
}
/**
* 根據當前選擇的秒數還原時間點
*
* @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： 接下來這個就是布局文件了，其中會用到一些色值！
<?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"這句會引用一個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"也會引用一個xml文件 這其中又有用到兩張圖片
<?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>