列表视图中的范围不显示最小值和最大值的搜索栏 [英] Listview not displaying min and max values in Range seek bar
问题描述
我想创建2个拇指和显示最小和最大值一个TextView导引头吧。因此,我请参考本教程的 https://开头code。 google.com/p/range-seek-bar/#Example_usage_as_Integer_range ?
然而,在运行时,TextView的不当拇指被拖动改变。我的项目是由2个java活动的。如附后的主要活动和RangeSeekBar.java这是作为tutorial.Kindly征求你的意见完全一致。
MainActivity.java
包com.example.doubleseekbar;
进口android.app.Activity;
进口android.content.Context;
进口android.os.Bundle;
进口android.util.Log;
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.ViewGroup;
进口android.widget.TextView;进口com.example.gto_doubleseekbar.RangeSeekBar.OnRangeSeekBarChangeListener;公共类MainActivity延伸活动{ 私人TextView的TextView的;
受保护的静态最后弦乐TAG =com.example.doubleseekbar; @覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
TextView的=(的TextView)findViewById(R.id.textView1); //创建RangeSeekBar 20和75之间的整数范围
RangeSeekBar<整数GT;搜索栏=新RangeSeekBar<整数GT;(20,75,本); seekBar.setOnRangeSeekBarChangeListener(新OnRangeSeekBarChangeListener<整数GT;(){
@覆盖
公共无效onRangeSeekBarValuesChanged(RangeSeekBar<>酒吧,整数minValue(最小值),整数maxValue(最大值)){
//处理更改范围值
字符串powerranger =用户选择新的范围值:MIN =+ minValue(最小值)+,MAX =+包括maxValue;
Log.i(TAG,powerranger);
textview.setText(powerranger); }
}); //添加RangeSeekBar至pre定义布局
LayoutInflater吹气=(LayoutInflater)getApplicationContext()。getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
ViewGroup中布局=(ViewGroup中)inflater.inflate(R.layout.activity_main,NULL);
layout.addView(搜索栏);
的setContentView(布局); } @覆盖
公共布尔onCreateOptionsMenu(菜单菜单){
//充气菜单;如果是present这增加了项目操作栏。
。getMenuInflater()膨胀(R.menu.main,菜单);
返回true;
}}
activity_main.xml中
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
的xmlns:工具=http://schemas.android.com/tools
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:paddingBottom会=@扪/ activity_vertical_margin
机器人:paddingLeft =@扪/ activity_horizontal_margin
机器人:paddingRight =@扪/ activity_horizontal_margin
机器人:paddingTop =@扪/ activity_vertical_margin
工具:上下文=MainActivity。> <的TextView
机器人:ID =@ + ID / textView1
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
机器人:layout_alignParentLeft =真
机器人:layout_alignParentTop =真
机器人:layout_marginTop =193dp
机器人:文字=范围值要改变这里/>< / RelativeLayout的>
您的反馈真的很感激。
- >给ID您activity_main.xml中
- >的setContentView(布局)为什么要叫两次?从这些删除的行
code所以你的code应该如下
activity_main.xml中
<的RelativeLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
的xmlns:工具=http://schemas.android.com/tools
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:ID =@ + ID / root_view----->>这是你的主要布局的ID
机器人:paddingBottom会=@扪/ activity_vertical_margin
机器人:paddingLeft =@扪/ activity_horizontal_margin
机器人:paddingRight =@扪/ activity_horizontal_margin
机器人:paddingTop =@扪/ activity_vertical_margin
工具:上下文=MainActivity。> <的TextView
机器人:ID =@ + ID / textView1
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
机器人:layout_alignParentLeft =真
机器人:layout_alignParentTop =真
机器人:layout_marginTop =193dp
机器人:文字=范围值要改变这里/>
< / RelativeLayout的>
在 MainActivity.java
@覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main); //创建RangeSeekBar 20和75之间的整数范围
RangeSeekBar<整数GT;搜索栏=新RangeSeekBar<整数GT;(20,75,本);
seekBar.setOnRangeSeekBarChangeListener(新OnRangeSeekBarChangeListener<整数GT;(){
@覆盖
公共无效onRangeSeekBarValuesChanged(RangeSeekBar<>酒吧,
整数minValue(最小值),整数maxValue(最大值)){
//处理更改范围值
字符串powerranger =用户选择新的范围值:MIN =+ minValue(最小值)+,MAX =+包括maxValue;
//Log.i(TAG,powerranger);
textView1.setText(powerranger);
}
}); //添加RangeSeekBar至pre定义布局
ViewGroup中布局=(ViewGroup中)findViewById(R.id.root_view);
layout.addView(搜索栏);
}
I wanted to create a seeker bar with 2 thumbs and a textview showing the min and max value. Therefore i refer to this tutorial https://code.google.com/p/range-seek-bar/#Example_usage_as_Integer_range?.
However, during runtime, the textview does not change when the thumbs is being dragged. My project is made up of 2 java activity. Main activity as attached below and RangeSeekBar.java which is exactly the same as in the tutorial.Kindly seek your advice.
MainActivity.java
package com.example.doubleseekbar;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.ViewGroup;
import android.widget.TextView;
import com.example.gto_doubleseekbar.RangeSeekBar.OnRangeSeekBarChangeListener;
public class MainActivity extends Activity {
private TextView textview;
protected static final String TAG = "com.example.doubleseekbar";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textview = (TextView) findViewById(R.id.textView1);
// create RangeSeekBar as Integer range between 20 and 75
RangeSeekBar<Integer> seekBar = new RangeSeekBar<Integer>(20, 75, this);
seekBar.setOnRangeSeekBarChangeListener(new OnRangeSeekBarChangeListener<Integer>() {
@Override
public void onRangeSeekBarValuesChanged(RangeSeekBar<?> bar, Integer minValue, Integer maxValue) {
// handle changed range values
String powerranger = "User selected new range values: MIN=" + minValue + ", MAX=" + maxValue;
Log.i(TAG, powerranger);
textview.setText(powerranger);
}
});
// add RangeSeekBar to pre-defined layout
LayoutInflater inflater = (LayoutInflater)getApplicationContext().getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
ViewGroup layout = (ViewGroup) inflater.inflate(R.layout.activity_main,null);
layout.addView(seekBar);
setContentView(layout);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="193dp"
android:text="Range value to be change here" />
</RelativeLayout>
Really grateful for your feedback.
->Give id your activity_main.xml
-> setContentView(layout) why you are calling two times ?? Remove these line from your
code so your code should look like below
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/root_view" ----->>this is id of your main layout
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="193dp"
android:text="Range value to be change here" />
</RelativeLayout>
In MainActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// create RangeSeekBar as Integer range between 20 and 75
RangeSeekBar<Integer> seekBar = new RangeSeekBar<Integer>(20, 75, this);
seekBar.setOnRangeSeekBarChangeListener(new OnRangeSeekBarChangeListener<Integer>() {
@Override
public void onRangeSeekBarValuesChanged(RangeSeekBar<?> bar,
Integer minValue, Integer maxValue) {
// handle changed range values
String powerranger = "User selected new range values: MIN=" + minValue + ", MAX=" + maxValue;
//Log.i(TAG, powerranger);
textView1.setText(powerranger);
}
});
// add RangeSeekBar to pre-defined layout
ViewGroup layout = (ViewGroup) findViewById(R.id.root_view);
layout.addView(seekBar);
}
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