与viewPager按钮活动? [英] Button activity with viewPager?
问题描述
请不要对我做出判断,我对Android的发展非常新的......我要让与viewPager一个应用程序......我有3个页面,三种不同的布局......但我不能弄清楚如何处理上viewPager第二页的按钮。我发现这个问题,<一href="http://stackoverflow.com/questions/8698789/how-to-write-button-onclick-method-in-viewpager">How在viewpager写按钮的onClick方法,并设置我的codeS这样的:
ViewPagerAdapter:
@覆盖
公共对象instantiateItem(查看传呼机,INT位置)
{
视图V =新景(pager.getContext());
LayoutInflater充气=
(LayoutInflater)pager.getContext()getSystemService(Context.LAYOUT_INFLATER_SERVICE)。
INT渣油= 0;
开关(位置){
情况下0:
渣油= R.layout.deneme;
打破;
情况1:
渣油= R.layout.deneme2;
打破;
案例2:
渣油= R.layout.deneme3;
打破;
}
V = inflater.inflate(渣油,NULL);
((ViewPager)寻呼机).addView(五,0);
返回伏;
}
在这里,我得到的错误: 该方法findViewById(INT)是未定义的类型新View.OnClickListener(){}上线
的LinearLayout L =(的LinearLayout)findViewById(R.id.layout2);
和的方法getResources()是未定义的类型新View.OnClickListener(){}上线
l.setBackgroundDrawable(getResources()getDrawable(R.drawable.background)。);
主要:
公共类ViewPagerProjectActivity延伸活动{
按钮BTN;
查看deneme2lout;
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.main);
ViewPagerAdapter适配器=新ViewPagerAdapter(本);
ViewPager寻呼机=(ViewPager)findViewById(R.id.viewpager);
pager.setAdapter(适配器);
pager.setCurrentItem(0);
LayoutInflater getView = getLayoutInflater();
deneme2lout =(查看)getView.inflate(R.layout.deneme2,NULL);
BTN =(按钮)deneme2lout.findViewById(R.id.button1);
}
公共无效buttonClick(视图v){
如果(v.equals(BTN)){
deneme2lout.setBackgroundDrawable(getResources()getDrawable(R.drawable.background));
}
}
}
因此,正如我得到的,我不能用这两个codeS ......那么应该怎么办呢?我需要改变第二页的背景时,点击第二个布局的按钮。
这是我的deneme2.xml codeS:
&LT; XML版本=1.0编码=UTF-8&GT?;
&LT; AbsoluteLayout的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID /布局2
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:方向=垂直&GT;
&LT;按钮
机器人:ID =@ + ID /按钮1
机器人:layout_width =175dp
机器人:layout_height =95dp
机器人:layout_x =69dp
机器人:layout_y =174dp
机器人:TEXTSIZE =25dp
机器人:文本=更改/&GT;
&LT; / AbsoluteLayout&GT;
这是因为,因为它解释,OnClickListener没有你使用的是内部的OnClickListener这两种方法。替换:
的LinearLayout L =(的LinearLayout)findViewById(R.id.layout2);
与
的LinearLayout L =(的LinearLayout)v.findViewById(R.id.layout2);
如果它接着说v应该是最终的,应该没问题。并替换:
getResources()。getDrawable(R.drawable.background)
与
ViewPagerAdapter.this.context.getResources()。getDrawable(R.drawable.background)
Please don't judge me, i'm extremely new on android developing... I wanna make an app with viewPager... I've got three pages with three different layouts... But i just couldn't figure out how to deal with a button on second page on viewPager. I found this question " How to write button onClick method in viewpager? " and set my codes like this:
ViewPagerAdapter:
@Override
public Object instantiateItem( View pager, int position )
{
View v = new View(pager.getContext());
LayoutInflater inflater =
(LayoutInflater) pager.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int resId = 0;
switch (position) {
case 0:
resId = R.layout.deneme;
break;
case 1:
resId = R.layout.deneme2;
break;
case 2:
resId = R.layout.deneme3;
break;
}
v = inflater.inflate(resId, null);
((ViewPager) pager).addView(v, 0);
return v;
}
Here I'm getting errors: "The method findViewById(int) is undefined for the type new View.OnClickListener(){}" on line
LinearLayout l = (LinearLayout) findViewById(R.id.layout2);
and "The method getResources() is undefined for the type new View.OnClickListener(){}" on line
l.setBackgroundDrawable(getResources().getDrawable(R.drawable.background));
Main:
public class ViewPagerProjectActivity extends Activity {
Button btn;
View deneme2lout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ViewPagerAdapter adapter = new ViewPagerAdapter( this );
ViewPager pager = (ViewPager)findViewById( R.id.viewpager );
pager.setAdapter( adapter );
pager.setCurrentItem(0);
LayoutInflater getView = getLayoutInflater();
deneme2lout = (View) getView.inflate(R.layout.deneme2,null);
btn = (Button) deneme2lout.findViewById(R.id.button1);
}
public void buttonClick(View v) {
if(v.equals(btn)) {
deneme2lout.setBackgroundDrawable(getResources().getDrawable(R.drawable.background));
}
}
}
So as i get, i cannot use those two codes... So how should i do it? I need to change background of the second page when clicked the button on second layout.
And here's my deneme2.xml codes:
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:layout_width="175dp"
android:layout_height="95dp"
android:layout_x="69dp"
android:layout_y="174dp"
android:textSize="25dp"
android:text="Change" />
</AbsoluteLayout>
That's because, as it explains, OnClickListener doesn't have these two methods which you're using inside an OnClickListener. Replace:
LinearLayout l = (LinearLayout) findViewById(R.id.layout2);
with
LinearLayout l = (LinearLayout) v.findViewById(R.id.layout2);
if it then says v should be final, that should be okay. And replace:
getResources().getDrawable(R.drawable.background)
with
ViewPagerAdapter.this.context.getResources().getDrawable(R.drawable.background)
这篇关于与viewPager按钮活动?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!