问题描述
我在申请3-4活动,个个有一些事件侦听器的工作很好。
但是,只有在一个活动我根本无法获得事件处理工作。
我想从这个线程解决方案:HTTP://www.anddev.org/view-layout-resource-problems-f27/ontouch-not-called-t16578.html
它不为我工作。我试图手动设置为OnClickListeners从Java code,机器人ImageViews:从的onClick XML
看来,一些其他组件处理所有的事件,或我的活动不具有一定的权限来处理事件。
我应该把在AndroidMainfest.xml东西我活动了能够处理的事件?
希望有人有这个想法,我应该尝试一下,这里的code:
活动:
包com.renegade.begining;进口android.app.Activity;
进口android.graphics.Bitmap;
进口android.graphics.BitmapFactory;
进口android.os.Bundle;进口android.view.MotionEvent;
进口android.view.View;
进口android.widget.ImageView;
公共类NotesOnStaff延伸活动{
@覆盖
公共无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.notes_on_staff);
/ * NoteView2注=(NoteView2)findViewById(R.id.note_red);
位图BM = BitmapFactory.de codeResource(getResources(),R.drawable.note_red);
note.setImage(BM);
* / }
公共无效onClickEventBtn1(视图v){
// TODO自动生成方法存根
ImageView的keyboard_letter =(ImageView的)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.INVISIBLE);
} 公共无效onClickEventBtn2(视图v){
// TODO自动生成方法存根
ImageView的keyboard_letter =(ImageView的)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.VISIBLE);
} @覆盖
公共布尔onTouchEvent(MotionEvent事件){
开关(event.getAction()){
案例MotionEvent.ACTION_DOWN:
ImageView的keyboard_letter =(ImageView的)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.VISIBLE);
返回true;
案例MotionEvent.ACTION_UP:
返回false; //别的东西
默认:
返回false; //所有其他
}
}
}
布局:
<?XML版本=1.0编码=UTF-8&GT?;
< RelativeLayout的
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / notes_on_staff_layout
机器人:背景=@绘制/ background_ver
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT>
< ImageView的
机器人:ID =@ + ID / notes_keyboard
机器人:SRC =@绘制/键盘
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
机器人:layout_alignParentBottom =真
机器人:layout_centerHorizontal =真
机器人:layout_marginBottom =20dip 机器人:可点击=真正的机器人:可聚焦=真/> < ImageView的
机器人:ID =@ + ID / btn_hide
机器人:SRC =@绘制/ btnhide
机器人:layout_alignParentLeft =真
机器人:layout_marginTop =40dip
机器人:layout_marginLeft =10dip
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
安卓的onClick =onClickEventBtn1
机器人:可点击=真正的机器人:可聚焦=真/> < ImageView的
机器人:ID =@ + ID / btn_show
机器人:layout_alignBottom =@ ID / btn_hide
机器人:layout_toRightOf =@ ID / btn_hide
机器人:SRC =@绘制/ btnshow
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
安卓的onClick =onClickEventBtn2
机器人:可点击=真正的机器人:可聚焦=真/> < ImageView的 机器人:ID =@ + ID /参谋
机器人:SRC =@绘制/参谋
机器人:layout_below =@ ID / btn_hide
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
机器人:layout_centerHorizontal =真
机器人:layout_marginTop =0dip
机器人:layout_above =@ ID / notes_keyboard
/>
< com.renegade.begining.NoteView2
机器人:ID =@ + ID / note_red
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
/>
< ImageView的
机器人:ID =@ + ID / keyboard_letters
机器人:layout_alignLeft =@ + ID / notes_keyboard
机器人:layout_alignBottom =@ + ID / notes_keyboard
机器人:layout_marginBottom =10dip
机器人:知名度=隐形
机器人:SRC =@绘制/ keyboard_letters
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
机器人:可点击=真正的机器人:可聚焦=真/>
< / RelativeLayout的>
您的EventListener是吸收所有DOWN事件。试着让它返回的假
而不是真这样子视图得到一个机会,反应为好,因为我觉得对于的onClick
来消防适当子视图需要注册一个持续向下那么UP(只是一个UP是不够的,想想滑动手指,一键到另一个然后释放;也火灾因为这是用户想要取消指示。)
I have 3-4 activities in the application and all of them have some event listeners that work nicely.However only on one activity i simply can't get the event handling to work.I tried the solution from this thread:http://www.anddev.org/view-layout-resource-problems-f27/ontouch-not-called-t16578.htmlIt doesn't work for me. I tried to manually set OnClickListeners for ImageViews from java code, android:onClick from XML.
It seems that some other component handles all the events, or my activity doesn't have some permission to handle events.Should I put something in the AndroidMainfest.xml for my activity that enables handling events?
Hope someone has the idea what should i try, here's the code:
Activity:
package com.renegade.begining;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
public class NotesOnStaff extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.notes_on_staff);
/* NoteView2 note=(NoteView2)findViewById(R.id.note_red);
Bitmap bm=BitmapFactory.decodeResource(getResources(), R.drawable.note_red);
note.setImage(bm);
*/
}
public void onClickEventBtn1(View v) {
// TODO Auto-generated method stub
ImageView keyboard_letter=(ImageView)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.INVISIBLE);
}
public void onClickEventBtn2(View v) {
// TODO Auto-generated method stub
ImageView keyboard_letter=(ImageView)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.VISIBLE);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
ImageView keyboard_letter=(ImageView)findViewById(R.id.keyboard_letters);
keyboard_letter.setVisibility(View.VISIBLE);
return true;
case MotionEvent.ACTION_UP:
return false; // something else
default:
return false;// all others
}
}
}
Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/notes_on_staff_layout"
android:background="@drawable/background_ver"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/notes_keyboard"
android:src="@drawable/keyboard"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="20dip"
android:clickable="true" android:focusable="true"/>
<ImageView
android:id="@+id/btn_hide"
android:src="@drawable/btnhide"
android:layout_alignParentLeft="true"
android:layout_marginTop="40dip"
android:layout_marginLeft="10dip"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onClick="onClickEventBtn1"
android:clickable="true" android:focusable="true"/>
<ImageView
android:id="@+id/btn_show"
android:layout_alignBottom="@id/btn_hide"
android:layout_toRightOf="@id/btn_hide"
android:src="@drawable/btnshow"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onClick="onClickEventBtn2"
android:clickable="true" android:focusable="true"/>
<ImageView
android:id="@+id/staff"
android:src="@drawable/staff"
android:layout_below="@id/btn_hide"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="0dip"
android:layout_above="@id/notes_keyboard"
/>
<com.renegade.begining.NoteView2
android:id="@+id/note_red"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<ImageView
android:id="@+id/keyboard_letters"
android:layout_alignLeft="@+id/notes_keyboard"
android:layout_alignBottom="@+id/notes_keyboard"
android:layout_marginBottom="10dip"
android:visibility="invisible"
android:src="@drawable/keyboard_letters"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:clickable="true" android:focusable="true"/>
</RelativeLayout>
Your EventListener is absorbing all DOWN events. Try having it return false
instead of true so subviews get a chance to react as well, as I think for onClick
to fire properly the child view needs to register a continuous DOWN then an UP (just an UP isn't enough; think about sliding your finger off of a button onto another one then releasing; neither fires as that's an indication that the user wants to cancel.)
这篇关于的onClick不会开枪的ImageView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!