Android Bitmap.getPixel() Is Annoyingly Inaccuracte

Android Bitmap.getPixel() Is Annoyingly Inaccuracte - android

Project OverView : Theres two images. Click the top image (in my app i use a cat pic) and it will set the bottom image background to the color of the pixel on the location you clicked at.
The Problem: The background color doesn't match the color of the pixel at the location of your click at times its randomly colored, other times its off by a few shades. Its wierd.
This is the main java code :
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.ImageView;
public class ColorRead extends Activity
implements OnTouchListener{
Integer myColor;
String TAG;
Bitmap bMap,bMap2;
ImageView image,image2;
Button BTN;
MotionEvent mEvent;
Integer touchX,touchY;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle Icicle) {
super.onCreate(Icicle);
setContentView(R.layout.main);
bMap = BitmapFactory.decodeResource(getResources(), R.drawable.catpic);
image2 = (ImageView) findViewById(R.id.bitmap2);
image = (ImageView) findViewById(R.id.bitmap);
image.setImageBitmap(bMap);
image.setOnTouchListener(this);
}
public void scanForColor(int xMouse, int yMouse)
{
myColor = bMap.getPixel(xMouse,yMouse);
Log.i(TAG, " R:"+Color.red(myColor)+" G:"+Color.green(myColor)+" B:"+Color.blue(myColor));
image2.setBackgroundColor(myColor);
}
#Override
public boolean onTouch(View v, MotionEvent e) {
Integer id = v.getId();
switch(id)
{
case R.id.bitmap:
if(e.getAction() == MotionEvent.ACTION_DOWN)
{
touchX = (int)e.getX();
touchY = (int)e.getY();
}
scanForColor(touchX,touchY);
Log.i(TAG,touchX.toString());
break;
default:
break;
}
return false;
}
}
Heres the Main.XML :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView android:id="#+id/bitmap"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/catpic"
/>
<ImageView android:id="#+id/bitmap2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/catpic"
/>
<Button android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/myButton"
/>
</LinearLayout>

Related

I need popup message like map info window

I am unable to find the way to create a popup like info window in map . I have to use it to show the three button inside
Yes
later
No
these three options are clickable.
The pop up will show above three button in vertical manner in recycler view . I have created recycler view and pop up view but how to show it like a Tooltip with clickabe

you can use PopupWindow, its starting with API +23
<?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="wrap_content" android:background="#FFBBFFBB" android:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="10dp" android:text="Hello My Window" android:textSize="20sp" /> <Button android:id="#+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="10dp" android:text="Button" android:textSize="20sp" /> </LinearLayout>
class
package com.example.hellopopupwindow;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.Toast;
public class MainActivity extends Activity {
private Context mContext = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showPopupWindow(view);
}
});
}
private void showPopupWindow(View view) {
// A custom layout, as the display content
View contentView = LayoutInflater.from(mContext).inflate(
R.layout.pop_window, null);
// Set the button click event
Button button = (Button) contentView.findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(mContext, "button is pressed",
Toast.LENGTH_SHORT).show();
}
});
final PopupWindow popupWindow = new PopupWindow(contentView,
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
popupWindow.setTouchable(true);
popupWindow.setTouchInterceptor(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.i("mengdd", "onTouch : ");
return false;
// It returns true if the words, the touch event will be blocked
// PopupWindow onTouchEvent interception is not called, so click on the external area cannot be dismiss
}
});
// If you do not set the PopupWindow background, both the external region click or Back keys are not dismiss box
// I think there is a bug API
popupWindow.setBackgroundDrawable(getResources().getDrawable(
R.drawable.selectmenu_bg_downward));
// After setting the parameter to show
popupWindow.showAsDropDown(view);
}
}

Get error value of LinearLayout Height? The value is doubled. Android 4.2.2

I try to get LinearLayout Height on Activity, but I get the height value is doubled. PS:height is 60 but I get 120.
Someone can help?
Layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pull_to_refresh_head1"
android:layout_width="200dip"
android:layout_height="60dip"
android:layout_centerInParent="true"
android:orientation="horizontal" >
<TextView
android:id="#+id/t1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hello_world" />
</LinearLayout>
Java code:
package com.example;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.LinearLayout;
import android.widget.TextView;
public class GdomRefreshableActivity extends Activity {
private LinearLayout l1;
TextView t1;
#Override
//create
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gdom_refreshable);
l1=(LinearLayout)findViewById(R.id.pull_to_refresh_head1);
t1=(TextView)findViewById(R.id.t1);
ViewTreeObserver vto2 = l1.getViewTreeObserver();
vto2.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
l1.getViewTreeObserver().removeGlobalOnLayoutListener(this);
int h = l1.getHeight();
int ht = t1.getHeight();
Log.d("GdomRefreshableActivity2",String.valueOf(h));
}
});
}
}

Image Buttons lose images on Orientation Change

i have a few pages realized with a PagerAdapter and one layout-file in the folder "res/layout" and one layout-file in "res/layout-land". Each Layout has two ImageButtons, where:
imageButton1 in portrait has the same ID as the imageButton1 in landscape.
imageButton2 in portrait has the same ID as the imageButton2 in landscape.
I have assigned an onClickListener to imageButton1 button which:
takes the images from the ImageButtons
rescales the Images to fit/fill the ImageButtons
and reassigns the rescaled pictures to the ImageButtons.
But whenever i change the orientation in my emulator the images/pictures in these buttons get lost, or change to the images specified in the layout-file originally and dont refresh to the pictures i assigned to the buttons programmatically.
PS (for example): i assigned in onCreate a listener to button1 and that listener works for this button both in portrait and also in landscape. So these are not seperated buttons!!!!!!
Question: how can i make it work that the images are not lost when changing orientation?
thx for any help in advance!
here is my code:
layout-portrait file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/table1"
android:background="#drawable/shape"
android:gravity="center"
>
<!-- Row 1-->
<LinearLayout
android:layout_width="fill_parent"
android:orientation="horizontal"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center">
<LinearLayout
android:id="#+id/layout11"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:id="#+id/layout12"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
layout-landscape file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/table1"
android:background="#drawable/shape"
android:gravity="center"
>
<LinearLayout
android:layout_width="fill_parent"
android:orientation="horizontal"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center">
<LinearLayout
android:id="#+id/layout11"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:id="#+id/layout12"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
MyPageAdapter-class:
package com.example.Pagercheck;
import java.util.List;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
public class MyPageAdapter extends PagerAdapter
{
List<View> pages = null;
public MyPageAdapter(List<View> pages)
{
this.pages = pages;
}
#Override
public int getCount()
{
return pages.size();
}
#Override
public boolean isViewFromObject(View view, Object object)
{
return view.equals(object);
}
#Override
public Object instantiateItem(View collection, int position)
{
View v = pages.get(position);
((ViewPager) collection).addView(v, 0);
return v;
}
#Override
public void destroyItem(View collection, int position, Object view)
{
((ViewPager) collection).removeView((View) view);
}
#Override
public void finishUpdate(View arg0) {
}
#Override
public void startUpdate(View arg0) {
}
}
My MainActivity-Class:
package com.example.Pagercheck;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.SimpleOnPageChangeListener;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewGroup.MarginLayoutParams;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener
{
private List<View> pages;
private MyPageAdapter pagerAdapter;
private ViewPager viewPager;
private static Context context; //member zum speichern fÃ¼r context fÃ¼r andere Klassen
public static Context getContext(){ return context;} //context fÃ¼r andere Klassen zugÃ¤nglich machen
//private Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState)
{
context = this; //context in member speichern
LayoutInflater inflater = LayoutInflater.from(this);
pages = new ArrayList<View>();
View page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
pagerAdapter = new MyPageAdapter(pages);
viewPager = new ViewPager(this);
viewPager.setAdapter(pagerAdapter);
viewPager.setCurrentItem(0);
setContentView(viewPager);
for (int i_page=0;i_page<pages.size();i_page++)
{
//Drag-Listener auf ImageButtons:
pages.get(i_page).findViewById(R.id.imageButton1).setOnLongClickListener(new MyLongClickListener());
pages.get(i_page).findViewById(R.id.imageButton1).setOnClickListener(this);
pages.get(i_page).findViewById(R.id.imageButton2).setOnLongClickListener(new MyLongClickListener());
//Drag-Listener auf LinearLayouts:
pages.get(i_page).findViewById(R.id.layout11).setOnDragListener(new MyDragListener());
pages.get(i_page).findViewById(R.id.layout12).setOnDragListener(new MyDragListener());
}
super.onCreate(savedInstanceState);
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onWindowFocusChanged(boolean hasFocus)
{
// TODO Auto-generated method stub
super.onWindowFocusChanged(hasFocus);
//NOTE FOR STACKOVERFLOW
//I COMMENTED THIS OUT SO THAT MY IMAGE BUTTONS DOESNT GET LOST AFTER PAGE 2 SO THAT I CAN TEST MY APP PROPERLY WITH ONCLICK:
// Bitmap bmp_stift=BitmapFactory.decodeResource(getContext().getResources(), R.drawable.stift);
//
// for (int i_page=0;i_page<pages.size();i_page++)
// {
//
// ((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1)).setImageBitmap(bmp_stift);
// scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1));
// scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton2));
//
//
// }
}
public void scalePictureToFitButtom(ImageButton img_btn)
{
int width=img_btn.getWidth();
int height=img_btn.getHeight();
BitmapDrawable draw=(BitmapDrawable)img_btn.getDrawable();
Bitmap bmp = ((BitmapDrawable)draw).getBitmap();
Bitmap resized = Bitmap.createScaledBitmap(bmp, width-40, height-40, true); //bissle schmaler und niedriger damit man noch den Klickeffekt sieht
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
params.width=width;
params.height=height;
img_btn.setImageBitmap(resized);
img_btn.setLayoutParams(params);
pagerAdapter.notifyDataSetChanged();
}
#Override
public void onClick(View view)
{
Bitmap bmp_stift=BitmapFactory.decodeResource(getContext().getResources(), R.drawable.stift);
for (int i_page=0;i_page<pages.size();i_page++)
{
((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1)).setImageBitmap(bmp_stift);
scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1));
scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton2));
}
Toast einToast = Toast.makeText(view.getContext(), "clicked", Toast.LENGTH_SHORT);
einToast.show();
}
}

UPDATE:
i did it like this now (example for saving and restoring Bitmap of imageButton1):
#Override
protected void onSaveInstanceState(Bundle outState)
{
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
BitmapDrawable draw=(BitmapDrawable)((ImageButton)pages.get(0).findViewById(R.id.imageButton1)).getDrawable();
Bitmap bmp = ((BitmapDrawable)draw).getBitmap();
outState.putParcelable("IMG_OF_BUTTON1", bmp);
super.onSaveInstanceState(outState);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
// TODO Auto-generated method stub
super.onRestoreInstanceState(savedInstanceState);
Bitmap bmp= savedInstanceState.getParcelable("IMG_OF_BUTTON1");
((ImageButton)pages.get(0).findViewById(R.id.imageButton1)).setImageBitmap(bmp);
}

ImageButtons on Pages-Problems (Android)

i have a few pages realized with a PagerAdapter and within that some LinearLayouts, which have some ImageButtons.
My Issue:
i want to get the imagebuttons from all the layouts from my pages on app-start, get the size of them and to resize the images to fill the imagebuttons. Gettting the images and rescaling them works fine, BUT if i do this at the function "onWindowFocusChanged" it only works on the first two pages. The ImageButtons on the third page until the last page are just gone. I assume the problem is that either these pages OR the linear-layouts OR the ImageButtons on these pages are not drawn yet so that it doesnt work.
To prove this i assigned a on-click listener to one of these buttons and do my calculation then and not already at onWindowFocusChanged. This has the same effect, BUT if i click the button after i have wiped over all pages it works on all pages.
Question: how can i make it work on startup for all pages OR without having to wipe over all pages first?
thx for any help in advance!
here is my code:
layout-portrait file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/table1"
android:background="#drawable/shape"
android:gravity="center"
>
<!-- Row 1-->
<LinearLayout
android:layout_width="fill_parent"
android:orientation="horizontal"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center">
<LinearLayout
android:id="#+id/layout11"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:id="#+id/layout12"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
layout-landscape file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/table1"
android:background="#drawable/shape"
android:gravity="center"
>
<LinearLayout
android:layout_width="fill_parent"
android:orientation="horizontal"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center">
<LinearLayout
android:id="#+id/layout11"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
<LinearLayout
android:id="#+id/layout12"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/shape" >
<ImageButton
android:id="#+id/imageButton2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/ic_launcher" />
</LinearLayout>
</LinearLayout>
MyPageAdapter-class:
package com.example.Pagercheck;
import java.util.List;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
public class MyPageAdapter extends PagerAdapter
{
List<View> pages = null;
public MyPageAdapter(List<View> pages)
{
this.pages = pages;
}
#Override
public int getCount()
{
return pages.size();
}
#Override
public boolean isViewFromObject(View view, Object object)
{
return view.equals(object);
}
#Override
public Object instantiateItem(View collection, int position)
{
View v = pages.get(position);
((ViewPager) collection).addView(v, 0);
return v;
}
#Override
public void destroyItem(View collection, int position, Object view)
{
((ViewPager) collection).removeView((View) view);
}
#Override
public void finishUpdate(View arg0) {
}
#Override
public void startUpdate(View arg0) {
}
}
My MainActivity-Class:
package com.example.Pagercheck;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.SimpleOnPageChangeListener;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewGroup.MarginLayoutParams;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener
{
private List<View> pages;
private MyPageAdapter pagerAdapter;
private ViewPager viewPager;
private static Context context; //member zum speichern fÃ¼r context fÃ¼r andere Klassen
public static Context getContext(){ return context;} //context fÃ¼r andere Klassen zugÃ¤nglich machen
//private Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState)
{
context = this; //context in member speichern
LayoutInflater inflater = LayoutInflater.from(this);
pages = new ArrayList<View>();
View page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
page = inflater.inflate(R.layout.page, null);
pages.add(page);
pagerAdapter = new MyPageAdapter(pages);
viewPager = new ViewPager(this);
viewPager.setAdapter(pagerAdapter);
viewPager.setCurrentItem(0);
setContentView(viewPager);
for (int i_page=0;i_page<pages.size();i_page++)
{
//Drag-Listener auf ImageButtons:
pages.get(i_page).findViewById(R.id.imageButton1).setOnLongClickListener(new MyLongClickListener());
pages.get(i_page).findViewById(R.id.imageButton1).setOnClickListener(this);
pages.get(i_page).findViewById(R.id.imageButton2).setOnLongClickListener(new MyLongClickListener());
//Drag-Listener auf LinearLayouts:
pages.get(i_page).findViewById(R.id.layout11).setOnDragListener(new MyDragListener());
pages.get(i_page).findViewById(R.id.layout12).setOnDragListener(new MyDragListener());
}
super.onCreate(savedInstanceState);
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onWindowFocusChanged(boolean hasFocus)
{
// TODO Auto-generated method stub
super.onWindowFocusChanged(hasFocus);
//NOTE FOR STACKOVERFLOW
//I COMMENTED THIS OUT SO THAT MY IMAGE BUTTONS DOESNT GET LOST AFTER PAGE 2 SO THAT I CAN TEST MY APP PROPERLY WITH ONCLICK:
// Bitmap bmp_stift=BitmapFactory.decodeResource(getContext().getResources(), R.drawable.stift);
//
// for (int i_page=0;i_page<pages.size();i_page++)
// {
//
// ((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1)).setImageBitmap(bmp_stift);
// scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1));
// scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton2));
//
//
// }
}
public void scalePictureToFitButtom(ImageButton img_btn)
{
int width=img_btn.getWidth();
int height=img_btn.getHeight();
BitmapDrawable draw=(BitmapDrawable)img_btn.getDrawable();
Bitmap bmp = ((BitmapDrawable)draw).getBitmap();
Bitmap resized = Bitmap.createScaledBitmap(bmp, width-40, height-40, true); //bissle schmaler und niedriger damit man noch den Klickeffekt sieht
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
params.width=width;
params.height=height;
img_btn.setImageBitmap(resized);
img_btn.setLayoutParams(params);
pagerAdapter.notifyDataSetChanged();
}
#Override
public void onClick(View view)
{
Bitmap bmp_stift=BitmapFactory.decodeResource(getContext().getResources(), R.drawable.stift);
for (int i_page=0;i_page<pages.size();i_page++)
{
((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1)).setImageBitmap(bmp_stift);
scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton1));
scalePictureToFitButtom((ImageButton)pages.get(i_page).findViewById(R.id.imageButton2));
}
Toast einToast = Toast.makeText(view.getContext(), "clicked", Toast.LENGTH_SHORT);
einToast.show();
}
}

Perform a drag operation from a PopupWindow in Android

I want to "Drag and Drop" items from a PopupWindow into the underlying View. The problem now is, when i dismiss the PopupWindow after a long click on an item, the underlying view does not receive any MotionEvents. This problem basically breaks down to delegating MotionEvents between views like in the drag-and-drop-between-views-issue as discussed here. A solution was proposed here but in my case this is not an option. I can't use an overlay view that lies on top of the PopupWindow, can I?
The code below is a simplified version of my problem. I basically have one button that brings up the PopupWindow. On a long click on that PopupWindow it gets dismissed. Now the MotionEvents should be send to the underlying view again, but that does not happen (as you can see in the log output).
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.PopupWindow;
public class PopupWindowDragDropActivity extends Activity implements OnClickListener, OnTouchListener {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.b1).setOnClickListener(this);
findViewById(R.id.contents).setOnTouchListener(this);
}
#Override
public void onClick(View v) {
final PopupWindow p = new PopupWindow(this);
p.setContentView(new Button(this));
p.setHeight(100);
p.setWidth(100);
p.showAtLocation(findViewById(R.id.contents), Gravity.CENTER, 0, 0);
p.getContentView().setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
v.post(new Runnable() {
#Override
public void run() {
p.dismiss();
}
});
return false;
}
});
}
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.d("", "Action: " + event);
return true;
}
}
Here is the simple XML layout I use:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/contents" >
<Button
android:id="#+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Android Bitmap.getPixel() Is Annoyingly Inaccuracte - android

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