在多个imageViews中将图像设置为位图

时间：2013-11-14 04:45:18

标签： android android-intent bitmap bitmapimage

我有两个imageView，当用户点击一个按钮时，它会将它们发送到图库以选择图像。然后他们选择的图像显示在imageView中，然后他们可以根据他们的设置做两件事之一： 1）背景 2）图标

我的背景工作正常，但现在我试图包含设置图标的选项。我在这里有图标的imageView（在widget.xml中）：

 <ImageView
    android:id="@+id/bwidgetOpen"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/ic_launcher"
    android:contentDescription="@string/desc"/>

这是我的两个编码类： Personalize.java：

package com.example.awesomefilebuilderwidget;
IMPORTS
public class Personalize extends Activity implements View.OnClickListener {
Button button;
ImageView image;
ImageView image2;
Button btnChangeImage;
Button btnChangeImageForIcon;
Button btnSetBackground;
private static final int SELECT_PICTURE = 1;
private static final int SELECT_PICTURE_2 = 2;
private String  selectedImagePath;
Bitmap background;
Bitmap b2;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.personalize);
Log.d("Personalize", "OnCreate called");

image = (ImageView) findViewById(R.id.imageView1);
image2 = (ImageView) findViewById(R.id.imageView2Icon);

Button btnChangeImage = (Button) findViewById(R.id.btnChangeImage);    
btnChangeImage.setOnClickListener(this);

Button btnChangeImageForIcon = (Button) findViewById(R.id.btnChangeImageForIcon); 
btnChangeImageForIcon.setOnClickListener(this);

Button btnSetBackground = (Button) findViewById(R.id.btnSetBackground);
btnSetBackground.setOnClickListener(this);

Button btnLinkToFeedback = (Button) findViewById(R.id.btnLinkToFeedback);

Button btnSetIcon = (Button) findViewById(R.id.btnSetIcon);
btnSetIcon.setOnClickListener(this);


}

@Override 
public void onClick(View v) { 
switch (v.getId()) { 
case R.id.btnChangeImage: 
launchImageChooser(); 
break; 
case R.id.btnChangeImageForIcon: 
launchImageChooser(); 
break; 
case R.id.btnSetBackground: 
setBackgroundImageInDragAndDrop(); 
break; 
case R.id.btnSetIcon:
setIconImageInWidget();
break;
} 
} 

private void setIconImageInWidget() {
// TODO Auto-generated method stub
Log.d("Personalize", "setIconImageInWidget() called");
Intent i = getIntent();
//Convert bitmap to byte array to send back to activity
// See: http://stackoverflow.com/questions/11010386/send-bitmap-using-intent-android
scaleDownBitmapForIcon(b2, 500, this.getBaseContext());
Log.d("Personalize", "Scale Bitmap Chosen For Icon");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
b2.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[]byteArray = stream.toByteArray();

i.putExtra("myIconBitmap", byteArray);
setResult(RESULT_OK, i);
finish();
}


public static Bitmap scaleDownBitmap(Bitmap background, int newHeight, Context c) {

final float densityMultiplier = c.getResources().getDisplayMetrics().density;

int h= (int) (500*densityMultiplier);
int w= (int) (h * background.getWidth()/((double) background.getHeight()));

background=Bitmap.createScaledBitmap(background, w, h, true);
// TO SOLVE LOOK AT HERE:http://stackoverflow.com/questions/15517176/passing-bitmap-to-other-activity-getting-message-on-logcat-failed-binder-transac
return background;
}

public static Bitmap scaleDownBitmapForIcon(Bitmap b2, int newHeight, Context c) {

final float densityMultiplier = c.getResources().getDisplayMetrics().density;

int h= (int) (500*densityMultiplier);
int w= (int) (h * b2.getWidth()/((double) b2.getHeight()));

b2=Bitmap.createScaledBitmap(b2, w, h, true);
// TO SOLVE LOOK AT HERE:http://stackoverflow.com/questions/15517176/passing-bitmap-to-other-activity-getting-message-on-logcat-failed-binder-transac
return b2;
}

private void setBackgroundImageInDragAndDrop() {
Log.d("Personalize", "setBackgroundImageInDragAndDrop() called");
Intent i = getIntent();
//Convert bitmap to byte array to send back to activity
// See: http://stackoverflow.com/questions/11010386/send-bitmap-using-intent-android
scaleDownBitmap(background, 500, this.getBaseContext());
Log.d("Personalize", "Scale Bitmap Chosen");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
background.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[]byteArray = stream.toByteArray();

i.putExtra("myBackgroundBitmap", byteArray);
setResult(RESULT_OK, i);
finish();
}

private void launchImageChooser() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(intent, SELECT_PICTURE);
startActivityForResult(intent, SELECT_PICTURE_2);
Log.d("Personalize", "launchImageChooser called");
}

public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
int column_index = cursor
        .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String imagePath = cursor.getString(column_index);
if(cursor != null) {
cursor.close();
}
return imagePath;
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{

if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE)
{
    Uri selectedImageUri = data.getData();
    selectedImagePath = getPath(selectedImageUri);
    background = getAndDecodeImage(selectedImagePath);
    if(background != null){
        image.setImageBitmap(background); 
    }           
} else if (requestCode == SELECT_PICTURE_2)
{
    Uri selectedImageUri = data.getData();
    selectedImagePath = getPath(selectedImageUri);
    Bitmap b2 = getAndDecodeImage(selectedImagePath);
    if(b2 != null){
        image2.setImageBitmap(b2);
    }
}    
}
}

private Bitmap getAndDecodeImage(String  selectedImagePath){
try {
    Log.d("Personalize", "selectedImagePath: " + selectedImagePath);
    FileInputStream fileis=new FileInputStream(selectedImagePath);
    BufferedInputStream bufferedstream=new BufferedInputStream(fileis);
    byte[] bMapArray= new byte[bufferedstream.available()];
    bufferedstream.read(bMapArray);
    Bitmap bMap = BitmapFactory.decodeByteArray(bMapArray, 0, bMapArray.length);

    if (fileis != null) 
    {
        fileis.close();
    }
    if (bufferedstream != null) 
    {
        bufferedstream.close();
    }
    return bMap;
} catch (FileNotFoundException e) {                 
    e.printStackTrace();
} catch (IOException e) {                   
    e.printStackTrace();
}   
return null;
}


public boolean saveImageToInternalStorage(Bitmap image) {
   try {
      FileOutputStream fos = this.openFileOutput("desiredFilename.png", Context.MODE_PRIVATE);
      image.compress(Bitmap.CompressFormat.PNG, 100, fos);
      fos.close();   
      return true;
   } catch (Exception e) {
   return false;
   }
}

}

然后Drag_and_Drop.java：

package com.example.awesomefilebuilderwidget;

IMPORTS

public class Drag_and_Drop_App extends Activity {
private static final int SET_BACKGROUND = 10;
private static final int SET_ICON = 20;

private ListView mListAppInfo;
// Search EditText
EditText inputSearch;
public AppInfoAdapter adapter;
final SwipeDetector swipeDetector = new SwipeDetector();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // set layout for the main screen
    setContentView(R.layout.drag_and_drop_app);
    Log.d("D&D", "onCreate called");
}
public Bitmap getThumbnail(String filename) { 
     Bitmap thumbnail = null; 
     try { 
     File filePath = this.getFileStreamPath(filename); 
     FileInputStream fi = new FileInputStream(filePath); 
     thumbnail = BitmapFactory.decodeStream(fi); 
     } catch (Exception ex) { 
     Log.e("getThumbnail() on internal storage", ex.getMessage()); 
     } 
     return thumbnail; 
     } 

     @Override 
     protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     Log.i("Drag_and_Drop_App", "requestCode: " + requestCode + ", resultCode: " + resultCode); 
     if(requestCode == SET_BACKGROUND && resultCode == RESULT_OK){ 
     byte[] byteArray = data.getByteArrayExtra("myBackgroundBitmap"); 
     Bitmap myBackground = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length); 
     setBackgroundImage(myBackground); 
     } 
     else if(requestCode == SET_ICON && resultCode == RESULT_OK){
         byte[] byteArray = data.getByteArrayExtra("myIconBitmap"); 
         Bitmap myIcon = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length); 
         setBackgroundImageForIcon(myIcon); 
     }
     } 


     @SuppressLint("NewApi") 
     private void setBackgroundImage(Bitmap bitmap) { 
     RelativeLayout yourBackgroundView = (RelativeLayout) findViewById(R.id.rl_drag_and_drop_app); 

     Drawable d = new BitmapDrawable(getResources(), bitmap); 

     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { 
     yourBackgroundView.setBackgroundDrawable(d); 
     } else { 
     yourBackgroundView.setBackground(d); 
     } 
     } 

     @SuppressLint("NewApi") 
     private void setBackgroundImageForIcon(Bitmap bitmap) { 
     LinearLayout yourIconView = (LinearLayout) findViewById(R.id.widgetXMl); 

     Drawable dq = new BitmapDrawable(getResources(), bitmap); 

     if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { 
     yourIconView.setBackgroundDrawable(dq); 
     } else { 
     yourIconView.setBackground(dq); 
     } 
     } 

     }

我现在遇到的问题是，当我点击按钮选择图标图像时，我会去图库并选择一张图片，然后重新加载图库并让我选择另一张图片（最终会转到另一个图像视图）。我该如何解决这个问题？

这是我的Personalize.xml：

<?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:orientation="vertical" >

<TextView
    android:id="@+id/personalizetextView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/customize" 
    android:textSize="30sp"
    android:gravity="center"
    android:layout_marginTop="20dip"/>

<TextView 
    android:id="@+id/personalizetextviewChangeBackground"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/customizebackground"
    android:gravity="center" />

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"  
    android:maxWidth="100dp"  
    android:maxHeight="100dp"  
    android:scaleType="fitCenter"  
    android:contentDescription="@string/descForBackground"

    />

<Button
    android:id="@+id/btnChangeImage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/change_background" />

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="@string/set_background" 
    android:id="@+id/btnSetBackground" />

 <TextView 
    android:id="@+id/personalizetextviewChangeIcon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/change_icon"
    android:gravity="center" />

<ImageView
    android:id="@+id/imageView2Icon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"  
    android:maxWidth="100dp"  
    android:maxHeight="100dp"  
    android:scaleType="fitCenter"
    android:contentDescription="@string/descForIcon"
     />

<Button
    android:id="@+id/btnChangeImageForIcon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/change_icon" />

<Button 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="@string/set_icon" 
    android:id="@+id/btnSetIcon" />

  <Button
        android:id="@+id/btnLinkToFeedback"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dip"
        android:background="@null"
        android:text="@string/Send_Feedback"
        android:textColor="#21dbd4"
        android:textStyle="bold" />

</LinearLayout>

另外，有没有办法可以清理我的代码，这样我就不会重复那么多了？

我知道这是一个需要查看的代码，但如果有人可以的话，我会真的感到满意。

谢谢！

1 个答案:

答案 0 :(得分：0)

it reloads the gallery and makes me choose another image

因为您两次致电startActivityForResult 

startActivityForResult(intent, SELECT_PICTURE);
startActivityForResult(intent, SELECT_PICTURE_2);

在launchImageChooser（）中。更改此代码。

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