OutofMemoryError ImageView

问题:

I have a problem with imageview, i have 77 picture jpg and have 126 quote text, just simple app i want is i want show all quote with background picture and i use viewflipper so when i swipe left/right get into next quote. I give you my code that i use now. Hope that anyone can help me.. Really wasting my time to fix it. My picture : 320x480.

                    vf = (ViewFlipper) findViewById(R.id.pages);
            for (i = 0; i<totalphrase;i++) {
                Log.i("ID",""+i);
                var = arrayphrase.get(i);

                //iv.setBackgroundColor(Color.rgb((int)Math.ceil(Math.random()*100), (int)Math.ceil(Math.random()*100), (int)Math.ceil(Math.random()*100)));
                FrameLayout a = new FrameLayout(this);
                FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.FILL_PARENT, FrameLayout.LayoutParams.FILL_PARENT); 
                a.setLayoutParams(lp);

                b = new ImageView(this);
                LinearLayout.LayoutParams lp1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT);
                FrameLayout.LayoutParams lp2= new FrameLayout.LayoutParams(740, 800,Gravity.CENTER);
                //b.setBackgroundColor(Color.rgb((int)Math.ceil(Math.random()*100), (int)Math.ceil(Math.random()*100), (int)Math.ceil(Math.random()*100)));

   // i got outofmemoryerror with this, Imgid[] -> my picture in drawable there ara 77picture
    b.setBackgroundResource(Imgid[(int)(Math.random()*Imgid.length)]);
    // -- ERROR --  outofmemory             
                b.setLayoutParams(lp1);
                a.addView(b);

                c = new ScrollView(this);
                c.setLayoutParams(lp2);
                //c.setBackgroundColor(Color.CYAN);
                c.setBackgroundColor(Color.argb(65, 53, 52, 52));
                //idsc = c.getId();
                a.addView(c);

                LinearLayout d = new LinearLayout(this);
                d.setLayoutParams(lp1);
                //d.setBackgroundResource(R.drawable.background0);
                c.addView(d);


                TextView e = new TextView(this);
                LinearLayout.LayoutParams lp3 = new LinearLayout.LayoutParams(730, 800);
                e.setLayoutParams(lp1);
                e.setText(var.phraseKey);

                d.addView(e);


                vf.addView(a);

            }

        }

The result that i want like this : example that i want to build in android

and this is xml

        <?xml version="1.0" encoding="utf-8"?>

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

        android:orientation="vertical"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:id="@+id/fl1"
        >


        <ViewFlipper

            android:id="@+id/pages"

            android:layout_width="fill_parent"

            android:layout_height="fill_parent" 

            android:background="@android:color/transparent"

            android:layout_gravity="top"
            >
        </ViewFlipper>


    </FrameLayout>

回答1:

I recommend to create an 2 dim array containing the comment and the path to the picture. For the pictures, create a thumbnail. I am doing it with this code

BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 4;
pic = BitmapFactory.decodeFile(strPicPath, options);
image.setImageBitmap(pic);

I am not sure if image gets smaller with bigger inSampleSize... You'll have to try

image is in XML:

<ImageView
                android:id="@+id/imagePreview"
                android:layout_width="134dp"
                android:layout_height="146dp"
                android:layout_weight="0.36"
                android:onClick="imageClick" />
</LinearLayout>

I use the on click method to open the image in the gallery but you can do zoom or what you want.

回答2:

To fix OutOfMemory you should do something like that:

this is a code i ref it's work good check it

BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap preview_bitmap=BitmapFactory.decodeStream(is,null,options);

This inSampleSize option reduces memory consumption.

Here's a complete method. First it reads image size without decoding the content itself. Then it finds the best inSampleSize value, it should be a power of 2. And finally the image is decoded.

//decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File f){
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f),null,o);

        //The new size we want to scale to
        final int REQUIRED_SIZE=70;

        //Find the correct scale value. It should be the power of 2.
        int scale=1;
        while(o.outWidth/scale/2>=REQUIRED_SIZE && o.outHeight/scale/2>=REQUIRED_SIZE)
            scale*=2;

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize=scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {}
    return null;
}

回答3:

Try putting this code before changing the image:

imageView.getDrawable().getBitmap().recycle();