CODEWITHSUNDEEP
androidbitmapimageviewandroid-camera2
mafioso
mafioso

Reputation: 1632

Android bitmap does either work in landscape or portrait

I want to show an Image in an ImageView.

I do it this way: 

    File externalDirectory = Environment.getExternalStorageDirectory();

    File directory = new File (externalDirectory.getAbsolutePath());
    File file = new File(directory, "pic.jpg"); //or any other format supported

    FileInputStream streamIn = null;
    try {
        streamIn = new FileInputStream(file);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    bitmap = BitmapFactory.decodeStream(streamIn); //This gets the image

    try {
        streamIn.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

    imageView = (ImageView) findViewById(R.id.image_view);
    imageView.setImageBitmap(bitmap);

The problem is that if I start the application in landscape and rotate the device afterwards, the application crashes.

Xml code:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffffff">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/image_view"/>

</FrameLayout>

The next problem is that the picture isn't shown in fullscreen.
Do you have any suggestions to solve these issues?

LOGCAT WHEN ROTATING THE DEVICE

01-03 11:23:45.810 25429-25429/com.kamera E/AndroidRuntime: FATAL EXCEPTION: main
                                                                   Process: com.kamera, PID: 25429
                                                                   java.lang.OutOfMemoryError: Failed to allocate a 80683020 byte allocation with 16765280 free bytes and 63MB until OOM
                                                                       at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
                                                                       at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
                                                                       at android.graphics.BitmapFactory.decodeStreamInternal(BitmapFactory.java:635)
                                                                       at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:611)
                                                                       at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:649)
                                                                       at com.kamera.PhotoActivity.loadImageFromExternalStorage(PhotoActivity.java:47)
                                                                       at com.kamera.PhotoActivity.onCreate(PhotoActivity.java:29)
                                                                       at android.app.Activity.performCreate(Activity.java:6248)
                                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1125)
                                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2437)
                                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2544)
                                                                       at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4398)
                                                                       at android.app.ActivityThread.access$1000(ActivityThread.java:150)
                                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1400)
                                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                       at android.os.Looper.loop(Looper.java:168)
                                                                       at android.app.ActivityThread.main(ActivityThread.java:5845)
                                                                       at java.lang.reflect.Method.invoke(Native Method)
                                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)
                                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)

Upvotes: 0

Views: 508

Answers (3)

Pushpendra
Pushpendra

Reputation: 2819

Resize bitmap(Take care you don't lose too much quality. Change the value of sample size according to need)

BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap bitmap = BitmapFactory.decodeStream(stream, null, options);

and put android:allowBackup="true" in your manifest.

<application
    android:allowBackup="true"
    android:hardwareAccelerated="false"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">

for full screen image use:

android:scaleType="fitXY"

Upvotes: 1

Jayamurugan
Jayamurugan

Reputation: 532

  1. To avoid out of memory issue, Refer the below link for scaling the bitmap https://developer.android.com/training/displaying-bitmaps/load-bitmap.html.

  2. To display the image in full screen add " android:scaleType="fitXY" " in your xml file inside image tag.

Upvotes: 1

Priyavrat
Priyavrat

Reputation: 461

Every time you rotate the device then O.S. recreates the activity and all it's objects are created/ initialized. Suppose you started the application and your device is in portrait mode, Your bitmap is loaded and processed at memory. When you rotate the device, the bitmap is again decoded to memory from your storage.

Solution :- 1. Keep the bitmap reference global. 2. At savedInstanceState() or onCreate() check for bitmap is processed or not. If processed then need not to process it again.

Example. 

public void onCreate(Bundle savedInstanceState) {
        if(null != savedInstanceState && null != bitmap) {
         // Bitmap is processed already.
}
else {
        // Bitmap is not processed. Need to process it. 
}
}

Or Check the same at onSaveInstanceState() method.

Upvotes: 0

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