我遇到了一个问题,现在我被困在很长时间,我希望你们能帮助我。 我得到了一段代码,可以打开图像,更改饱和度(使用seekbar)。那么我想保存更改后的图像。但是最后一部分并不适合。使用此代码,我可以更改饱和度,然后保存更改后的位图,但它将ImageView的大小保存为位图(480 x 517),但是他确实应用了饱和度更改(这很好)。无法保存已更改的位图(已更改饱和度)
ColorMatrix cm = new ColorMatrix();
System.out.println(progress2);
cm.setSaturation(progress2);
ColorFilter = new ColorMatrixColorFilter(cm);
bitmap_image = BitmapFactory.decodeFile(filePath);
ImageView img = (ImageView) findViewById(R.id.gallery1);
img.setColorFilter(ColorFilter);
img.setImageBitmap(bitmap_image);
img.buildDrawingCache(true);
img.setDrawingCacheEnabled(true);
Bitmap b = img.getDrawingCache();
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap_image, 0, 0, 3264, 2448);
File file = new File(sdcard+"/DCIM/Camera/image3.jpg");
try {
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
**b.compress(CompressFormat.JPEG, 100, ostream);**
ostream.close();
} catch (Exception e)
{
System.out.println("WRITING HAS FAILED");
e.printStackTrace();
}
而下一个代码,我也可以改变饱和度,但是当我保存位图时,它确实保存了原始高度和宽度(3264 x 2448)的位图,但不保存饱和度更改。
ColorMatrix cm = new ColorMatrix();
System.out.println(progress2);
cm.setSaturation(progress2);
ColorFilter = new ColorMatrixColorFilter(cm);
bitmap_image = BitmapFactory.decodeFile(filePath);
ImageView img = (ImageView) findViewById(R.id.gallery1);
img.setColorFilter(ColorFilter);
img.setImageBitmap(bitmap_image);
img.buildDrawingCache(true);
img.setDrawingCacheEnabled(true);
Bitmap b = img.getDrawingCache();
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap_image, 0, 0, 3264, 2448);
File file = new File(sdcard+"/DCIM/Camera/image3.jpg");
try {
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
**resizedBitmap.compress(CompressFormat.JPEG, 100, ostream);**
ostream.close();
} catch (Exception e)
{
System.out.println("WRITING HAS FAILED");
e.printStackTrace();
}
但我需要的是可以节省的饱和度变化(代码1),并保持原来的宽度 - 高度(代码2),但不知何故,我似乎并没有得到这些代码2一起工作。
请把我放在好的方向。代码可能是一团糟,尝试了很多东西,结构并没有越来越好。
**code** that is the line that changed.
编辑: 当我这样做:(瑞奇的建议)
Bitmap resizedBitmap = Bitmap.createBitmap(b, 0, 0, 3264, 2448);
我得到这个错误日志:
03-09 15:03:02.880: E/AndroidRuntime(847): FATAL EXCEPTION: main
03-09 15:03:02.880: E/AndroidRuntime(847): java.lang.NullPointerException
03-09 15:03:02.880: E/AndroidRuntime(847): at android.graphics.Bitmap.createBitmap(Bitmap.java:409)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.graphics.Bitmap.createBitmap(Bitmap.java:383)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.dlv.groenmeter.GroenMeterActivity$13.onStopTrackingTouch(GroenMeterActivity.java:937)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.widget.SeekBar.onStopTrackingTouch(SeekBar.java:115)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.widget.AbsSeekBar.onTouchEvent(AbsSeekBar.java:303)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.View.dispatchTouchEvent(View.java:3938)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:942)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:942)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:942)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:942)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1730)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1142)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.app.Activity.dispatchTouchEvent(Activity.java:2102)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1714)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2218)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.view.ViewRoot.handleMessage(ViewRoot.java:1889)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.os.Handler.dispatchMessage(Handler.java:99)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.os.Looper.loop(Looper.java:123)
03-09 15:03:02.880: E/AndroidRuntime(847): at android.app.ActivityThread.main(ActivityThread.java:3691)
03-09 15:03:02.880: E/AndroidRuntime(847): at java.lang.reflect.Method.invokeNative(Native Method)
03-09 15:03:02.880: E/AndroidRuntime(847): at java.lang.reflect.Method.invoke(Method.java:507)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
03-09 15:03:02.880: E/AndroidRuntime(847): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
03-09 15:03:02.880: E/AndroidRuntime(847): at dalvik.system.NativeStart.main(Native Method)
七号线(标有**“代码'**),这是唯一的改变,其余的代码是相同的IDD,但它应该给我更好的视角。 – Bigflow 2012-03-09 14:01:45
我现在看到了,thnx – Caner 2012-03-09 14:11:57