public class MainActivity extends the Activity {
Public static final ints TAKE_PHOTO=1; 
Private ImageView picture; 
Private Uri ImageUri; 
Private Button takePhoto; 
@ Override 
Protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 
Picture=(ImageView) the findViewById (R.i d.p icture); 
TakePhoto=(Button) the findViewById (R.i which ake_photo); 
TakePhoto. SetOnClickListener (new View. An OnClickListener () {
@ Override 
Public void onClick (View v) {
//create the File object, used to store the pictures after the picture 
The File outputImage=new File (getExternalCacheDir (), "outputImage. JPG"); 
Try {
{if (outputImage. The exists ()) 
OutputImage. Delete (); 
} 
OutputImage. CreateNewFile (); 
} the catch (IOException e) {
e.printStackTrace(); 
} 
If (Build) VERSION) SDK_INT & gt; 24)={
ImageUri=FileProvider. GetUriForFile (MainActivity. This, 
"Com. Example. Camerralbumtest. Fileprovider", outputImage); 
} else {
ImageUri=Uri. FromFile (outputImage); 
} 
//start the camera application 
Intent Intent=new Intent (" android. Media. Action. IMAGE_CAPTURE "); 
Intent. PutExtra (MediaStore. EXTRA_OUTPUT ImageUri); 
StartActivityForResult (intent, TAKE_PHOTO); 
} 
}); 
} 

@ Override 
Protected void onActivityResult (int requestCode, int the resultCode, Intent data) {
The switch (requestCode) {
Case TAKE_PHOTO: 
If (the resultCode==RESULT_OK) {
Try {
//to display images 
Bitmap Bitmap=BitmapFactory. DecodeStream (getContentResolver () openInputStream (ImageUri)); 

Try {
ArrayList PicturePixel=BitmapUtil. GetPicturePixel (bitmap); 
HashMap Color2=new HashMap (a); 
For (Integer color: picturePixel) {
If (color2. Either containsKey (color)) {
Integer to Integer=color2. Get (color); 
Integer++; 
System. The out. Println (integer++); 
Color2. Remove (color); 
Color2. Put (color, integer); 

} else {
Color2. Put (color, 1); 
} 
} 

//select the largest number of colors 
The Iterator iter=color2. EntrySet (). The Iterator (); 

int count=0; 
Int color=0; 
While (iter) hasNext ()) {
The Map. The Entry Entry=(Map. Entry) iter. Next (); 
The int value=https://bbs.csdn.net/topics/(Integer) entry. GetValue (); 
If (countThe count=value; 
Color=(Integer) entry. GetKey (); 
} 

} 

Bitmap. EraseColor (color); 
Picture. SetImageBitmap (bitmap); 
} 
The catch (Exception e) {

Toast. MakeText (getApplication (), e. oString (), Toast. LENGTH_LONG), show (); 
} 
System. The gc (); 
} the catch (FileNotFoundException e) {
e.printStackTrace(); 
Toast. MakeText (getApplication (), e. oString (), Toast. LENGTH_LONG), show (); 
} 
} 
break; 
Default: 
break; 
} 
} 

Static class BitmapUtil {
Public static ArrayList GetPicturePixel (Bitmap Bitmap) 
{
Int width=bitmap. GetWidth (); 
Int height=bitmap. GetHeight (); 

//save all the pixel array, the image width x height 
Int [] pixels=new int (width * height); 

Bitmap. GetPixels (pixels, 0, width, 0, 0, width, height); 
ArrayList RGB=new ArrayList (a); 
for (int i=0; I & lt; Pixels. Length; I++) {
Int the CLR=pixels [I]; 
Int red=(CLR & amp; 0 x00ff0000) & gt;> 16.//take high two 
Int green=(CLR & amp; 0 x0000ff00) & gt;> 8;//take two 
Int blue=CLR & amp; 0 x000000ff;//take low two 
The d (" tag ", "r=" + red + ", g="+ green +", b="+ blue); 
Int color=color RGB (red, green, blue);//remove the white and black 
If (color!=Color. WHITE & amp; & Color!=Color. BLACK) {
RGB. The add (color); 
} 
} 
Return RGB. 
} 
} 
} 

CodePudding user response:

See your system version, different version is not the same method to obtain the images