Android Camera + image Cropping

To meet a small requirement, we need to achieve the image cropping function similar to the screenshot picture! The time requirement is very tight, so I read a few demos. Although the principle is not difficult, there are only a few useful examples. Find the least rotten apple in a pile of rotten apples. Then I modified it myself to meet the expected requirements!

 

Departments and bureaus:

1 <? Xml version = "1.0" encoding = "UTF-8"?> 2 <LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" 3 android: layout_width = "match_parent" 4 android: layout_height = "match_parent" 5 android: orientation = "vertical"> 6 7 <Button 8 android: id = "@ + id/selectImageBtn" 9 android: layout_width = "fill_parent" 10 android: layout_height = "wrap_content" 11 android: text = "select image"/> 12 13 <ImageView14 android: id = "@ + id/imageView" 15 android: layout_width = "wrap_content" 16 android: layout_height = "wrap_content"/> 17 18 </LinearLayout>View Code

　　

Activity part:

1 import android. app. activity; 2 import android. app. alertDialog; 3 import android. content. dialogInterface; 4 import android. content. intent; 5 import android. graphics. bitmap; 6 import android. graphics. bitmapFactory; 7 import android.net. uri; 8 import android. OS. bundle; 9 import android. OS. environment; 10 import android. provider. mediaStore; 11 import android. view. view; 12 import android. widget. button; 13 import android. widget. imageView; 14 15 public class DoPhotoActivity extends Activity implements 16 View. onClickListener {17 18/** Called when the activity is first created. */19 20 private Button selectImageBtn; 21 22 private ImageView imageView; 23 24 private File sdcardTempFile; 25 26 private AlertDialog dialog; 27 28 private int crop = 128; 29 30 private static final int PHOTO_PICKED_WI TH_DATA = 3021; 31 32 private static final int PHOTO_CAMERA_PICKED_WITH_DATA = 3022; 33 34 private static final int CAMERA_WITH_DATA = 3023; 35 36 @ Override 37 public void onCreate (Bundle savedInstanceState) {38 39 super. onCreate (savedInstanceState); 40 41 setContentView (R. layout. do_photo); 42 43 selectImageBtn = (Button) findViewById (R. id. selectImageBtn); 44 45 imageView = (ImageView) findViewBy Id (R. id. imageView); 46 47 selectImageBtn. setOnClickListener (this); 48 49 sdcardTempFile = new File (Environment. getExternalStorageDirectory () 50 + "/MYIMAGE/" + String. valueOf (System. currentTimeMillis () 51 + ". jpg "); 52} 53 54 public void ImageScale () {55 56 Intent intent = new Intent (" android. intent. action. PICK "); 57 intent. setDataAndType (MediaStore. images. media. INTERNAL_CONTENT_URI, 58 "image/ * "); 59 intent. putExtra ("output", Uri. fromFile (sdcardTempFile); 60 intent. putExtra ("crop", "true"); 61 intent. putExtra ("aspectX", 1); // The ratio of the cropping frame is 62 intent. putExtra ("aspectY", 1); 63 intent. putExtra ("outputX", crop); // the size of the output image is 64 intent. putExtra ("outputY", crop); 65 startActivityForResult (intent, PHOTO_PICKED_WITH_DATA); 66} 67 68 public void photo () {69 70 Intent intent = new Intent (MediaStore. ACTI Principal); 71 startActivityForResult (intent, CAMERA_WITH_DATA); 72} 73 74 protected void doCropPhoto (Bitmap data) {75 76 Intent intent = getCropImageIntent (data); 77 startActivityForResult (intent, PHOTO_CAMERA_PICKED_WITH_DATA); 78} 79 80 public Intent getCropImageIntent (Bitmap data) {81 Intent intent = new Intent ("com. android. camera. action. CROP "); 82 intent. setType ("image/*"); 83 inte Nt. putExtra ("data", data); 84 intent. putExtra ("crop", "true"); 85 intent. putExtra ("aspectX", 1); 86 intent. putExtra ("aspectY", 1); 87 intent. putExtra ("outputX", crop); 88 intent. putExtra ("outputY", crop); 89 intent. putExtra ("return-data", true); 90 return intent; 91} 92 93 @ Override 94 public void onClick (View v) {95 96 if (v = selectImageBtn) {97 98 if (dialog = null) {99 100 dialog = new LertDialog. builder (this ). setItems (101 new String [] {"camera", "album"}, 102 new DialogInterface. onClickListener () {103 104 @ Override105 public void onClick (DialogInterface dialog, 106 int which) {107 108 109 if (which = 0) {110 photo (); 111 112} else {113 ImageScale (); 114} 115 116} 117 118 }). create (); 119 120} 121 122 if (! Dialog. isShowing () {123 124 dialog. show (); 125 126} 127 128} 129 130} 131 132 @ overridemo-protected void onActivityResult (int requestCode, int resultCode, Intent data) {134 135 if (resultCode = RESULT_ OK) {136 137 switch (requestCode) {138 139 case CAMERA_WITH_DATA: 140 141 Bitmap camera_photo = data. getParcelableExtra ("data"); 142 doCropPhoto (camera_photo); 143 144 145 case PHOTO_PICKED_WITH_DATA: 146 147 Bitmap picked_photo = BitmapFactory. decodeFile (sdcardTempFile. getAbsolutePath (); 148 imageView. setImageBitmap (picked_photo); 149 break; 150 151 case PHOTO_CAMERA_PICKED_WITH_DATA: 152 153 Bitmap camera_picked_photo = data. getParcelableExtra ("data"); 154 imageView. setImageBitmap (camera_picked_photo); 155 break; 156 157} 158 159} 160} 161}View Code