Android enables local album selection and returns to display,

Android enables local album selection and returns to display,

. Java

1 package com. jerry. crop; 2 3 import java. io. file; 4 5 import android. app. activity; 6 import android. content. intent; 7 import android. graphics. bitmap; 8 import android.net. uri; 9 import android. OS. bundle; 10 import android. OS. environment; 11 import android. provider. mediaStore; 12 import android. view. view; 13 import android. widget. imageView; 14 import android. widget. toast; 15 16 public class MainAct Ivity extends Activity {17 18 private static final int PHOTO_REQUEST_CAREMA = 1; // photograph 19 private static final int PHOTO_REQUEST_GALLERY = 2; // select 20 private static final int PHOTO_REQUEST_CUT = 3 from the album; // Result 21 22 private ImageView iv_image; 23 24/* avatar name */25 private static final String PHOTO_FILE_NAME = "temp_photo.jpg"; 26 private File tempFile; 27 28 @ Override 29 protected void onCreate (Bundle SavedInstanceState) {30 super. onCreate (savedInstanceState); 31 setContentView (R. layout. activity_main); 32 this. iv_image = (ImageView) this. findViewById (R. id. iv_image); 33} 34 35/* 36 * Get 37 */38 public void gallery (View view) {39 // activate the system image library, select an image 40 Intent intent = new Intent (Intent. ACTION_PICK); 41 intent. setType ("image/*"); 42 // enable an Activity with a returned value. The request code is PHOTO_REQUEST_GALLERY 43 startAct. IvityForResult (intent, PHOTO_REQUEST_GALLERY); 44} 45 46/* 47 * Get 48 */49 public void camera (View view) from the camera) {50 // activate camera 51 Intent intent = new Intent ("android. media. action. IMAGE_CAPTURE "); 52 // determines whether the memory card can be used. 53 if (hasSdcard () {54 tempFile = new File (Environment. getExternalStorageDirectory (), 55 PHOTO_FILE_NAME); 56 // create uri 57 Uri uri Uri = uri from the file. fromFile (tempFile); 58 intent. putExtra (Me DiaStore. EXTRA_OUTPUT, uri); 59} 60 // activate an Activity with a returned value. The request code is PHOTO_REQUEST_CAREMA 61 startActivityForResult (intent, PHOTO_REQUEST_CAREMA ); 62} 63 64/* 65 * Cut image 66 */67 private void crop (Uri uri) {68 // crop image Intent 69 intent Intent = new Intent ("com. android. camera. action. CROP "); 70 intent. setDataAndType (uri, "image/*"); 71 intent. putExtra ("crop", "true"); 72 // ratio of the cropping frame, intent. putExtra ("aspe CtX ", 1); 74 intent. putExtra ("aspectY", 1); 75 // the size of the output image after cropping is 76 intent. putExtra ("outputX", 250); 77 intent. putExtra ("outputY", 250); 78 79 intent. putExtra ("outputFormat", "JPEG"); // The image format is 80 intent. putExtra ("noFaceDetection", true); // cancel face recognition 81 intent. putExtra ("return-data", true); 82 // enable an Activity with a returned value. The request code is PHOTO_REQUEST_CUT 83 startActivityForResult (intent, PHOTO_REQUEST_CUT); 84} 85 86/* 8 7 * determine whether the sdcard is mounted 88 */89 private boolean hasSdcard () {90 if (Environment. getExternalStorageState (). equals (91 Environment. MEDIA_MOUNTED) {92 return true; 93} else {94 return false; 95} 96} 97 98 @ Override 99 protected void onActivityResult (int requestCode, int resultCode, Intent data) {100 if (requestCode = PHOTO_REQUEST_GALLERY) {101 // The data returned from the album is 102 if (data! = Null) {103 // obtain the full path of the image 104 Uri = data. getData (); 105 crop (uri); 106} 107 108} else if (requestCode = PHOTO_REQUEST_CAREMA) {109 // data returned from the camera 110 if (hasSdcard ()) {111 crop (Uri. fromFile (tempFile); 112} else {113 Toast. makeText (MainActivity. this, "no memory card found, unable to store photos! ", 0). show (); 114} 115 116} else if (requestCode = PHOTO_REQUEST_CUT) {117 // 118 if (data! = Null) {119 Bitmap bitmap = data. getParcelableExtra ("data"); 120 this. iv_image.setImageBitmap (bitmap); 121} 122 try {123 // Delete the temporary file 124 tempFile. delete (); 125} catch (Exception e) {126 e. printStackTrace (); 127} 128 129} 130 131 super. onActivityResult (requestCode, resultCode, data); 132} 133}

. Xml

1 <LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" 2 xmlns: tools = "http://schemas.android.com/tools" 3 android: layout_width = "match_parent" 4 android: layout_height = "match_parent" 5 android: orientation = "vertical" 6 tools: context = ". mainActivity "> 7 8 <Button 9 android: layout_width =" wrap_content "10 android: layout_height =" wrap_content "11 android: onClick =" gallery "12 android: text = "Get gallery image"/> 13 <Button14 android: layout_width = "wrap_content" 15 android: layout_height = "wrap_content" 16 android: onClick = "camera" 17 android: text = ""/> 18 19 <ImageView20 android: id = "@ + id/iv_image" 21 android: layout_width = "wrap_content" 22 android: layout_height = "wrap_content"/> 23 24 </LinearLayout>

 

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