Android中从图库中选取图片实例详解

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:orientation="vertical"   android:layout_width="fill_parent"   android:layout_height="fill_parent"   >   <ImageView       android:id="@+id/imgView"       android:layout_width="fill_parent"       android:layout_weight="1" android:layout_height="wrap_content"></ImageView>   <Button        android:layout_height="wrap_content"        android:text="Load Picture"        android:layout_width="wrap_content"        android:id="@+id/buttonLoadPicture"        android:layout_weight="0"        android:layout_gravity="center"></Button> </LinearLayout> 

  Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(i, RESULT_LOAD_IMAGE); 

protected void onActivityResult(int requestCode, int resultCode, Intent data) {   super.onActivityResult(requestCode, resultCode, data);      if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {     Uri selectedImage = data.getData();     String[] filePathColumn = { MediaStore.Images.Media.DATA };      Cursor cursor = getContentResolver().query(selectedImage,         filePathColumn, null, null, null);     cursor.moveToFirst();      int columnIndex = cursor.getColumnIndex(filePathColumn[0]);     String picturePath = cursor.getString(columnIndex);     cursor.close();          ImageView imageView = (ImageView) findViewById(R.id.imgView);     imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));      }