首页 / 移动开发 / Android / Android利用Intent实现读取图片操作

  
2、主要设计步骤
（1）添加ch1203_ReadGallery.axml

<?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"><Buttonandroid:id="@+id/btn1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_margin="30dp"android:layout_gravity="center"android:text="从图库中挑选一幅图片" /><TextViewandroid:text="你挑选的图片为："android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/textView1"android:layout_gravity="center"android:layout_margin="30dp" /><ImageViewandroid:id="@+id/myImageView"android:layout_gravity="center"android:layout_width="wrap_content"android:layout_height="wrap_content" /></LinearLayout>

using Android.App;using Android.Content;using Android.OS;using Android.Runtime;using Android.Widget;namespace MyDemos.SrcDemos{[Activity（Label = "【例12-3】读取图库图片"）]public class ch1203ReadGallery : Activity{protected override void OnCreate（Bundle savedInstanceState）{base.OnCreate（savedInstanceState）;SetContentView（Resource.Layout.ch1203_ReadGallery）;var btn1 = FindViewById<Button>（Resource.Id.btn1）;btn1.Click += delegate {var imageIntent = new Intent（）;imageIntent.SetType（"image/*"）;imageIntent.SetAction（Intent.ActionGetContent）;StartActivityForResult（ Intent.CreateChooser（imageIntent, "选择的图片："）, 0）;};}protected override void OnActivityResult（int requestCode, [GeneratedEnum] Result resultCode, Intent data）{base.OnActivityResult（requestCode, resultCode, data）;if （resultCode == Result.Ok）{var imageView = FindViewById<ImageView>（Resource.Id.myImageView）;imageView.SetImageURI（data.Data）;}}}}