Android 调用系统相册选择图片并显示

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主要代码：

package wkk.app2;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

//调用系统相册-选择图片
private static final int IMAGE = 1;
//所需权限
//    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

public void onClick(View v) {
//调用相册
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, IMAGE);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//获取图片路径
if (requestCode == IMAGE && resultCode == Activity.RESULT_OK && data != null) {
Uri selectedImage = data.getData();
String[] filePathColumns = {MediaStore.Images.Media.DATA};
Cursor c = getContentResolver().query(selectedImage, filePathColumns, null, null, null);
c.moveToFirst();
int columnIndex = c.getColumnIndex(filePathColumns[0]);
String imagePath = c.getString(columnIndex);
showImage(imagePath);
c.close();
}
}

//加载图片
private void showImage(String imaePath){
Bitmap bm = BitmapFactory.decodeFile(imaePath);
((ImageView)findViewById(R.id.image)).setImageBitmap(bm);
}

}

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xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="wkk.app2.MainActivity">

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="点击选择图片" />

<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</LinearLayout>

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2016/12/05 10:17 

Demo下载地址: 
http://download.csdn.net/detail/w18756901575/9701803