Android开发之使用GridView+仿微信图片上传功能(附源代码)

前言：如果转载文章请声明转载自：https://i.cnblogs.com/EditPosts.aspx?postid=7419021  。另外针对有些网站转载本人的文章结果源码链接不对的问题，本人在此附上源码地址：http://download.csdn.net/download/m0_38125535/9951649。如果您是在其它技术网站看到的这篇文章，发现链接网页显示的是404，请按照本人上面留下的地址下载源码，因为CSDN不知怎么回事无法设置0积分下载，所以只能设置最低1积分，给各位带来的不便请见谅。另外这个方法中存在一个bug，具体bug以及bug的解决方案请参考下面评论区本人的说明。

　　由于工作要求最近在使用GridView完成图片的批量上传功能，我的例子当中包含仿微信图片上传、拍照、本地选择、相片裁剪等功能，如果有需要的朋友可以看一下，希望我的实际经验能对您有所帮助。

直接上图，下面的图片就是点击“加号”后弹出的对话框，通过对话框可以根据自己需求进行相片选择。

            

项目结构：

下面直接上代码。

整体的布局文件activity_main.xml

<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:background="@drawable/index"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="44dp"
        android:background="#24cf5f"
        android:orientation="horizontal" >

        <ImageView
            android:id="@+id/back"
            android:layout_width="match_parent"
            android:layout_height="20dp"
            android:layout_gravity="center"
            android:layout_weight="5"
            android:src="@drawable/back" />

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="44dp"
            android:layout_weight="1"
            android:gravity="center"
            android:paddingRight="40dp"
            android:text="图片上传"
            android:textColor="#FFFFFF"
            android:textSize="30px" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000000" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical" >

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:background="#000000" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="60dp"
                android:layout_weight="1"
                android:orientation="vertical" >

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:gravity="center"
                    android:text="请选择上传的图片" />

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:gravity="center"
                    android:text="（友情提示:图片最多可添加9张,点击可删除选择的图片）"
                    android:textSize="18px" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="1dp"
                android:background="#000000" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <com.yihang.MyGridView.MyGridView
                    android:id="@+id/gridView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="5dp"
                    android:layout_weight="111"
                    android:columnWidth="90dp"
                    android:gravity="center"
                    android:horizontalSpacing="5dp"
                    android:numColumns="4"
                    android:stretchMode="columnWidth"
                    android:verticalSpacing="5dp" />
            </LinearLayout>
        </LinearLayout>
    </ScrollView>

    <Button
        android:id="@+id/bt_submit"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="bottom"
        android:layout_weight="5.2"
        android:background="#24cf5f"
        android:text="上传"
        android:textColor="#FFFFFF"
        android:textSize="16sp" />

</LinearLayout>

activity：MainActivity

package com.yihang.activity;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
import android.widget.SimpleAdapter.ViewBinder;
import android.widget.Toast;

import com.yihang.dialog.MyDialog;
import com.yihang.dialog.MyDialog.OnButtonClickListener;
import com.yihang.photodemo.R;

public class MainActivity extends Activity implements
OnButtonClickListener, OnItemClickListener{
    private MyDialog dialog;// 图片选择对话框
    public static final int NONE = 0;
    public static final int PHOTOHRAPH = 1;// 拍照
    public static final int PHOTOZOOM = 2; // 缩放
    public static final int PHOTORESOULT = 3;// 结果
    public static final String IMAGE_UNSPECIFIED = "image/*";

    private GridView gridView; // 网格显示缩略图
    private final int IMAGE_OPEN = 4; // 打开图片标记
    private String pathImage; // 选择图片路径
    private Bitmap bmp; // 导入临时图片
    private ArrayList<HashMap<String, Object>> imageItem;
    private SimpleAdapter simpleAdapter; // 适配器

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        /*
         * 防止键盘挡住输入框 不希望遮挡设置activity属性 android:windowSoftInputMode="adjustPan"
         * 希望动态调整高度 android:windowSoftInputMode="adjustResize"
         */
        getWindow().setSoftInputMode(
                WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        // 锁定屏幕
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        setContentView(R.layout.activity_main);
        init();
        initData();
    }

    private void init() {
        gridView = (GridView) findViewById(R.id.gridView);
        gridView.setOnItemClickListener(this);
        dialog = new MyDialog(this);
        dialog.setOnButtonClickListener(this);
        // activity中调用其他activity中组件的方法
        LayoutInflater layout = this.getLayoutInflater();
        View view = layout.inflate(R.layout.layout_select_photo, null);


    }
    private void initData() {
        /*
         * 载入默认图片添加图片加号
         */
        bmp = BitmapFactory.decodeResource(getResources(),
                R.drawable.gridview_addpic); // 加号
        imageItem = new ArrayList<HashMap<String, Object>>();
        HashMap<String, Object> map = new HashMap<String, Object>();
        map.put("itemImage", bmp);
        imageItem.add(map);
        simpleAdapter = new SimpleAdapter(this, imageItem,
                R.layout.griditem_addpic, new String[] { "itemImage" },
                new int[] { R.id.imageView1 });
        simpleAdapter.setViewBinder(new ViewBinder() {
            @Override
            public boolean setViewValue(View view, Object data,
                    String textRepresentation) {
                // TODO Auto-generated method stub
                if (view instanceof ImageView && data instanceof Bitmap) {
                    ImageView i = (ImageView) view;
                    i.setImageBitmap((Bitmap) data);
                    return true;
                }
                return false;
            }
        });
        gridView.setAdapter(simpleAdapter);
    }


    @Override
    public void camera() {
        // TODO Auto-generated method stub
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
                Environment.getExternalStorageDirectory(), "temp.jpg")));
        startActivityForResult(intent, PHOTOHRAPH);
    }

    @Override
    public void gallery() {
        // TODO Auto-generated method stub
        Intent intent = new Intent(Intent.ACTION_PICK,
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(intent, IMAGE_OPEN);

    }

    @Override
    public void cancel() {
        // TODO Auto-generated method stub
        dialog.cancel();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == NONE)
            return;
        // 拍照
        if (requestCode == PHOTOHRAPH) {
            // 设置文件保存路径这里放在跟目录下
            File picture = new File(Environment.getExternalStorageDirectory()
                    + "/temp.jpg");
            startPhotoZoom(Uri.fromFile(picture));
        }

        if (data == null)
            return;

        // 处理结果
        if (requestCode == PHOTORESOULT) {
            Bundle extras = data.getExtras();
            if (extras != null) {
                Bitmap photo = extras.getParcelable("data");
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0-100)压缩文件
                // 将图片放入gridview中
                HashMap<String, Object> map = new HashMap<String, Object>();
                map.put("itemImage", photo);
                imageItem.add(map);
                simpleAdapter = new SimpleAdapter(this, imageItem,
                        R.layout.griditem_addpic, new String[] { "itemImage" },
                        new int[] { R.id.imageView1 });
                simpleAdapter.setViewBinder(new ViewBinder() {
                    @Override
                    public boolean setViewValue(View view, Object data,
                            String textRepresentation) {
                        // TODO Auto-generated method stub
                        if (view instanceof ImageView && data instanceof Bitmap) {
                            ImageView i = (ImageView) view;
                            i.setImageBitmap((Bitmap) data);
                            return true;
                        }
                        return false;
                    }
                });
                gridView.setAdapter(simpleAdapter);
                simpleAdapter.notifyDataSetChanged();
                dialog.dismiss();
            }

        }
        // 打开图片
        if (resultCode == RESULT_OK && requestCode == IMAGE_OPEN) {
            startPhotoZoom(data.getData());
        }
        super.onActivityResult(requestCode, resultCode, data);

    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        if (!TextUtils.isEmpty(pathImage)) {
            Bitmap addbmp = BitmapFactory.decodeFile(pathImage);
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("itemImage", addbmp);
            imageItem.add(map);
            simpleAdapter = new SimpleAdapter(this, imageItem,
                    R.layout.griditem_addpic, new String[] { "itemImage" },
                    new int[] { R.id.imageView1 });
            simpleAdapter.setViewBinder(new ViewBinder() {
                @Override
                public boolean setViewValue(View view, Object data,
                        String textRepresentation) {
                    // TODO Auto-generated method stub
                    if (view instanceof ImageView && data instanceof Bitmap) {
                        ImageView i = (ImageView) view;
                        i.setImageBitmap((Bitmap) data);
                        return true;
                    }
                    return false;
                }
            });
            gridView.setAdapter(simpleAdapter);
            simpleAdapter.notifyDataSetChanged();
            // 刷新后释放防止手机休眠后自动添加
            pathImage = null;
            dialog.dismiss();
        }

    }

    @Override
    public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
        // TODO Auto-generated method stub
        if (imageItem.size() == 10) { // 第一张为默认图片
            Toast.makeText(MainActivity.this, "图片数9张已满",
                    Toast.LENGTH_SHORT).show();
        } else if (position == 0) { // 点击图片位置为+ 0对应0张图片
            // 选择图片
            dialog.show();

            // 通过onResume()刷新数据
        } else {
            dialog(position);
        }

    }

    /*
     * Dialog对话框提示用户删除操作 position为删除图片位置
     */
    protected void dialog(final int position) {
        AlertDialog.Builder builder = new Builder(MainActivity.this);
        builder.setMessage("确认移除已添加图片吗？");
        builder.setTitle("提示");
        builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
                imageItem.remove(position);
                simpleAdapter.notifyDataSetChanged();
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        builder.create().show();
    }

    public void startPhotoZoom(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
        intent.putExtra("crop", "true");
        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        // outputX outputY 是裁剪图片宽高
        intent.putExtra("outputX", 64);
        intent.putExtra("outputY", 64);
        intent.putExtra("return-data", true);
        startActivityForResult(intent, PHOTORESOULT);
    }

}

弹出的对话框(仿照微信来完成)：MyDialog

package com.yihang.dialog;

import com.yihang.photodemo.R;

import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.View.OnClickListener;
/**
 * 对话框实现类
 * @author admin
 *
 */
public class MyDialog extends Dialog implements OnClickListener {

    public MyDialog(Context context) {
        super(context,R.style.myDialog);
        //初始化布局
                setContentView(R.layout.layout_select_photo);
                Window dialogWindow = getWindow();
                dialogWindow.setLayout(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
                dialogWindow.setGravity(Gravity.BOTTOM);
                setCanceledOnTouchOutside(true);

                findViewById(R.id.btn_camera).setOnClickListener(this);
                findViewById(R.id.btn_gallery).setOnClickListener(this);
                findViewById(R.id.btn_cancel).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.btn_camera:
            onButtonClickListener.camera();
            break;
        case R.id.btn_gallery:
            onButtonClickListener.gallery();
            break;
        case R.id.btn_cancel:
            onButtonClickListener.cancel();
            break;

        default:
            break;
        }
    }
    /**
     * 按钮的监听器
     * @author Orathee
     * @date 2014年3月20日 下午4:28:39
     */
    public interface OnButtonClickListener{
        void camera();
        void gallery();
        void cancel();
    }
    private OnButtonClickListener onButtonClickListener;

    public OnButtonClickListener getOnButtonClickListener() {
        return onButtonClickListener;
    }

    public void setOnButtonClickListener(OnButtonClickListener onButtonClickListener) {
        this.onButtonClickListener = onButtonClickListener;
    }

}

对话框的布局文件：layout_select_photo.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="bottom">
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:background="@drawable/btn_style_alert_dialog_background"
        android:padding="20dp">

            <TextView
                android:id="@+id/btn_camera"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:background="@drawable/btn_style_alert_dialog_button"
                android:textColor="#0f0f0f"
                android:text="拍照"
                android:shadowDx="0.5"
                android:shadowDy="0.5"
                android:shadowRadius="0.5"
                android:shadowColor="#ffffff"
                android:layout_marginBottom="10dp"
                android:padding="10dp"
                android:gravity="center"/>

            <TextView
                android:id="@+id/btn_gallery"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:textSize="18sp"
                android:background="@drawable/btn_style_alert_dialog_button"
                android:textColor="#0f0f0f"
                android:text="从相册中选择"
                android:shadowDx="0.5"
                android:shadowDy="0.5"
                android:shadowRadius="0.5"
                android:shadowColor="#ffffff"
                android:layout_marginBottom="10dp"
                android:padding="10dp"
                android:gravity="center"/>

            <TextView
                android:id="@+id/btn_cancel"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/btn_style_alert_dialog_cancel"
                android:textColor="#ffffff"
                android:textSize="18sp"
                android:text="取消"
                android:shadowDx="0.5"
                android:shadowDy="0.5"
                android:shadowRadius="0.5"
                android:shadowColor="#000000"
                android:layout_marginTop="10dp"
                android:padding="10dp"
                android:gravity="center"/>
    </LinearLayout>
</LinearLayout>

自定义的GridView:

package com.yihang.MyGridView;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.GridView;

public class MyGridView extends GridView {

    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }

    public MyGridView(Context context) {
        super(context);
    }

    public MyGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        // TODO Auto-generated method stub
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}

 源代码下载地址：http://download.csdn.net/download/m0_38125535/9951649