Android中使用GridView实现仿微信图片上传功能(附源代码)

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> 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 map = new HashMap();
    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 map = new HashMap();
        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 map = new HashMap();
      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<&＃63;> 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);
  }
}

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;
  }
}

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);
  }
}