Android中使用GridView实现仿微信图片上传功能(附源代码)

<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>

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 implementsOnButtonClickListener, 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);  }}

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;  }}

<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>

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);  }}