android之使用GridView+仿微信图片上传功能(附源代码)
Posted 赵一航
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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
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:background="@drawable/index" 6 android:orientation="vertical" > 7 8 <LinearLayout 9 android:layout_width="match_parent" 10 android:layout_height="44dp" 11 android:background="#24cf5f" 12 android:orientation="horizontal" > 13 14 <ImageView 15 android:id="@+id/back" 16 android:layout_width="match_parent" 17 android:layout_height="20dp" 18 android:layout_gravity="center" 19 android:layout_weight="5" 20 android:src="@drawable/back" /> 21 22 <TextView 23 android:layout_width="fill_parent" 24 android:layout_height="44dp" 25 android:layout_weight="1" 26 android:gravity="center" 27 android:paddingRight="40dp" 28 android:text="图片上传" 29 android:textColor="#FFFFFF" 30 android:textSize="30px" /> 31 </LinearLayout> 32 33 <LinearLayout 34 android:layout_width="match_parent" 35 android:layout_height="1dp" 36 android:background="#000000" /> 37 38 <ScrollView 39 android:layout_width="match_parent" 40 android:layout_height="match_parent" 41 android:layout_weight="1" > 42 43 <LinearLayout 44 android:layout_width="match_parent" 45 android:layout_height="match_parent" 46 android:orientation="vertical" > 47 48 <LinearLayout 49 android:layout_width="match_parent" 50 android:layout_height="1dp" 51 android:background="#000000" /> 52 53 <LinearLayout 54 android:layout_width="match_parent" 55 android:layout_height="60dp" 56 android:layout_weight="1" 57 android:orientation="vertical" > 58 59 <TextView 60 android:layout_width="match_parent" 61 android:layout_height="match_parent" 62 android:layout_weight="1" 63 android:gravity="center" 64 android:text="请选择上传的图片" /> 65 66 <TextView 67 android:layout_width="match_parent" 68 android:layout_height="match_parent" 69 android:layout_weight="1" 70 android:gravity="center" 71 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）" 72 android:textSize="18px" /> 73 </LinearLayout> 74 75 <LinearLayout 76 android:layout_width="match_parent" 77 android:layout_height="1dp" 78 android:background="#000000" /> 79 80 <LinearLayout 81 android:layout_width="match_parent" 82 android:layout_height="match_parent" 83 android:layout_weight="1" > 84 85 <com.yihang.MyGridView.MyGridView 86 android:id="@+id/gridView" 87 android:layout_width="match_parent" 88 android:layout_height="wrap_content" 89 android:layout_margin="5dp" 90 android:layout_weight="111" 91 android:columnWidth="90dp" 92 android:gravity="center" 93 android:horizontalSpacing="5dp" 94 android:numColumns="4" 95 android:stretchMode="columnWidth" 96 android:verticalSpacing="5dp" /> 97 </LinearLayout> 98 </LinearLayout> 99 </ScrollView> 100 101 <Button 102 android:id="@+id/bt_submit" 103 android:layout_width="match_parent" 104 android:layout_height="match_parent" 105 android:layout_gravity="bottom" 106 android:layout_weight="5.2" 107 android:background="#24cf5f" 108 android:text="上传" 109 android:textColor="#FFFFFF" 110 android:textSize="16sp" /> 111 112 </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
1 package com.yihang.dialog; 2 3 import com.yihang.photodemo.R; 4 5 import android.app.Dialog; 6 import android.content.Context; 7 import android.view.Gravity; 8 import android.view.View; 9 import android.view.ViewGroup; 10 import android.view.Window; 11 import android.view.View.OnClickListener; 12 /** 13 * 对话框实现类 14 * @author admin 15 * 16 */ 17 public class MyDialog extends Dialog implements OnClickListener { 18 19 public MyDialog(Context context) { 20 super(context,R.style.myDialog); 21 //初始化布局 22 setContentView(R.layout.layout_select_photo); 23 Window dialogWindow = getWindow(); 24 dialogWindow.setLayout(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); 25 dialogWindow.setGravity(Gravity.BOTTOM); 26 setCanceledOnTouchOutside(true); 27 28 findViewById(R.id.btn_camera).setOnClickListener(this); 29 findViewById(R.id.btn_gallery).setOnClickListener(this); 30 findViewById(R.id.btn_cancel).setOnClickListener(this); 31 } 32 33 @Override 34 public void onClick(View v) { 35 // TODO Auto-generated method stub 36 switch (v.getId()) { 37 case R.id.btn_camera: 38 onButtonClickListener.camera(); 39 break; 40 case R.id.btn_gallery: 41 onButtonClickListener.gallery(); 42 break; 43 case R.id.btn_cancel: 44 onButtonClickListener.cancel(); 45 break; 46 47 default: 48 break; 49 } 50 } 51 /** 52 * 按钮的监听器 53 * @author Orathee 54 * @date 2014年3月20日 下午4:28:39 55 */ 56 public interface OnButtonClickListener{ 57 void camera(); 58 void gallery(); 59 void cancel(); 60 } 61 private OnButtonClickListener onButtonClickListener; 62 63 public OnButtonClickListener getOnButtonClickListener() { 64 return onButtonClickListener; 65 } 66 67 public void setOnButtonClickListener(OnButtonClickListener onButtonClickListener) { 68 this.onButtonClickListener = onButtonClickListener; 69 } 70 71 }
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:
1 package com.yihang.MyGridView; 2 3 import android.content.Context; 4 import android.util.AttributeSet; 5 import android.widget.GridView; 6 7 public class MyGridView extends GridView { 8 9 public MyGridView(Context context, AttributeSet attrs) { 10 super(context, attrs); 11 // TODO Auto-generated constructor stub 12 } 13 14 public MyGridView(Context context) { 15 super(context); 16 } 17 18 public MyGridView(Context context, AttributeSet attrs, int defStyle) { 19 super(context); 20 } 21 22 @Override 23 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 24 // TODO Auto-generated method stub 25 int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, 26 MeasureSpec.AT_MOST); 27 super.onMeasure(widthMeasureSpec, expandSpec); 28 } 29 }
源代码下载地址：http://download.csdn.net/download/m0_38125535/9951649
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