Android实现QQ图片说说照片选择效果

概述本文实例为大家分享了Android实现QQ图片说说照片选择的具体代码，供大家参考，具体内容如下

本文实例为大家分享了AndroID实现QQ图片说说照片选择的具体代码，供大家参考，具体内容如下

效果展示

布局文件

布局是很简单的，一个GrIDVIEw，直接上布局：

layout/activity_add_photo.xml

<?xml version="1.0" enCoding="utf-8"?><linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:orIEntation="vertical"> <relativeLayout  androID:layout_wIDth="match_parent"  androID:layout_height="60dp"  androID:background="#00BB9C">  <TextVIEw   androID:layout_wIDth="wrap_content"   androID:layout_height="wrap_content"   androID:layout_centerInParent="true"   androID:text="写动态"   androID:textAppearance="?androID:attr/textAppearanceLarge"   androID:textcolor="@androID:color/white" />  <TextVIEw   androID:ID="@+ID/send"   androID:layout_wIDth="wrap_content"   androID:layout_height="wrap_content"   androID:layout_alignParentRight="true"   androID:layout_centerVertical="true"   androID:layout_marginRight="10dp"   androID:text="发送"   androID:textAppearance="?androID:attr/textAppearanceLarge"   androID:textcolor="@androID:color/white" /> </relativeLayout> <linearLayout  androID:layout_wIDth="match_parent"  androID:layout_height="match_parent"  androID:layout_margin="16dp"  androID:orIEntation="vertical">  <EditText   androID:layout_wIDth="match_parent"   androID:layout_height="100dp"   androID:enabled="false"   androID:focusable="false"   androID:gravity="top"   androID:hint="分享您的那点新鲜事儿..."   androID:maxlines="5" />  <linearLayout   androID:layout_wIDth="match_parent"   androID:layout_height="match_parent"   androID:padding="5dp">   <GrIDVIEw    androID:ID="@+ID/grIDvIEw"    androID:layout_wIDth="match_parent"    androID:layout_height="wrap_content"    androID:numColumns="4" />  </linearLayout>   </linearLayout></linearLayout>

layout/activity_add_photo_gv_items.xml 使用了自定义的vIEw使得布局为正方形

<?xml version="1.0" enCoding="utf-8"?><com.shenhua.tabhostdemo.selectimg.SquarerelativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content"> <ImageVIEw  androID:ID="@+ID/main_grIDVIEw_item_photo"  androID:layout_wIDth="match_parent"  androID:layout_height="match_parent"  androID:layout_centerInParent="true"  androID:contentDescription="@null"  androID:padding="5dp"  androID:scaleType="fitXY" /> <CheckBox  androID:ID="@+ID/main_grIDVIEw_item_cb"  androID:layout_wIDth="20dp"  androID:layout_height="20dp"  androID:layout_alignParentEnd="true"  androID:layout_alignParentRight="true"  androID:layout_alignParenttop="true"  androID:layout_margin="2dp"  androID:background="@drawable/ic_delete"  androID:backgroundTint="#00BB9C"  androID:button="@null" /></com.shenhua.tabhostdemo.selectimg.SquarerelativeLayout>

代码实现

SquarerelativeLayout.java：

package com.shenhua.tabhostdemo.selectimg;import androID.content.Context;import androID.util.AttributeSet;import androID.Widget.relativeLayout;/** * 自定义方形布局 * Created by Shenhua on 4/25/2016. */public class SquarerelativeLayout extends relativeLayout { public SquarerelativeLayout(Context context,AttributeSet attrs,int defStyle) {  super(context,attrs,defStyle); } public SquarerelativeLayout(Context context,AttributeSet attrs) {  super(context,attrs); } public SquarerelativeLayout(Context context) {  super(context); } @OverrIDe protected voID onMeasure(int wIDthMeasureSpec,int heightmeasureSpec) {  setMeasuredDimension(getDefaultSize(0,wIDthMeasureSpec),getDefaultSize(0,heightmeasureSpec));  int chilDWIDthSize = getMeasureDWIDth();  wIDthMeasureSpec = MeasureSpec.makeMeasureSpec(chilDWIDthSize,MeasureSpec.EXACTLY);  heightmeasureSpec = wIDthMeasureSpec;  super.onMeasure(wIDthMeasureSpec,heightmeasureSpec); }}

UploadPhotoActivity.java： 主Activity

package com.shenhua.tabhostdemo.selectimg;import androID.content.Intent;import androID.graphics.Bitmap;import androID.graphics.BitmapFactory;import androID.net.Uri;import androID.os.Bundle;import androID.support.annotation.Nullable;import androID.support.v7.app.AppCompatActivity;import androID.vIEw.LayoutInflater;import androID.vIEw.VIEw;import androID.vIEw.VIEwGroup;import androID.Widget.AdapterVIEw;import androID.Widget.BaseAdapter;import androID.Widget.CheckBox;import androID.Widget.GrIDVIEw;import androID.Widget.ImageVIEw;import androID.Widget.TextVIEw;import androID.Widget.Toast;import com.shenhua.tabhostdemo.R;import java.io.ByteArrayOutputStream;import java.util.ArrayList;import java.util.List;/** * Created by shenhua on 4/25/2016. */public class UploadPhotoActivity extends AppCompatActivity { private static final int img_COUNT = 8; private static final String img_ADD_TAG = "a"; private GrIDVIEw grIDVIEw; private GVAdapter adapter; private TextVIEw textVIEw; private ImageVIEw img; private List<String> List; @OverrIDe protected voID onCreate(@Nullable Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentVIEw(R.layout.activity_add_photo);  grIDVIEw = (GrIDVIEw) findVIEwByID(R.ID.grIDvIEw);  textVIEw = (TextVIEw) findVIEwByID(R.ID.send);  textVIEw.setonClickListener(new VIEw.OnClickListener() {   @OverrIDe   public voID onClick(VIEw v) {    System.out.println("发送：" + Integer.toString(List.size() - 1));    upLoad();   }  });  initData(); } private voID upLoad() {  Bitmap bitmap;  Bitmap bmpCompressed;  for (int i = 0; i < List.size() - 1; i++) {   bitmap = BitmapFactory.decodefile(List.get(i));   bmpCompressed = Bitmap.createScaledBitmap(bitmap,640,480,true);   ByteArrayOutputStream bos = new ByteArrayOutputStream();   bmpCompressed.compress(Bitmap.CompressFormat.JPEG,100,bos);   byte[] data = bos.toByteArray();   System.out.println(data);  } } private voID initData() {  if (List == null) {   List = new ArrayList<>();   List.add(img_ADD_TAG);  }  adapter = new GVAdapter();  grIDVIEw.setAdapter(adapter);  grIDVIEw.setonItemClickListener(new AdapterVIEw.OnItemClickListener() {   @OverrIDe   public voID onItemClick(AdapterVIEw<?> parent,VIEw vIEw,int position,long ID) {    if (List.get(position).equals(img_ADD_TAG)) {     if (List.size() < img_COUNT) {      Intent i = new Intent(Intent.ACTION_PICK,androID.provIDer.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);      startActivityForResult(i,0);     } else      Toast.makeText(UploadPhotoActivity.this,"最多只能选择7张照片！",Toast.LENGTH_SHORT).show();    }   }  });  refreshAdapter(); } private voID refreshAdapter() {  if (List == null) {   List = new ArrayList<>();  }  if (adapter == null) {   adapter = new GVAdapter();  }  adapter.notifyDataSetChanged(); } private class GVAdapter extends BaseAdapter {  @OverrIDe  public int getCount() {   return List.size();  }  @OverrIDe  public Object getItem(int position) {   return null;  }  @OverrIDe  public long getItemID(int position) {   return 0;  }  @OverrIDe  public VIEw getVIEw(final int position,VIEw convertVIEw,VIEwGroup parent) {   final VIEwHolder holder;   if (convertVIEw == null) {    convertVIEw = LayoutInflater.from(getApplication()).inflate(R.layout.activity_add_photo_gv_items,parent,false);    holder = new VIEwHolder();    holder.imageVIEw = (ImageVIEw) convertVIEw.findVIEwByID(R.ID.main_grIDVIEw_item_photo);    holder.checkBox = (CheckBox) convertVIEw.findVIEwByID(R.ID.main_grIDVIEw_item_cb);    convertVIEw.setTag(holder);   } else {    holder = (VIEwHolder) convertVIEw.getTag();   }   String s = List.get(position);   if (!s.equals(img_ADD_TAG)) {    holder.checkBox.setVisibility(VIEw.VISIBLE);    holder.imageVIEw.setimageBitmap(Imagetool.createImagethumbnail(s));   } else {    holder.checkBox.setVisibility(VIEw.GONE);    holder.imageVIEw.setimageResource(R.mipmap.ic_photo_upload);   }   holder.checkBox.setonClickListener(new VIEw.OnClickListener() {    @OverrIDe    public voID onClick(VIEw v) {     List.remove(position);     refreshAdapter();    }   });   return convertVIEw;  }  private class VIEwHolder {   ImageVIEw imageVIEw;   CheckBox checkBox;  } } @OverrIDe protected voID onActivityResult(int requestCode,int resultCode,Intent data) {  super.onActivityResult(requestCode,resultCode,data);  if (data == null) {   System.out.println("data null");   return;  }  if (requestCode == 0) {   final Uri uri = data.getData();   String path = Imagetool.getimageabsolutePath(this,uri);   System.out.println(path);   if (List.size() == img_COUNT) {    removeItem();    refreshAdapter();    return;   }   removeItem();   List.add(path);   List.add(img_ADD_TAG);   refreshAdapter();  } } private voID removeItem() {  if (List.size() != img_COUNT) {   if (List.size() != 0) {    List.remove(List.size() - 1);   }  } }}

Imagetool.java： 图片工具类

package com.shenhua.tabhostdemo.selectimg;import androID.annotation.TargetAPI;import androID.app.Activity;import androID.content.ContentUris;import androID.content.Context;import androID.database.Cursor;import androID.graphics.Bitmap;import androID.graphics.BitmapFactory;import androID.net.Uri;import androID.os.Environment;import androID.provIDer.documentsContract;import androID.provIDer.MediaStore;/** * Created by shenhua on 4/26/2016. */public class Imagetool { /**  * 获取图片的绝对路径，需要添加用户权限  */ @TargetAPI(19) public static String getimageabsolutePath(Activity context,Uri imageUri) {  if (context == null || imageUri == null)   return null;  if (androID.os.Build.VERSION.SDK_INT >= androID.os.Build.VERSION_CODES.KITKAT && documentsContract.isdocumentUri(context,imageUri)) {   if (isExternalStoragedocument(imageUri)) {    String docID = documentsContract.getdocumentID(imageUri);    String[] split = docID.split(":");    String type = split[0];    if ("primary".equalsIgnoreCase(type)) {     return Environment.getExternalStorageDirectory() + "/" + split[1];    }   } else if (isDownloadsdocument(imageUri)) {    String ID = documentsContract.getdocumentID(imageUri);    Uri contentUri = ContentUris.withAppendedID(Uri.parse("content://downloads/public_downloads"),Long.valueOf(ID));    return getDataColumn(context,contentUri,null,null);   } else if (isMediadocument(imageUri)) {    String docID = documentsContract.getdocumentID(imageUri);    String[] split = docID.split(":");    String type = split[0];    Uri contentUri = null;    if ("image".equals(type)) {     contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;    } else if ("vIDeo".equals(type)) {     contentUri = null;//不获取视频    } else if ("audio".equals(type)) {     contentUri = null;//不获取音频    }    String selection = MediaStore.Images.Media._ID + "=?";    String[] selectionArgs = new String[]{split[1]};    return getDataColumn(context,selection,selectionArgs);   }  } // MediaStore (and general)  else if ("content".equalsIgnoreCase(imageUri.getScheme())) {   if (isGooglePhotosUri(imageUri))    return imageUri.getLastPathSegment();   return getDataColumn(context,imageUri,null);  }  // file  else if ("file".equalsIgnoreCase(imageUri.getScheme())) {   return imageUri.getPath();  }  return null; } public static String getDataColumn(Context context,Uri uri,String selection,String[] selectionArgs) {  Cursor cursor = null;  String column = MediaStore.Images.Media.DATA;  String[] projection = {column};  try {   cursor = context.getContentResolver().query(uri,projection,selectionArgs,null);   if (cursor != null && cursor.movetoFirst()) {    int index = cursor.getColumnIndexOrThrow(column);    return cursor.getString(index);   }  } finally {   if (cursor != null)    cursor.close();  }  return null; } /**  * @param uri The Uri to check.  * @return Whether the Uri authority is ExternalStorageProvIDer.  */ public static boolean isExternalStoragedocument(Uri uri) {  return "com.androID.externalstorage.documents".equals(uri.getAuthority()); } /**  * @param uri The Uri to check.  * @return Whether the Uri authority is DownloadsProvIDer.  */ public static boolean isDownloadsdocument(Uri uri) {  return "com.androID.provIDers.downloads.documents".equals(uri.getAuthority()); } /**  * @param uri The Uri to check.  * @return Whether the Uri authority is MediaProvIDer.  */ public static boolean isMediadocument(Uri uri) {  return "com.androID.provIDers.media.documents".equals(uri.getAuthority()); } /**  * @param uri The Uri to check.  * @return Whether the Uri authority is Google Photos.  */ public static boolean isGooglePhotosUri(Uri uri) {  return "com.Google.androID.apps.photos.content".equals(uri.getAuthority()); } /**  * 创建图片缩略图  *  * @param filePath  * @return  */ public static Bitmap createImagethumbnail(String filePath) {  Bitmap bitmap = null;  BitmapFactory.Options opts = new BitmapFactory.Options();  opts.inJustDecodeBounds = true;  BitmapFactory.decodefile(filePath,opts);  opts.inSampleSize = computeSampleSize(opts,-1,128 * 128);  opts.inJustDecodeBounds = false;  try {   bitmap = BitmapFactory.decodefile(filePath,opts);  } catch (Exception e) {   // Todo: handle exception  }  return bitmap; } public static int computeSampleSize(BitmapFactory.Options options,int minSIDeLength,int maxnumOfPixels) {  int initialSize = computeInitialSampleSize(options,minSIDeLength,maxnumOfPixels);  int roundedSize;  if (initialSize <= 8) {   roundedSize = 1;   while (roundedSize < initialSize) {    roundedSize <<= 1;   }  } else {   roundedSize = (initialSize + 7) / 8 * 8;  }  return roundedSize; } private static int computeInitialSampleSize(BitmapFactory.Options options,int maxnumOfPixels) {  double w = options.outWIDth;  double h = options.outHeight;  int lowerBound = (maxnumOfPixels == -1) ? 1 : (int) Math.ceil(Math.sqrt(w * h / maxnumOfPixels));  int upperBound = (minSIDeLength == -1) ? 128 : (int) Math.min(Math.floor(w / minSIDeLength),Math.floor(h / minSIDeLength));  if (upperBound < lowerBound) {   // return the larger one when there is no overlapPing zone.   return lowerBound;  }  if ((maxnumOfPixels == -1) && (minSIDeLength == -1)) {   return 1;  } else if (minSIDeLength == -1) {   return lowerBound;  } else {   return upperBound;  } }}

因为 AndroID4.4以上版本获得的图片URI是com.xxxxx的，因此需要在工具类里做判断，否则得不到图片的绝对地址。

工具类参考了别人的一篇博客，忘了留博客地址了，请原博主谅解。

最后需要加上一个权限：

<uses-permission androID:name="androID.permission.READ_EXTERNAL_STORAGE" />

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

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