从相册或拍照获取图片，并实现图片的裁剪

来源：互联网发布：ubuntu 开3306端口编辑：程序博客网时间：2024/06/13 01:57

MainActivity：

package com.example.xushuailong.mydopicture;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Environment;import android.provider.MediaStore;import android.support.v4.app.FragmentActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import com.example.xushuailong.mydopicture.utils.Utilty;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;public class MainActivity extends FragmentActivity implements View.OnClickListener {    private static final int REQUEST_CODE_PICK_IMAGE = 0;    private static final int REQUEST_CODE_CAPTURE_CAMERA = 1;    private static final int REQUEST_CODE_REL_CAPTURE_CAMERA = 2;    private static final int REQUEST_CODE_CROP_CAPTURE_CAMERA = 3;//    private static final int REQUEST_CODE_CROP_PICK_IMAGE = 3;    private Button btn_get_from_album, btn_get_from_camera, btn_get_rel_from_camera, btn_get_crop_from_camera, btn_get_crop_from_album;    private String ima_path;    private TextView txt_img_path;    private ImageView img;    private String rel_ima_path;    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        if (requestCode == REQUEST_CODE_PICK_IMAGE){            //相册            if (null != data) {                Uri uri = data.getData();                Log.d("xsl", "image_uri:" + uri);                String img_path = Utilty.getPathFromKitKat(getApplicationContext(), uri);                todoImageWithPatn(img_path);            }        }else if (requestCode == REQUEST_CODE_CAPTURE_CAMERA) {            //相机            if (null != data) {                Uri uri = data.getData();                Log.d("xsl", "camera_uri:" + uri);                if (uri == null) {                    Bundle bundle = data.getExtras();                    if (bundle != null) {                        Bitmap photo = (Bitmap) bundle.get("data");                        saveImage(photo, ima_path);                    } else {                        Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_SHORT).show();                    }                } else {                    //TODO do find the path of pic by uri                }            }        }else if (requestCode == REQUEST_CODE_REL_CAPTURE_CAMERA){            if (null != data){                Log.d("xsl", "data_extra: " + data.getExtras());            }else {                Log.d("xsl", "data is null !");            }            todoImageWithPatn(rel_ima_path);        }else if (requestCode == REQUEST_CODE_CROP_CAPTURE_CAMERA) {            Intent intent = new Intent("com.android.camera.action.CROP");            intent.setDataAndType(Uri.fromFile(new File(rel_ima_path)), "image/*");            intent.putExtra("scale", true);            intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(rel_ima_path)));            startActivityForResult(intent, REQUEST_CODE_REL_CAPTURE_CAMERA);        }    }    private void todoImageWithPatn(String ima_path) {        txt_img_path.setText("path: " + ima_path);//        img.setImageDrawable(Drawable.createFromPath(ima_path));        try {            img.setImageDrawable(Drawable.createFromStream(new FileInputStream(ima_path),System.currentTimeMillis()+"ss.jpg"));        } catch (Exception e) {            e.printStackTrace();        }    }    private void saveImage(Bitmap photo, String ima_path) {//        img.setImageBitmap(photo);        File file = new File(ima_path);        if (!file.exists()){            file.mkdirs();        }        BufferedOutputStream out = null;        try {            file = new File(ima_path + File.separator + System.currentTimeMillis() +".jpg");            file.createNewFile();            out = new BufferedOutputStream(new FileOutputStream(file.getPath(),false));            Log.d("xsl","image_path: "+file.getPath());            photo.compress(Bitmap.CompressFormat.JPEG, 100, out);            out.flush();            todoImageWithPatn(file.getPath());        } catch (Exception e) {            e.printStackTrace();        }finally {            if (null != out){                try {                    out.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initViews();        viewEvents();    }    private void initViews() {        btn_get_crop_from_album = (Button) findViewById(R.id.btn_get_crop_from_album);        btn_get_crop_from_camera = (Button) findViewById(R.id.btn_get_crop_from_camera);        btn_get_from_album = (Button) findViewById(R.id.btn_get_from_album);        btn_get_from_camera = (Button) findViewById(R.id.btn_get_from_camera);        btn_get_rel_from_camera = (Button) findViewById(R.id.btn_get_rel_from_camera);        txt_img_path = (TextView) findViewById(R.id.txt_img_path);        img = (ImageView) findViewById(R.id.img);    }    private void viewEvents() {        btn_get_crop_from_album.setOnClickListener(this);        btn_get_crop_from_camera.setOnClickListener(this);        btn_get_from_album.setOnClickListener(this);        btn_get_from_camera.setOnClickListener(this);        btn_get_rel_from_camera.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.btn_get_from_album:{                getImageFromAlbum();                break;            }            case R.id.btn_get_from_camera:{                getImageFromCamera();                break;            }            case R.id.btn_get_rel_from_camera:{                getRelImageFromCamera();                break;            }            case R.id.btn_get_crop_from_camera:{                getCropImageFromCamera();                break;            }            case R.id.btn_get_crop_from_album:{                getCropImageFromAlbum();                break;            }        }    }    public void getImageFromAlbum() {        Intent intent = new Intent(Intent.ACTION_PICK);        intent.setType("image/*");//相片类型        startActivityForResult(intent, REQUEST_CODE_PICK_IMAGE);    }    public void getImageFromCamera() {        String state = Environment.getExternalStorageState();        if (state.equals(Environment.MEDIA_MOUNTED)){            ima_path = Environment.getExternalStorageDirectory().getPath() + "/imge_temp/";            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");            startActivityForResult(intent,REQUEST_CODE_CAPTURE_CAMERA);        }else {            Toast.makeText(getApplicationContext(),"请确认已插入SD卡",Toast.LENGTH_SHORT).show();        }    }    public void getRelImageFromCamera(){        String state = Environment.getExternalStorageState();        if (state.equals(Environment.MEDIA_MOUNTED)){            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");            String out_file_path = Environment.getExternalStorageDirectory().getPath() + "/imge_temp/rel_image";            File dir = new File(out_file_path);            if (!dir.exists()){                dir.mkdirs();            }            rel_ima_path = out_file_path + File.separator + System.currentTimeMillis() + ".jpg";            intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(rel_ima_path)));            intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);            startActivityForResult(intent, REQUEST_CODE_REL_CAPTURE_CAMERA);        }    }    public void getCropImageFromCamera() {        String out_img_path = Environment.getExternalStorageDirectory().getPath() + "/imge_temp/crop_image";        File dir = new File(out_img_path);        if (!dir.exists()){            dir.mkdirs();        }        rel_ima_path = out_img_path + File.separator + System.currentTimeMillis() + ".jpg";        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");        intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(new File(rel_ima_path)));        startActivityForResult(intent,REQUEST_CODE_CROP_CAPTURE_CAMERA);    }    public void getCropImageFromAlbum() {        String out_img_path = Environment.getExternalStorageDirectory().getPath() + "/imge_temp/crop_chose";        File dir = new File(out_img_path);        if (!dir.exists()){            dir.mkdirs();        }        rel_ima_path = out_img_path + File.separator + System.currentTimeMillis() + ".jpg";//        Intent intent = new Intent("android.intent.action.GET_CONTENT");        Intent intent = new Intent(Intent.ACTION_PICK);        intent.setType("image/*");        intent.putExtra("crop", true);//        intent.putExtra("scale", true);        intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(new File(rel_ima_path)));        startActivityForResult(intent,REQUEST_CODE_REL_CAPTURE_CAMERA);    }}

utils：

package com.example.xushuailong.mydopicture.utils;import android.annotation.TargetApi;import android.content.ContentUris;import android.content.Context;import android.database.Cursor;import android.net.Uri;import android.os.Build;import android.os.Environment;import android.provider.DocumentsContract;import android.provider.MediaStore;@TargetApi(Build.VERSION_CODES.KITKAT)public class Utilty {/** * 在android4.4上获取资源的路径 *  * @param context * @param uri * @return */public static String getPathFromKitKat(final Context context, final Uri uri) {final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;// DocumentProviderif (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {// ExternalStorageProviderif (isExternalStorageDocument(uri)) {final String docId = DocumentsContract.getDocumentId(uri);final String[] split = docId.split(":");final String type = split[0];if ("primary".equalsIgnoreCase(type)) {return Environment.getExternalStorageDirectory() + "/"+ split[1];}// TODO handle non-primary volumes}// DownloadsProviderelse if (isDownloadsDocument(uri)) {final String id = DocumentsContract.getDocumentId(uri);final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),Long.valueOf(id));return getDataColumn(context, contentUri, null, null);}// MediaProviderelse if (isMediaDocument(uri)) {final String docId = DocumentsContract.getDocumentId(uri);final String[] split = docId.split(":");final String type = split[0];Uri contentUri = null;if ("image".equals(type)) {contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;} else if ("video".equals(type)) {contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;} else if ("audio".equals(type)) {contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;}final String selection = "_id=?";final String[] selectionArgs = new String[] { split[1] };return getDataColumn(context, contentUri, selection,selectionArgs);}}// MediaStore (and general)else if ("content".equalsIgnoreCase(uri.getScheme())) {// Return the remote addressif (isGooglePhotosUri(uri))return uri.getLastPathSegment();return getDataColumn(context, uri, null, null);}// Fileelse if ("file".equalsIgnoreCase(uri.getScheme())) {return uri.getPath();}return null;}public static String getDataColumn(Context context, Uri uri,String selection, String[] selectionArgs) {Cursor cursor = null;final String column = "_data";final String[] projection = { column };try {cursor = context.getContentResolver().query(uri, projection,selection, selectionArgs, null);if (cursor != null && cursor.moveToFirst()) {final int index = cursor.getColumnIndexOrThrow(column);return cursor.getString(index);}} finally {if (cursor != null)cursor.close();}return null;}public static boolean isExternalStorageDocument(Uri uri) {return "com.android.externalstorage.documents".equals(uri.getAuthority());}public static boolean isDownloadsDocument(Uri uri) {return "com.android.providers.downloads.documents".equals(uri.getAuthority());}public static boolean isMediaDocument(Uri uri) {return "com.android.providers.media.documents".equals(uri.getAuthority());}public static boolean isGooglePhotosUri(Uri uri) {return "com.google.android.apps.photos.content".equals(uri.getAuthority());}}

activity_layout::

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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"    tools:context="com.example.xushuailong.mydopicture.MainActivity">    <LinearLayout        android:orientation="vertical"        android:layout_width="match_parent"        android:layout_height="match_parent">        <Button            android:id="@+id/btn_get_from_album"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="get pic from album"/>        <Button            android:id="@+id/btn_get_crop_from_album"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="get crop pic from album"/>        <Button            android:id="@+id/btn_get_from_camera"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="get pic from camera"/>         <Button            android:id="@+id/btn_get_rel_from_camera"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="get rel pic from camera"/>       <Button            android:id="@+id/btn_get_crop_from_camera"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="get crop pic from camera"/>        <TextView            android:text="img_path: "            android:maxLines="2"            android:id="@+id/txt_img_path"            android:layout_width="match_parent"            android:layout_height="48dp" />        <ImageView            android:src="@mipmap/ic_launcher"            android:id="@+id/img"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:scaleType="fitCenter"/>    </LinearLayout></RelativeLayout>

这部分程序功能的bug是，当从相册选择的图片或拍照的图片太大的时候，ImageView就显示不出来图片，有待于进一步的优化。。。。

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