android 在SDCard获取图片
16lz
2021-01-23
主类：package com.dianxing.xiawenqaun;import java.io.File;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.app.ProgressDialog;import android.content.ContentResolver;import android.content.ContentUris;import android.content.DialogInterface;import android.content.Intent;import android.content.DialogInterface.OnKeyListener;import android.database.Cursor;import android.graphics.Bitmap;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.provider.MediaStore;import android.view.KeyEvent;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;public class TestPicture extends Activity {private final int INSERT_PICTURE_DIALOG = 1;private final int SHOW_PROGRESS_DIALOG = 0;private final int TAKE_PICTURE = 0;private final int LOCAL_PICTURE = 1;private final int CROP_IMAGE = 3;private final int CHANGING_SUCCESSED = 100;private final int ICON_SIZE = 96;private File mFilePath;public static final String IMAGEDATA = "imageData ";public static final String IMAGE_FILESUFFIX = "imageFileSuffix";private final String IMAGE_DATA = "data";// 文件保存路径public static final String SAVE_FILE_PATH_DIRECTORY = Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + "dianxing";private ImageView imageView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); imageView = (ImageView) this.findViewById(R.id.imageView); Button button = (Button) this.findViewById(R.id.bnt); button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {showDialog(INSERT_PICTURE_DIALOG);}}); imageView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {}}); }@Overrideprotected Dialog onCreateDialog(int id) {// TODO Auto-generated method stubswitch (id) {case SHOW_PROGRESS_DIALOG: {final ProgressDialog dialog = new ProgressDialog(this);dialog.setMessage("头像上传");dialog.setIndeterminate(true);dialog.setCancelable(true);dialog.setOnKeyListener(new OnKeyListener() {@Overridepublic boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {TestPicture.this.removeDialog(SHOW_PROGRESS_DIALOG);}return false;}});return dialog;}case INSERT_PICTURE_DIALOG: {return new AlertDialog.Builder(this).setTitle(R.string.str_modify_head_portrait).setItems(R.array.insert_picture, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {switch (which) {case TAKE_PICTURE: {if (checkSDCard()) {if (checkFileDirectory()) {final Intent i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);mFilePath = new File(SAVE_FILE_PATH_DIRECTORY, ""+ System.currentTimeMillis() + ".jpg");final Uri localUri = Uri.fromFile(mFilePath);i.putExtra(MediaStore.EXTRA_OUTPUT, localUri);startActivityForResult(i, TAKE_PICTURE);} else {System.out.println("no found Directory");}} else {Toast.makeText(TestPicture.this, "SDCard不存在", 0).show();}break;}case LOCAL_PICTURE: {if (checkSDCard()) {final Uri localUri = MediaStore.Images.Media.INTERNAL_CONTENT_URI;final Intent intent = new Intent(Intent.ACTION_PICK, localUri);startActivityForResult(intent, LOCAL_PICTURE);} else {Toast.makeText(TestPicture.this, "SDCard不存在", 0).show();}break;}}dismissDialog(INSERT_PICTURE_DIALOG);}}).create();}}return super.onCreateDialog(id);} /** * 检查SD卡是否存在 * * @return */public static boolean checkSDCard() {final String status = Environment.getExternalStorageState();if (status.equals(Environment.MEDIA_MOUNTED)) {return true;}return false;} /** * check file directory exists. * * @return boolean */public static boolean checkFileDirectory() {final File dir = new File(SAVE_FILE_PATH_DIRECTORY);if (!dir.exists()) {final boolean isMkdirs = dir.mkdirs();return isMkdirs;}return true;}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {switch (requestCode) {case LOCAL_PICTURE: {final Uri uri = data.getData();System.out.println("LOCAL_PICTURE uri = " + uri);gotoCropImageActivity(uri);break;}case TAKE_PICTURE: {// 重新扫描sd卡showDialog(SHOW_PROGRESS_DIALOG);new Thread(new Runnable() {@Overridepublic void run() {final Uri scanFile = Uri.parse("file://" + mFilePath);sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, scanFile));try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}getHeadSettingHandler.sendEmptyMessage(CHANGING_SUCCESSED);}}).start();break;}case CROP_IMAGE: {Bundle bundle = data.getExtras();imageView.setImageBitmap((Bitmap)bundle.getParcelable(IMAGE_DATA));// 在这里进行联网，把图像的数据上传至服务器break;}default:break;}}}/** * 跳转裁切界面 * * @param uri */private void gotoCropImageActivity(Uri uri) {if (uri == null) {Uri imgUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;ContentResolver cr = getContentResolver();Cursor cursor = cr.query(imgUri, null, MediaStore.Images.Media.DISPLAY_NAME, null, null);if (cursor != null && cursor.getCount() > 0) {final int countryIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media._ID);cursor.moveToLast();long id = cursor.getLong(countryIndex);uri = ContentUris.withAppendedId(imgUri, id);}} final Intent intent = getCropImageIntent(uri); startActivityForResult(intent, CROP_IMAGE);}public Intent getCropImageIntent(Uri photoUri) { Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(photoUri, "image/*"); intent.putExtra("crop", "true"); // 设定长宽比 intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // 设定输出位图大小 intent.putExtra("outputX", ICON_SIZE); intent.putExtra("outputY", ICON_SIZE); // true返回一个位图，false直接保存剪裁这张图像 intent.putExtra("return-data", true); return intent; }private Handler getHeadSettingHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);int what = msg.what;switch (what) {case CHANGING_SUCCESSED:removeDialog(SHOW_PROGRESS_DIALOG);gotoCropImageActivity(null);break;}}};} package com.dianxing.xiawenqaun;public class Base64 { private static final byte[] encodingTable = { (byte) 'A', (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F', (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K', (byte) 'L', (byte) 'M', (byte) 'N', (byte) 'O', (byte) 'P', (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U', (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y', (byte) 'Z', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e', (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j', (byte) 'k', (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o', (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't', (byte) 'u', (byte) 'v', (byte) 'w', (byte) 'x', (byte) 'y', (byte) 'z', (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) '+', (byte) '/' }; private static final byte[] decodingTable; static { decodingTable = new byte[128]; for (int i = 0; i < 128; i++) { decodingTable[i] = (byte) -1; } for (int i = 'A'; i <= 'Z'; i++) { decodingTable[i] = (byte) (i - 'A'); } for (int i = 'a'; i <= 'z'; i++) { decodingTable[i] = (byte) (i - 'a' + 26); } for (int i = '0'; i <= '9'; i++) { decodingTable[i] = (byte) (i - '0' + 52); } decodingTable['+'] = 62; decodingTable['/'] = 63; } public static byte[] encode(byte[] data) { byte[] bytes; int modulus = data.length % 3; if (modulus == 0) { bytes = new byte[(4 * data.length) / 3]; } else { bytes = new byte[4 * ((data.length / 3) + 1)]; } int dataLength = (data.length - modulus); int a1; int a2; int a3; for (int i = 0, j = 0; i < dataLength; i += 3, j += 4) { a1 = data[i] & 0xff; a2 = data[i + 1] & 0xff; a3 = data[i + 2] & 0xff; bytes[j] = encodingTable[(a1 >>> 2) & 0x3f]; bytes[j + 1] = encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]; bytes[j + 2] = encodingTable[((a2 << 2) | (a3 >>> 6)) & 0x3f]; bytes[j + 3] = encodingTable[a3 & 0x3f]; } int b1; int b2; int b3; int d1; int d2; switch (modulus) { case 0: /* nothing left to do */ break; case 1: d1 = data[data.length - 1] & 0xff; b1 = (d1 >>> 2) & 0x3f; b2 = (d1 << 4) & 0x3f; bytes[bytes.length - 4] = encodingTable[b1]; bytes[bytes.length - 3] = encodingTable[b2]; bytes[bytes.length - 2] = (byte) '='; bytes[bytes.length - 1] = (byte) '='; break; case 2: d1 = data[data.length - 2] & 0xff; d2 = data[data.length - 1] & 0xff; b1 = (d1 >>> 2) & 0x3f; b2 = ((d1 << 4) | (d2 >>> 4)) & 0x3f; b3 = (d2 << 2) & 0x3f; bytes[bytes.length - 4] = encodingTable[b1]; bytes[bytes.length - 3] = encodingTable[b2]; bytes[bytes.length - 2] = encodingTable[b3]; bytes[bytes.length - 1] = (byte) '='; break; } return bytes; } public static byte[] decode(byte[] data) { byte[] bytes; byte b1; byte b2; byte b3; byte b4; data = discardNonBase64Bytes(data); if (data[data.length - 2] == '=') { bytes = new byte[(((data.length / 4) - 1) * 3) + 1]; } else if (data[data.length - 1] == '=') { bytes = new byte[(((data.length / 4) - 1) * 3) + 2]; } else { bytes = new byte[((data.length / 4) * 3)]; } for (int i = 0, j = 0; i < (data.length - 4); i += 4, j += 3) { b1 = decodingTable[data[i]]; b2 = decodingTable[data[i + 1]]; b3 = decodingTable[data[i + 2]]; b4 = decodingTable[data[i + 3]]; bytes[j] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[j + 1] = (byte) ((b2 << 4) | (b3 >> 2)); bytes[j + 2] = (byte) ((b3 << 6) | b4); } if (data[data.length - 2] == '=') { b1 = decodingTable[data[data.length - 4]]; b2 = decodingTable[data[data.length - 3]]; bytes[bytes.length - 1] = (byte) ((b1 << 2) | (b2 >> 4)); } else if (data[data.length - 1] == '=') { b1 = decodingTable[data[data.length - 4]]; b2 = decodingTable[data[data.length - 3]]; b3 = decodingTable[data[data.length - 2]]; bytes[bytes.length - 2] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[bytes.length - 1] = (byte) ((b2 << 4) | (b3 >> 2)); } else { b1 = decodingTable[data[data.length - 4]]; b2 = decodingTable[data[data.length - 3]]; b3 = decodingTable[data[data.length - 2]]; b4 = decodingTable[data[data.length - 1]]; bytes[bytes.length - 3] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[bytes.length - 2] = (byte) ((b2 << 4) | (b3 >> 2)); bytes[bytes.length - 1] = (byte) ((b3 << 6) | b4); } return bytes; } public static byte[] decode(String data) { byte[] bytes; byte b1; byte b2; byte b3; byte b4; data = discardNonBase64Chars(data); if (data.charAt(data.length() - 2) == '=') { bytes = new byte[(((data.length() / 4) - 1) * 3) + 1]; } else if (data.charAt(data.length() - 1) == '=') { bytes = new byte[(((data.length() / 4) - 1) * 3) + 2]; } else { bytes = new byte[((data.length() / 4) * 3)]; } for (int i = 0, j = 0; i < (data.length() - 4); i += 4, j += 3) { b1 = decodingTable[data.charAt(i)]; b2 = decodingTable[data.charAt(i + 1)]; b3 = decodingTable[data.charAt(i + 2)]; b4 = decodingTable[data.charAt(i + 3)]; bytes[j] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[j + 1] = (byte) ((b2 << 4) | (b3 >> 2)); bytes[j + 2] = (byte) ((b3 << 6) | b4); } if (data.charAt(data.length() - 2) == '=') { b1 = decodingTable[data.charAt(data.length() - 4)]; b2 = decodingTable[data.charAt(data.length() - 3)]; bytes[bytes.length - 1] = (byte) ((b1 << 2) | (b2 >> 4)); } else if (data.charAt(data.length() - 1) == '=') { b1 = decodingTable[data.charAt(data.length() - 4)]; b2 = decodingTable[data.charAt(data.length() - 3)]; b3 = decodingTable[data.charAt(data.length() - 2)]; bytes[bytes.length - 2] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[bytes.length - 1] = (byte) ((b2 << 4) | (b3 >> 2)); } else { b1 = decodingTable[data.charAt(data.length() - 4)]; b2 = decodingTable[data.charAt(data.length() - 3)]; b3 = decodingTable[data.charAt(data.length() - 2)]; b4 = decodingTable[data.charAt(data.length() - 1)]; bytes[bytes.length - 3] = (byte) ((b1 << 2) | (b2 >> 4)); bytes[bytes.length - 2] = (byte) ((b2 << 4) | (b3 >> 2)); bytes[bytes.length - 1] = (byte) ((b3 << 6) | b4); } return bytes; } private static byte[] discardNonBase64Bytes(byte[] data) { byte[] temp = new byte[data.length]; int bytesCopied = 0; for (int i = 0; i < data.length; i++) { if (isValidBase64Byte(data[i])) { temp[bytesCopied++] = data[i]; } } byte[] newData = new byte[bytesCopied]; System.arraycopy(temp, 0, newData, 0, bytesCopied); return newData; } private static String discardNonBase64Chars(String data) { StringBuffer sb = new StringBuffer(); int length = data.length(); for (int i = 0; i < length; i++) { if (isValidBase64Byte((byte) (data.charAt(i)))) { sb.append(data.charAt(i)); } } return sb.toString(); } private static boolean isValidBase64Byte(byte b) { if (b == '=') { return true; } else if ((b < 0) || (b >= 128)) { return false; } else if (decodingTable[b] == -1) { return false; } return true; }} array.xml<?xml version="1.0" encoding="utf-8"?><resources><!-- 修改头像 --><string-array name="insert_picture"><item>@string/str_take_picture</item><item>@string/str_local_picture</item></string-array></resources>
String.xml<?xml version="1.0" encoding="utf-8"?><resources> <string name="hello">Hello World, TestPicture!</string> <string name="app_name">测试图片上传</string> <string name="str_take_picture">拍照上传</string><string name="str_local_picture">本地图片上传</string><string name="str_modify_head_portrait">修改头像</string></resources>
main.xml
main.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><Button android:id="@+id/bnt" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="上传头像"/> <ImageView android:id="@+id/imageView" android:layout_marginLeft="50dip"android:layout_width="200dip" android:layout_height="200dip" /></LinearLayout>
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