我的应用应该使用相机拍照，然后将它们保存到SQLite数据库。这是通过打开相机拍摄照片，然后将图像返回到图像视图，用户然后单击“保存”将图像保留到数据库中。
问题
将图像返回到图像视图并且用户单击保存按钮后，应用程序冻结，显示的唯一内容是“不幸的是，连衣裙（应用程序的名称）已停止响应”中没有错误
我尝试了什么
我已经尝试通过注释我们的函数进行一些调试，并将其缩小到db.open（）函数，所以看起来好像一旦它尝试与数据库进行任何连接就会冻结。我之前从未使用过android或android数据库（专家级别菜鸟），而且我已经做得足够多，仍然无法解决问题。
这就是我一直在使用的教程
http://www.youtube.com/watch?v=Xq8m82zgt1s
//This file triggers the camera returns the images and makes the call to the database
package dress.advance;
import java.io.FileNotFoundException;
import org.apache.http.util.EntityUtils;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class Upload extends Activity {
protected static final int SELECT_IMAGE = 0;
protected static final int CAMERA_ACTIVITY = 0;
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
protected static final String Upload = null;
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 0;
private int count = 0;
private Uri fileUri;
DBAdapter link;
ImageView CaputredImage;
ImageView browsedImage;
Bitmap theCapturedImage;
private static int RESULT_LOAD_IMAGE = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
browsedImage=(ImageView) findViewById(R.id.ImageBrowse);
Button browseButton = (Button) findViewById(R.id.browse);
browseButton.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
//startActivityForResult(new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI), SELECT_IMAGE);
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
Button save = (Button) findViewById(R.id.ImageSaveButton);
save.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
if(!(CaputredImage == null)){
Img testim = new Img(theCapturedImage, "img"+getCount());
link.open();
/*link.createImgEntry(testim);
link.close();
*/
}
}
});
CaputredImage=(ImageView) findViewById(R.id.ImageCapture);
//Declaration of button to link to camera trigger
Button CaptureButton = (Button) findViewById(R.id.capture);
//Listener for button
CaptureButton.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
Intent startCamera = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(startCamera, 0);
Intent mIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
mIntent.putExtra(MediaStore.EXTRA_OUTPUT,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI.toString());
startActivityForResult(mIntent, CAMERA_ACTIVITY);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode == 0){
super.onActivityResult(requestCode, resultCode, data);
//setCount(getCount() + 1);
theCapturedImage = (Bitmap) data.getExtras().get("data");
CaputredImage.setImageBitmap(theCapturedImage);
fileUri = getOutputMediaFileUri(Upload); // create a file to save the image
data.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
Img testim = new Img(theCapturedImage, "img"+getCount());
link.open();
link.createImgEntry(testim);
link.close();
}
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
browsedImage.setImageBitmap(BitmapFactory.decodeFile(picturePath));
ContentResolver cr = getContentResolver();
try {
Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(cr, "", "name", "now"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}}
private Uri getOutputMediaFileUri(String upload2) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
}
// this is my db helpper
package dress.advance;
import java.io.ByteArrayOutputStream;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
public class DBAdapter {
public final static String Key_ROWID = "_id";
public final static String Key_NAME = "name";
public final static String TAG = "socialNatwork";
public final static String DATABASE_NAME = "SocialNetwork";
public final static String Key_IMG = "image";
public final static String DATABASE_TABLE = "PESITIMAGE";
public final static int DATABASE_VERSION = 1;
//i think the problem might be here
public final static String DATABASE_CREATES =
"create table PESITIMAGE(_id integer primary key autoincrement, image BLOB not null, name text not null); ";
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
private Context context;
public DBAdapter (Context ctx){
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper{
DatabaseHelper(Context context){
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
Log.i(TAG, "Creating the database");
db.execSQL(DATABASE_CREATES);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
Log.w(TAG, "upgrading database from version" + oldVersion
+ " to"
+ newVersion +", which will destroy all data");
db.execSQL("DROP TABLE IF EXIST PESITIMAGE");
onCreate(db);
}
}
public DBAdapter open() throws SQLException{
Log.i(TAG, "opening the database");
db = DBHelper.getWritableDatabase();
return this;
}
public void close(){
Log.i(TAG, "closing the database");
db = DBHelper.getWritableDatabase();
DBHelper.close();
}
public void createImgEntry(Img img){
ByteArrayOutputStream out = new ByteArrayOutputStream();
img.getBitmap().compress(Bitmap.CompressFormat.PNG, 100, out);
ContentValues cv = new ContentValues();
cv.put(Key_IMG, out.toByteArray());
cv.put(Key_NAME, img.getName());
long j = db.insert(DATABASE_TABLE, null, cv);
Log.i("Sakshi", String.valueOf(j));
}
public Img getFirstImgFormats() throws SQLException{
Cursor cur = db.query(true,
DATABASE_TABLE,
new String[]{Key_IMG, Key_NAME},
null, null, null, null, null, null);
if(cur.moveToFirst()){
byte[] blob = cur.getBlob(cur.getColumnIndex(Key_IMG));
Bitmap bmp = BitmapFactory.decodeByteArray(blob, 0, blob.length);
String name = cur.getString(cur.getColumnIndex(Key_NAME));
cur.close();
return new Img(bmp,name);
}
cur.close();
return null;
}
public Img getImgFromDB(String n) throws SQLException{
Cursor cur = db.query(true,
DATABASE_TABLE,
new String[]{Key_IMG, Key_NAME},
Key_NAME+"=\""+n+"\"", null, null, null, null, null);
if(cur.moveToFirst()){
byte[] blob = cur.getBlob(cur.getColumnIndex(Key_IMG));
Bitmap bmp = BitmapFactory.decodeByteArray(blob, 0, blob.length);
String name = cur.getString(cur.getColumnIndex(Key_NAME));
cur.close();
return new Img(bmp,name);
}
cur.close();
return null;
}
public Img getImg() throws SQLException{
Cursor cur = db.query(true,
DATABASE_TABLE,
new String[]{Key_IMG, Key_NAME},
null, null, null, null, null, null);
if(cur.moveToLast()){
byte[] blob = cur.getBlob(cur.getColumnIndex(Key_IMG));
Bitmap bmp = BitmapFactory.decodeByteArray(blob, 0, blob.length);
String name = cur.getString(cur.getColumnIndex(Key_NAME));
cur.close();
return new Img(bmp,name);
}
cur.close();
return null;
}
}