[android-beginners] Saving image to SD Card
I'm using Android SDK-1.0_rc2 on windows, I've emulated the sd card
and created on my D:\ drive as sdcard1.iso. My code for saving to the
SD card is as follows:
try
{
Log.e(filename,filename);
String filepath=Environment.getExternalStorageDirectory
().getAbsolutePath();
Log.e(FilePath,filepath);
FileOutputStream fos = openFileOutput(filepath +
filename, MODE_APPEND);
BufferedOutputStream bos = new BufferedOutputStream
(fos);
b.compress(CompressFormat.JPEG, 100, fos);
bos.flush();
bos.close();
}
When I view the Logcat I see the following error:
java.lang.IllegalArgumentException: File /sdcardobama.jpg contains a
path separator
So I changed the code to:
FileOutputStream fos = openFileOutput(filepath + / + filename,
MODE_APPEND);
The error is still occuring, so I tried to push the image using the
command:
adb push obama.jpg /sdcard/obama.jpg
I noticed 0 bytes are being pushed, any idea where I'm going wrong?
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[android-beginners] Re: Saving image to SD Card
I changed my code to :
FileOutputStream fos = new FileOutputStream(filepath + / +
filename);
This allowed me to save the image, I loaded the device using DDMS and
noticed the image had been saved. I've tried using the
MediaScannerConnection to refresh the sd card so that I can view the
image, I need some help with that..
On Apr 17, 2:17 pm, jwesonga crazylun...@gmail.com wrote:
I'm using Android SDK-1.0_rc2 on windows, I've emulated the sd card
and created on my D:\ drive as sdcard1.iso. My code for saving to the
SD card is as follows:
try
{
Log.e(filename,filename);
String filepath=Environment.getExternalStorageDirectory
().getAbsolutePath();
Log.e(FilePath,filepath);
FileOutputStream fos = openFileOutput(filepath +
filename, MODE_APPEND);
BufferedOutputStream bos = new BufferedOutputStream
(fos);
b.compress(CompressFormat.JPEG, 100, fos);
bos.flush();
bos.close();
}
When I view the Logcat I see the following error:
java.lang.IllegalArgumentException: File /sdcardobama.jpg contains a
path separator
So I changed the code to:
FileOutputStream fos = openFileOutput(filepath + / + filename,
MODE_APPEND);
The error is still occuring, so I tried to push the image using the
command:
adb push obama.jpg /sdcard/obama.jpg
I noticed 0 bytes are being pushed, any idea where I'm going wrong?
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You received this message because you are subscribed to the Google
Groups Android Beginners group.
To post to this group, send email to android-beginners@googlegroups.com
To unsubscribe from this group, send email to
android-beginners-unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
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[android-beginners] Re: Records not loading from database in listview
Any chance I could get some help on this please?
On Feb 6, 6:50 pm, jwesonga crazylun...@gmail.com wrote:
I've been working on a simple database app on android, I can't seem to
get it to work, all I get when I run the emulator is Users list
empty, when I check the sqlite database from the adb shell its
populated,my code is as follows:
DBDroid.java
package com.android.dbdroid;
import android.content.Context;
import android.database.sqlite.*;
import android.util.Log;
import android.database.Cursor;
import android.database.SQLException;
import java.util.ArrayList;
import java.util.List;
public class DBDroid {
private static final String DATABASE_NAME=mydroiddatabase.db;
private static final String USER_TABLE_NAME=Users;
private static final String CREATE_TABLE_USERS=CREATE TABLE IF NOT
EXISTS + USER_TABLE_NAME + (LastName VARCHAR, FirstName
VARCHAR,Country VARCHAR, Age INT(3));;
private static final int DATABASE_VERSION = 1;
private SQLiteDatabase myDb=null;
public DBDroid(Context ctx){
myDb = ctx.openOrCreateDatabase(DATABASE_NAME, 0, null);
myDb.execSQL(CREATE_TABLE_USERS);
this.createUsers();
}
public void createUsers(){
myDb.execSQL(INSERT INTO
+ USER_TABLE_NAME
+ (LastName, FirstName, Country, Age)
+ VALUES ('Gramlich', 'Nicolas', 'Germany',
20););
myDb.execSQL(INSERT INTO
+ USER_TABLE_NAME
+ (LastName, FirstName, Country, Age)
+ VALUES ('Doe', 'John', 'US', 34););
}
public ListUser getUsers() {
ArrayListUser users = new ArrayListUser();
try{
Cursor c = myDb.query(USER_TABLE_NAME, new String[] {
LastName,
FirstName,
Country,Age }, null, null, null, null, null);
int numRows = c.getCount();
c.isFirst();
if(c!=null){
for (int i = 0; i numRows; ++i) {
User user = new User();
user.lastName=c.getString(0);
user.firstName=c.getString(1);
user.country=c.getString(2);
user.age=c.getInt(3);
users.add(user);
c.moveToNext();
}
}
}catch (SQLException e){
Log.e(DBDroid, e.toString());
}
return users;
}
}
UserManager.java:
package com.android.dbdroid;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class UserManager extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.users_row);
Intent i = new Intent(getApplicationContext(),
UsersList.class);
startActivity(i);
}
}
UserList.java
package com.android.dbdroid;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class UsersList extends ListActivity{
private DBDroid droidDB;
private ListUser users;
public void onCreate(Bundle savedInstanceState) {
try{
super.onCreate(savedInstanceState);
setContentView(R.layout.users_list);
droidDB = new DBDroid(this);
fillData();
}catch(Throwable e){
Log.e(DBDroid,e.toString());
}
}
private void fillData(){
ListString items = new ArrayListString();
users=droidDB.getUsers();
for(User user:users){
items.add(user.lastName);
//items.add(user.lastName);
//items.add(user.country);
}
ArrayAdapterString adapter =
new ArrayAdapterString(this, R.layout.users_row,
items);
setListAdapter(adapter);
}
}
users_list.xml:
?xml version=1.0 encoding=utf-8?
LinearLayout
android:id=@+id/widget28
android:layout_width=fill_parent
android:layout_height=fill_parent
android:orientation=vertical
xmlns:android=http
[android-beginners] Records not loading from database in listview
I've been working on a simple database app on android, I can't seem to
get it to work, all I get when I run the emulator is Users list
empty, when I check the sqlite database from the adb shell its
populated,my code is as follows:
DBDroid.java
package com.android.dbdroid;
import android.content.Context;
import android.database.sqlite.*;
import android.util.Log;
import android.database.Cursor;
import android.database.SQLException;
import java.util.ArrayList;
import java.util.List;
public class DBDroid {
private static final String DATABASE_NAME=mydroiddatabase.db;
private static final String USER_TABLE_NAME=Users;
private static final String CREATE_TABLE_USERS=CREATE TABLE IF NOT
EXISTS + USER_TABLE_NAME + (LastName VARCHAR, FirstName
VARCHAR,Country VARCHAR, Age INT(3));;
private static final int DATABASE_VERSION = 1;
private SQLiteDatabase myDb=null;
public DBDroid(Context ctx){
myDb = ctx.openOrCreateDatabase(DATABASE_NAME, 0, null);
myDb.execSQL(CREATE_TABLE_USERS);
this.createUsers();
}
public void createUsers(){
myDb.execSQL(INSERT INTO
+ USER_TABLE_NAME
+ (LastName, FirstName, Country, Age)
+ VALUES ('Gramlich', 'Nicolas', 'Germany',
20););
myDb.execSQL(INSERT INTO
+ USER_TABLE_NAME
+ (LastName, FirstName, Country, Age)
+ VALUES ('Doe', 'John', 'US', 34););
}
public ListUser getUsers() {
ArrayListUser users = new ArrayListUser();
try{
Cursor c = myDb.query(USER_TABLE_NAME, new String[] {
LastName,
FirstName,
Country,Age }, null, null, null, null, null);
int numRows = c.getCount();
c.isFirst();
if(c!=null){
for (int i = 0; i numRows; ++i) {
User user = new User();
user.lastName=c.getString(0);
user.firstName=c.getString(1);
user.country=c.getString(2);
user.age=c.getInt(3);
users.add(user);
c.moveToNext();
}
}
}catch (SQLException e){
Log.e(DBDroid, e.toString());
}
return users;
}
}
UserManager.java:
package com.android.dbdroid;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class UserManager extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.users_row);
Intent i = new Intent(getApplicationContext(),
UsersList.class);
startActivity(i);
}
}
UserList.java
package com.android.dbdroid;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class UsersList extends ListActivity{
private DBDroid droidDB;
private ListUser users;
public void onCreate(Bundle savedInstanceState) {
try{
super.onCreate(savedInstanceState);
setContentView(R.layout.users_list);
droidDB = new DBDroid(this);
fillData();
}catch(Throwable e){
Log.e(DBDroid,e.toString());
}
}
private void fillData(){
ListString items = new ArrayListString();
users=droidDB.getUsers();
for(User user:users){
items.add(user.lastName);
//items.add(user.lastName);
//items.add(user.country);
}
ArrayAdapterString adapter =
new ArrayAdapterString(this, R.layout.users_row,
items);
setListAdapter(adapter);
}
}
users_list.xml:
?xml version=1.0 encoding=utf-8?
LinearLayout
android:id=@+id/widget28
android:layout_width=fill_parent
android:layout_height=fill_parent
android:orientation=vertical
xmlns:android=http://schemas.android.com/apk/res/android;
ListView
android:id=@android:id/android:list
android:layout_width=wrap_content
android:layout_height=wrap_content
/ListView
TextView
android:id=@+id/text1
android:layout_width=wrap_content
