[HELP] Adding a Toast message to Decompress activity - Android Q&A, Help & Troubleshooting

Hi everyone,
I am currently working on my first app which grabs a ZIP from the internet and the extracts it to a certain location. Everything works great but I can not figure out how to show a Toast message when the extraction operation is done.
The code I am using for unzipping is:
Code:
package mmarin.test.download;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/**
*
* @author jon
*/
public class Decompress{
private String _zipFile;
private String _location;
byte[] buffer = new byte[1024];
int length;
public Decompress(String zipFile, String location) {
_zipFile = zipFile;
_location = location;
_dirChecker("");
}
public void unzip() {
try {
FileInputStream fin = new FileInputStream(_zipFile);
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;
while ((ze = zin.getNextEntry()) != null) {
Log.v("Decompress", "Unzipping " + ze.getName());
if(ze.isDirectory()) {
_dirChecker(ze.getName());
} else {
FileOutputStream fout = new FileOutputStream(_location + ze.getName());
while ((length = zin.read(buffer))>0) {
fout.write(buffer, 0, length);
}
zin.closeEntry();
fout.close();
}
}
zin.close();
} catch(Exception e) {
Log.e("Decompress", "unzip", e);
}
}
private void _dirChecker(String dir) {
File f = new File(_location + dir);
if(!f.isDirectory()) {
f.mkdirs();
}
}
}
I am calling the Decompress activity through a button:
Code:
Button decompress = (Button)findViewById(R.id.button1);
decompress.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
String zipFile = Environment.getExternalStorageDirectory() + "/IPM/Splash.zip";
String unzipLocation = Environment.getExternalStorageDirectory() + "/IPM/Splash/";
Decompress d = new Decompress(zipFile, unzipLocation);
d.unzip();
}
});
I found this here: http://www.jondev.net/articles/Unzipping_Files_with_Android_(Programmatically) and it works great.
As I said above, only issue is displaying a message that everything is done.
Can someone please help me out?
Thank you!

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Moving to Q&A

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Put the toast after zin.close()

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www.stackoverflow.com
Here you can find what you want
Xperian using xda app

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http://stackoverflow.com/questions/9824772/toast-after-email-intent-message
Check this
Xperian using xda app

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RoberGalarga said:
Put the toast after zin.close()
Click to expand...
Click to collapse
Hey,
I tried this but it doesn't work. I used this statement:
Code:
Toast.makeText(this, "Extraction complete", "LENGTH_SHORT").show();
and I got this error message: The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (Decompress, String, String).
Help?

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The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (Decompress, String, String)
What the above line means is that you need to pass a Context object, a CharSequence object and an int. You are passing the wrong object types (Decompress, String, String).
The example you saw used the Toast in the activity class itself, that is why the first value passed was a this. The "LENGTH_SHORT" is actually a constant Toast.LENGTH_SHORT.
I am guessing you are making the button object in your main activity class. So i'd suggest making an additional method for the activity class that looks like this
Code:
public void displayToast(CharSequence cs)
{
Toast.makeText(this, cs, Toast.LENGTH_SHORT).show();
}
and then make the following change to your code
Code:
Button decompress = (Button)findViewById(R.id.button1);
decompress.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
String zipFile = Environment.getExternalStorageDirectory() + "/IPM/Splash.zip";
String unzipLocation = Environment.getExternalStorageDirectory() + "/IPM/Splash/";
Decompress d = new Decompress(zipFile, unzipLocation);
d.unzip();
// Add the following line
displayToast("Unzip complete");
}
});
Let me know if it worked for you.

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The_R said:
The method makeText(Context, CharSequence, int) in the type Toast is not applicable for the arguments (Decompress, String, String)
What the above line means is that you need to pass a Context object, a CharSequence object and an int. You are passing the wrong object types (Decompress, String, String).
The example you saw used the Toast in the activity class itself, that is why the first value passed was a this. The "LENGTH_SHORT" is actually a constant Toast.LENGTH_SHORT.
I am guessing you are making the button object in your main activity class. So i'd suggest making an additional method for the activity class that looks like this
Code:
public void displayToast(CharSequence cs)
{
Toast.makeText(this, cs, Toast.LENGTH_SHORT).show();
}
and then make the following change to your code
Code:
Button decompress = (Button)findViewById(R.id.button1);
decompress.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
String zipFile = Environment.getExternalStorageDirectory() + "/IPM/Splash.zip";
String unzipLocation = Environment.getExternalStorageDirectory() + "/IPM/Splash/";
Decompress d = new Decompress(zipFile, unzipLocation);
d.unzip();
// Add the following line
displayToast("Unzip complete");
}
});
Let me know if it worked for you.
Click to expand...
Click to collapse
PERFECT! You're amazing!