package com.darwinsys.appdownloader.demo;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
final static String APK_NAME = "MyDemoApp.apk";
public static final String TAG = MainActivity.class.getSimpleName();
/** The URL for the target app that we want to download and install */
public static final String HTTP_DEV_MY_INSTALLEE_URL =
"http://darwinsys.com/tmp/" + APK_NAME;
final String downloadPath = Environment.getExternalStorageDirectory() + "/download/";
final File file = new File(downloadPath);
final File outputFile = new File(file, APK_NAME);
public void doDelete(View v) {
if (outputFile.exists()) {
if (outputFile.delete()) {
Toast.makeText(this, "Deleted", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Failed to Delete", Toast.LENGTH_SHORT).show();
}
} else{
Toast.makeText(this, "NO FILE", Toast.LENGTH_SHORT).show();
}
}
public void doDownload(View v) {
new MyInstallTask().execute(HTTP_DEV_MY_INSTALLEE_URL);
}
public class MyInstallTask extends AsyncTask<String, Integer, Boolean> {
/** Show spinner progresss */
@Override
protected void onPreExecute() {
MainActivity.this.setProgressBarIndeterminateVisibility(true);
}
// Do the download
@Override
protected Boolean doInBackground(String... strings) {
String apkUrl = strings[0];
try {
if (!outputFile.exists()) {
notifyFromBackground("Downloading...");
URL url = new URL(apkUrl);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setDoOutput(true);
c.connect();
file.mkdirs();
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[2048];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();
}
// Do the install
notifyFromBackground("Installing...");
Intent promptInstall = new Intent(Intent.ACTION_VIEW)
.setDataAndType(Uri.fromFile(outputFile),
"application/vnd.android.package-archive");
startActivity(promptInstall);
} catch (Exception e) {
Log.e(TAG, "Caught unexpected IOException: " + e, e);
return false;
}
return true;
}
@Override
protected void onPostExecute(Boolean b) {
MainActivity.this.setProgressBarIndeterminateVisibility(false);
}
}
/** Really should use a spinner to notify of progress; this will do for a quick demo */
private void notifyFromBackground(final String mesg) {
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(MainActivity.this, mesg, Toast.LENGTH_SHORT).show();
}
});
}
}