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:text="Click to start download" android:onClick="downloadPicture"
android:layout_height="wrap_content" android:layout_width="wrap_content" />
<ImageView android:id="@+id/imageView1"
android:layout_height="match_parent" android:layout_width="match_parent"></ImageView>
</LinearLayout>
Java File
package com.down;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class DownimageActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void downloadPicture(View view) {
final ProgressDialog dialog = ProgressDialog.show(this, "Download",
"downloading");
dialog.show();
new Thread(new Runnable() {
@Override
public void run() {
try {
final Bitmap downloadBitma = downloadBitmap("http://www.ipottechnologies.com/android/Penguins.jpg");
final ImageView imageView = (ImageView) findViewById(R.id.imageView1);
runOnUiThread(new Runnable() {
@Override
public void run() {
imageView.setImageBitmap(downloadBitma);
}
});
} catch (IOException e) {
e.printStackTrace();
} finally {
dialog.dismiss();
}
}
}).start();
}
private Bitmap downloadBitmap(String url) throws IOException {
HttpUriRequest request = new HttpGet(url.toString());
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(request);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
byte[] bytes = EntityUtils.toByteArray(entity);
Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0,
bytes.length);
return bitmap;
} else {
throw new IOException("Download failed, HTTP response code "
+ statusCode + " - " + statusLine.getReasonPhrase());
}
}
}
Android Manifest File
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<?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:text="Click to start download" android:onClick="downloadPicture"
android:layout_height="wrap_content" android:layout_width="wrap_content" />
<ImageView android:id="@+id/imageView1"
android:layout_height="match_parent" android:layout_width="match_parent"></ImageView>
</LinearLayout>
Java File
package com.down;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class DownimageActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void downloadPicture(View view) {
final ProgressDialog dialog = ProgressDialog.show(this, "Download",
"downloading");
dialog.show();
new Thread(new Runnable() {
@Override
public void run() {
try {
final Bitmap downloadBitma = downloadBitmap("http://www.ipottechnologies.com/android/Penguins.jpg");
final ImageView imageView = (ImageView) findViewById(R.id.imageView1);
runOnUiThread(new Runnable() {
@Override
public void run() {
imageView.setImageBitmap(downloadBitma);
}
});
} catch (IOException e) {
e.printStackTrace();
} finally {
dialog.dismiss();
}
}
}).start();
}
private Bitmap downloadBitmap(String url) throws IOException {
HttpUriRequest request = new HttpGet(url.toString());
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(request);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity entity = response.getEntity();
byte[] bytes = EntityUtils.toByteArray(entity);
Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0,
bytes.length);
return bitmap;
} else {
throw new IOException("Download failed, HTTP response code "
+ statusCode + " - " + statusLine.getReasonPhrase());
}
}
}
Android Manifest File
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
No comments:
Post a Comment