Download file from URL
Download image file from URL to ImageView Java Android source example code.
Context context = thisClass.this;
Drawable image = ImageOperations(context,
"//www.okhelp.cz/images/android/ad_4.png"
,"image.jpg");
ImageView imgView;
imgView = (ImageView)findViewById(R.id.idImageView);
imgView.setImageDrawable(image);
private Drawable ImageOperations(Context ctx, String url, String saveFilename) {
try {
InputStream is = (InputStream) this.fetch(url);
Drawable d = Drawable.createFromStream(is, "src");
return d;
} catch (MalformedURLException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
public Object fetch(String address) throws MalformedURLException,IOException {
URL url = new URL(address);
Object content = url.getContent();
return content;
}
396LW NO topic_id
AD
Další témata ....(Topics)
Switch statement with numbers and array of strings Java example.
Possible:
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "One", "Two", "Three", "Four" };
int i = 2;
switch (i) {
case 1: {
System.out.println(arrayOfString[i]);
break;
}
case 2: {
System.out.println(arrayOfString[i]);
break;
}
case 3: {
System.out.println(arrayOfString[i]);
break;
}
default: {
System.out.println("Enter a valid value.");
}
} // END of switch
}
}
/*
* Three
*/
Possible:
case 1:
System.out.println(arrayOfString[i]);
break;
// i love this notation
case 1:{
System.out.println(arrayOfString[i]);
}break;
case 1:{
System.out.println(arrayOfString[i]);
break;
}
public class Panel extends SurfaceView implements SurfaceHolder.Callback {
//............... code
//............... some code
/**
* Process the MotionEvent.
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
synchronized (getHolder()) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
performClick();
} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
if(_currentGraphic==null)return true;
} else if (event.getAction() == MotionEvent.ACTION_UP) {
}
return true;
}
}
/////////////////////////////
@Override
public boolean performClick() {
// Calls the super implementation, which generates an AccessibilityEvent
// and calls the onClick() listener on the view, if any
super.performClick();
// Handle the action for the custom click here
return true;
}
}
Warning in AndroidManifest.xml:
tag should specify a target API level (the highest verified version; when running on
later versions, compatibility behaviors may be enabled) with android:targetSdkVersion="?"
Solution:
later versions, compatibility behaviors may be enabled) with android:targetSdkVersion="?"
Solution:
<uses-sdk android:minSdkVersion="4"
android:targetSdkVersion="16" />
android:background="@android:color/transparent"
<LinearLayout
android:baselineAligned="false"
android:background="@android:color/transparent"
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<LinearLayout>
////////////////////////////
LinearLayout mLinearLayout1 = (LinearLayout)findViewById(R.id.linearLayout1);
mLinearLayout1.setBackgroundColor(Color.TRANSPARENT);
If you try function for checking internet connection you can disable internet on the emulator:
Settings - Wireless and networks - Mobile networks - Data enabled (checked - unchecked )
Settings - Wireless and networks - Mobile networks - Data enabled (checked - unchecked )
public boolean isNetworkAvailable() {
ConnectivityManager cm = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = cm.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
return true;
}
return false;
}
Editace: 2013-12-09 13:25:41
Počet článků v kategorii: 396
Url:download-file-from-url