vxhviet

Source: StackOverflow

Personal Note: Prefer method 2 as Big Nerd Ranch's Android Programming also use this method.

Imagine that we have 3 buttons for example

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

vxhviet

Source: StackOverflow

This answer is a little late but I feel it'll be useful for future viewers. The dilemma seems to come from the ambiguity of the Android SearchView tutorial. The scenario they cover assumes you will be displaying the results in the same Activity the SearchView resides. In such a scenario, the Activity tag in the AndroidManifest.xml file would look something like this:

<activity
    android:name=".MainActivity"
    android:label="@string/main_activity_label"
    android:launchMode="singleTop">
        <intent-filter>

vxhviet

Source: StackOverflow

Question: While going through some SQL books I found that examples tend to use question marks (?) in their queries. What does it represent?

Answer: What you are seeing is a parameterized query. They are frequently used when executing dynamic SQL from a program.

For example, instead of writing this (note: pseudocode):

ODBCCommand cmd = new ODBCCommand("SELECT thingA FROM tableA WHERE thingB = 7")

vxhviet

Source: StackOverflow & StackOverflow

Question: How can I get the real path of the selected video when the results are returned?

Answer: Here is the full code for get the video path after selecting from gallery.

Intent intent = new Intent();
    intent.setType("video/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent,"Select Video"),REQUEST_TAKE_GALLERY_VIDEO);

vxhviet

Source: StackOverflow

Question: [What is the trick with 0dip layout_height or layouth_width?] (http://stackoverflow.com/questions/7220404/what-is-the-trick-with-0dip-layout-height-or-layouth-width)

Answer: There are 3 general layout attributes that work with width and height

1. android:layout_height
2. android:layout_width
3. android:layout_weight

vxhviet

Source: StackOverflow, StackOverflow, inTheCheeseFactory

Library: could use hotchemi's PermissionsDispatcher

Answer:

// Storage Permissions
    private static final int REQUEST_EXTERNAL_STORAGE = 1;
    private static String[] PERMISSIONS_STORAGE = {
            Manifest.permission.READ_EXTERNAL_STORAGE,

vxhviet

Source: StackOverflow

Question: How to detect orientation info of video?

Answer: For Api level 17+, we can extract the orientation of video: MediaMetadataRetriever

MediaMetadataRetriever m = new MediaMetadataRetriever();

m.setDataSource(path);

vxhviet

Source: StackOverflow

Question: How do I name the new files created with the current timestamp?

Answer:

String fileName = new SimpleDateFormat("yyyyMMddhhmm'.txt'").format(new Date());

vxhviet

Source: StackOverflow

Question: How do I save Bitmap to extrenal storage in Android?

Answer:

Use this function to save your bitmap in SD card:

public void saveTempBitmap(Bitmap bitmap) {
        if (isExternalStorageWritable()) {

vxhviet

Source: StackOverflow

Question: How do you have the code pause for a couple of seconds in android?

Answer: Learning to think in terms of events is indeed the key here. You can do it. :)

The first rule is: never stall the UI thread. The UI thread is responsible for keeping your app feeling responsive. Any work you do there should not block; do what you need to do and return as quickly as possible. Definitely avoid doing I/O on the UI thread. (There are some places where you can't really help it due to lifecycle requirements, for example saving app state in onPause.) If you ever call Thread.sleep on the UI thread you are doing it wrong.

Android enforces this with the "Application not responding" (or "ANR") error that the user sees. Whenever you see this in an Android app it means the developer did something that caused the UI thread to stall for too long. If the device is really