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buckyrobertsbuckyroberts
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Merge pull request #61 from glwhitney/master
Contributions to Android
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‎Android_Beginners/011-012 User Interface/012 User Interface.txt

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[source code] Android Development Tutorials - 11 & 12 - User Interface
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***** Main Activity.java
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package your.package.name
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import android.support.v7.app.AppCompatActivity;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuItem;
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public class MainActivity extends AppCompatActivity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.menu_main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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***** activity_main.xml
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
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android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
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android:paddingRight="@dimen/activity_horizontal_margin"
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android:paddingTop="@dimen/activity_vertical_margin"
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android:paddingBottom="@dimen/activity_vertical_margin"
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tools:context="glwhitney.info.nbvideos11_12.MainActivity">
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:textAppearance="?android:attr/textAppearanceLarge"
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android:text="@string/SignInTitle"
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android:id="@+id/textView"
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android:layout_alignParentTop="true"
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android:layout_alignParentLeft="true"
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android:layout_alignParentStart="true"
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android:singleLine="true"/>
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<EditText
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:inputType="textEmailAddress"
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android:ems="10"
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android:id="@+id/editText"
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android:layout_below="@+id/textView"
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android:layout_centerHorizontal="true"
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android:layout_marginTop="36dp"
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android:width="320dp"/>
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<EditText
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:inputType="textPassword"
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android:ems="10"
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android:id="@+id/editText2"
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android:layout_marginTop="45dp"
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android:layout_below="@+id/editText"
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android:layout_alignLeft="@+id/editText"
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android:layout_alignStart="@+id/editText"
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android:width="320dp"/>
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<Button
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/SignInButtonText"
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android:id="@+id/button"
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android:layout_centerVertical="true"
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android:layout_centerHorizontal="true" />
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</RelativeLayout>
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***** strings.xml
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<resources>
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<string name="app_name">NB Videos 11_12</string>
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<string name="title_activity_main">MainActivity</string>
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<string name="hello_world">Hello world!</string>
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<string name="action_settings">Settings</string>
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<string name="SignInTitle">Sign In</string>
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<string name="SignInButtonText">Log In</string>
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</resources>

‎Android_Beginners/013-016 Java Layout/013-016 Java Layout.txt

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/* API23 WARNING
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* This activity was created with API21 when ActioinBarActivity was not depreciated.
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* IF you are using API23 or later then you will need to extend AppCompatActivity
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*/
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****** MainActivity
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package your.package.name
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import android.support.v7.app.ActionBarActivity;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.widget.RelativeLayout;
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import android.widget.Button;
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import android.graphics.Color;
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import android.widget.EditText;
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import android.content.res.Resources;
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import android.util.TypedValue;
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public class MainActivity extends ActionBarActivity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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//Layout
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RelativeLayout buckysLayout = new RelativeLayout(this);
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buckysLayout.setBackgroundColor(Color.GREEN);
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//Button
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Button redButton = new Button(this);
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redButton.setText("Log In");
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redButton.setBackgroundColor(Color.RED);
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//Username input
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EditText username = new EditText(this);
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redButton.setId(1);
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username.setId(2);
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RelativeLayout.LayoutParams buttonDetails = new RelativeLayout.LayoutParams(
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RelativeLayout.LayoutParams.WRAP_CONTENT,
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RelativeLayout.LayoutParams.WRAP_CONTENT
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);
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RelativeLayout.LayoutParams usernameDetails = new RelativeLayout.LayoutParams(
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RelativeLayout.LayoutParams.WRAP_CONTENT,
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RelativeLayout.LayoutParams.WRAP_CONTENT
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);
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//Give rules to position widgets
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usernameDetails.addRule(RelativeLayout.ABOVE, redButton.getId());
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usernameDetails.addRule(RelativeLayout.CENTER_HORIZONTAL);
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usernameDetails.setMargins(0,0,0,50);
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buttonDetails.addRule(RelativeLayout.CENTER_HORIZONTAL);
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buttonDetails.addRule(RelativeLayout.CENTER_VERTICAL);
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Resources r = getResources();
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int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,200,
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r.getDisplayMetrics()
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);
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username.setWidth(px);
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//Add widget to layout(button is now a child of layout)
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buckysLayout.addView(redButton, buttonDetails);
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buckysLayout.addView(username, usernameDetails);
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//Set this activities content/display to this view
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setContentView(buckysLayout);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.menu_main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}

‎Android_Beginners/017 GridLayout/017 GridLayout.txt

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[source code] Android Development Tutorial - 17 GridLayout
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***** MainActivity.java
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package your.package.name;
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import android.support.v7.app.AppCompatActivity;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuItem;
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public class MainActivity extends AppCompatActivity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.menu_main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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***** activity_main.xml
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
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android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
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android:paddingRight="@dimen/activity_horizontal_margin"
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android:paddingTop="@dimen/activity_vertical_margin"
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android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
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<GridLayout
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignParentTop="true"
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android:layout_alignParentLeft="true"
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android:layout_alignParentStart="true">
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<Button
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Bottom"
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android:id="@+id/button4"
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android:layout_row="1"
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android:layout_column="0"
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android:layout_columnSpan="2"
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android:layout_gravity="fill_horizontal" />
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<Button
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Center"
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android:id="@+id/button"
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android:layout_row="0"
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android:layout_column="1" />
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<Button
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Left"
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android:id="@+id/button3"
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android:layout_row="0"
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android:layout_column="0" />
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<Button
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Right"
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android:id="@+id/button2"
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android:layout_row="0"
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android:layout_column="2"
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android:layout_rowSpan="2"
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android:layout_gravity="fill_vertical" />
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</GridLayout>
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</RelativeLayout>

‎Android_Beginners/018-020 Events/018 to 19 Events.txt

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/* API23 WARNING
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* This activity was created with API21 when ActioinBarActivity was not depreciated.
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* IF you are using API23 or later then you will need to extend AppCompatActivity
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*/
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****** MainActivity
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package your.package.name
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import android.support.v7.app.ActionBarActivity;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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public class MainActivity extends ActionBarActivity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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Button buckysButton = (Button)findViewById(R.id.buckysButton);
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buckysButton.setOnClickListener(
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new Button.OnClickListener(){
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public void onClick(View v){
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TextView buckysText = (TextView)findViewById(R.id.buckysText);
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buckysText.setText("Good job Hoss!");
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}
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}
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);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.menu_main, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}

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