In my activity I am displaying splash(splash.xml) screen for 5 sec and then I am changing content view to my actual layout of main activity(activity_main). But when I am trying to use the components in the my main activity layout(activity_main) I am getting null pointer exception.
Main Activity is
public class MainActivity extends ActionBarActivity {
ProgressBar progressBar2;
EditText userName,password;
static String url;
JSONObject reader;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
new CountDownTimer(5000,1000){
#Override
public void onTick(long millisUntilFinished){}
#Override
public void onFinish(){
//set the new Content of your activity
MainActivity.this.setContentView(R.layout.activity_main);
}
}.start();
progressBar2=(ProgressBar)findViewById(R.id.progressBar2);
progressBar2.setVisibility(View.GONE);
userName=(EditText)findViewById(R.id.userName);
password=(EditText)findViewById(R.id.password);
}
}
when I use any of this components I am getting null pointer exception.
My splash Screen layout file splash.xml
<RelativeLayout
android:layout_height="match_parent"
android:background="#drawable/ic_launcher_web">
<ProgressBar
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/progressBar"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="111dp"
/>
</RelativeLayout>
and the main layout(activity_main.xml is)
<LinearLayout
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:orientation="vertical"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity"
android:weightSum="1">
<EditText
android:layout_width="match_parent"
android:hint="Username"
android:layout_height="wrap_content"
android:id="#+id/userName"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/password"
android:hint="Password"/>
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remember me"
android:id="#+id/checkBox"
android:checked="false"
/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Login"
android:id="#+id/button"
android:onClick="login"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Signup"
android:id="#+id/button3"
android:onClick="signUp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:gravity="center">
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/progressBar2"/>
</LinearLayout>
</LinearLayout>
Because your
#Override
public void onFinish(){
//set the new Content of your activity
MainActivity.this.setContentView(R.layout.activity_main);
}
will be executed after 5 seconds.
Set your layout
setContentView(R.layout.activity_main);
before progressBar2=(ProgressBar)findViewById(R.id.progressBar2);
Related
Here is my MainActivity:
public class MainActivity extends AppCompatActivity {
private LinearLayout mStatusBarAllContents;
private FrameLayout mStatusBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mStatusBar = findViewById(R.id.status_bar);
mStatusBarAllContents = findViewById(R.id.status_bar_all_contents);
mStatusBar.setOnClickListener(v -> {
Log.d("TAG", "status");
});
mStatusBarAllContents.setOnClickListener(v -> {
Log.d("TAG", "statusall");
});
}
My Layout:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/status_bar"
android:layout_width="match_parent"
android:layout_height="60px"
android:background="#drawable/sysheader_bg"
android:descendantFocusability="afterDescendants"
android:orientation="vertical">
<ImageView
android:id="#+id/notification_lights_out"
android:layout_width="22dip"
android:layout_height="match_parent"
android:paddingStart="6dp"
android:paddingBottom="2dip"
android:scaleType="center"
android:visibility="gone"
tools:ignore="RtlCompat" />
<LinearLayout
android:id="#+id/status_bar_all_contents"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal">
<FrameLayout
android:layout_width="174px"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/clock_relativelayout"
android:layout_width="174px"
android:layout_height="match_parent"
android:clickable="true"
android:visibility="visible">
<TextView
android:id="#+id/clock_hour"
android:layout_width="60px"
android:layout_height="54px"
android:gravity="center"
android:includeFontPadding="false"
android:text="05"
android:textColor="#color/white"
android:textSize="52px"
android:textStyle="bold" />
<ImageView
android:id="#+id/clock_coron"
android:layout_width="12px"
android:layout_height="48px"
android:layout_marginTop="9px"
android:layout_toRightOf="#+id/clock_hour"
android:scaleType="fitCenter"
android:src="#drawable/num_12x48_colon" />
<TextView
android:layout_width="60px"
android:layout_height="54px"
android:layout_toRightOf="#+id/clock_coron"
android:gravity="center"
android:includeFontPadding="false"
android:text="30"
android:textColor="#color/white"
android:textSize="52px"
android:textStyle="bold">
</TextView>
</RelativeLayout>
</FrameLayout>
<LinearLayout
android:id="#+id/status_bar_info_layout"
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:clickable="true"
android:visibility="visible">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/audio_area"
android:layout_width="786px"
android:layout_height="match_parent"
android:background="#drawable/da_header_sections_background_click_over_info"
android:clickable="true"
android:orientation="horizontal"
android:splitMotionEvents="false">
<FrameLayout
android:id="#+id/audio_info_area"
android:layout_width="708px"
android:layout_height="match_parent"
android:clickable="false">
<TextView
android:id="#+id/audio_info"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginStart="18px"
android:layout_marginLeft="18px"
android:ellipsize="end"
android:gravity="left"
android:singleLine="true"
android:text="ALOLO"
android:textSize="20sp"
android:visibility="visible" />
<LinearLayout
android:id="#+id/audio_off"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingStart="24px"
android:paddingLeft="24px"
android:paddingEnd="56px"
android:paddingRight="56px"
android:visibility="gone">
<TextView
android:id="#+id/audio_off_text"
android:layout_width="648px"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginStart="6px"
android:layout_marginLeft="6px"
android:ellipsize="end"
android:gravity="left"
android:singleLine="true"
android:text="PowerOFF"
android:textColor="#color/white"
android:textSize="30px">
</TextView>
</LinearLayout>
</FrameLayout>
</LinearLayout>
</FrameLayout>
</LinearLayout>
</LinearLayout>
I set onclick on FrameLayout and LinearLayout, i wanna show log is status but when i touch it, nothing happen.
And then, i set android:layout_width="1dp", android:layout_height="1dp" of id: status_bar_all_contents, it show log: status, but status_bar_all_contents will gone, so i dont want that.
So how to fix when i touch it and show log status?
Ps: Sorry for my english is not good.
Layouts typically pass-through clicks to their children.
You can try this solution here disabling all children onclicks and enabling the FrameLaoyuts onclicks. But I don't think that will work with the LinearLayout on top of that.
Android frame layout click listener not working
My advice wrap the entire view in a ConstraintLayout, and position 2 basic <View>s
One <View> that is constrained to match the FrameLayout
One <View> that is constrained to match the LinearLayout
These <View>s will act as overlays.
<View
android:id="#+id/status_bar_overlay"
app:layout_constraintEnd_toEndOf="#id/status_bar"
app:layout_constraintStart_toStartOf="#id/status_bar"
app:layout_constraintTop_toTopOf="#id/status_bar"
app:layout_constraintBottom_toBottomOf="#id/status_bar" />
<View
android:id="#+id/status_bar_all_contents_overlay"
app:layout_constraintEnd_toEndOf="#id/status_bar_all_contents"
app:layout_constraintStart_toStartOf="#id/status_bar_all_contents"
app:layout_constraintTop_toTopOf="#id/status_bar_all_contents"
app:layout_constraintBottom_toBottomOf="#id/status_bar_all_contents" />
Set the two View's onClickListener in the Activity and there you go.
Im trying to call a second activity from my Main Activity, using this code
Intent goToOrder = new Intent(ListOfOrdersActivity.this, OrderSummaryActivity.class);
startActivity(goToOrder);
Being my OrderSummaryActivity:
public class OrderSummaryActivity extends ActionBarActivity {
#Override
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
super.onCreate(savedInstanceState, persistentState);
setContentView(R.layout.order_summary);
}
}
But the layout wont show on this activity, just a blank page.
This is the xml of the layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/name"
android:textSize="20sp"
android:textStyle="bold"
android:layout_margin="10dp"
/>
<TextView
android:id="#+id/order_resume_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/quantity"
android:textSize="20sp"
android:textStyle="bold"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/order_resume_quantity"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/whipped_cream"
android:textSize="20sp"
android:textStyle="bold"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/order_resume_whipped_cream"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/chocolate"
android:textSize="20sp"
android:textStyle="bold"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/order_resume_chocolate"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/order_summary_total"
android:textSize="20sp"
android:textStyle="bold"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/order_resume_total"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Any hint?
try overriding
public void onCreate(Bundle savedInstanceState)
instead of
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState)
Try changing your OrderSummaryActivity.class to :
public class OrderSummaryActivity extends ActionBarActivity
{
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.order_summary);
}
}
I just created an Activity to show some product informations and this Activity has a Collapsing Toolbar. I wanted to load an image by Picasso as soon as the Activity opens.
Here is the current code :
public class ProductActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_product);
Product p = (Product) getIntent().getExtras().getSerializable("product");
setSupportActionBar((Toolbar) findViewById(R.id.toolbar));
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setTitle(p.getProductName());
TextView name = (TextView) findViewById(R.id.product_name);
TextView type = (TextView) findViewById(R.id.product_type);
TextView description = (TextView) findViewById(R.id.product_description);
TextView ingredients = (TextView) findViewById(R.id.product_ingredients);
TextView price = (TextView) findViewById(R.id.product_price);
ImageView thumbnail = (ImageView) findViewById(R.id.product_thumbnail);
name.setText(p.getProductName());
type.setText(p.getProductType().getDisplayName());
description.setText(p.getProductDescription());
ingredients.setText("Non disponible");
price.setText(p.getProductPrice().length>1 ? "À partir de "+p.getProductPrice()[0].toString()+"€" : p.getProductPrice()[0].toString()+"€");
Picasso.with(this).load(p.getProductThumbnailURL()).fit().into(thumbnail);
Picasso.with(this).load(p.getProductThumbnailURL()).fit().into((ImageView)findViewById(R.id.test), new Callback() {
#Override
public void onSuccess() {
}
#Override
public void onError() {
Toast.makeText(ProductActivity.this, "Impossible de charger l'image !", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId()==android.R.id.home)finish();
return super.onOptionsItemSelected(item);
}
}
And here is a screen of the Activity (don't take care of the design xD)
ProductActivity
Any idea ? :p
Here is the XML file of the ProductActivity :
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.slama.hotpizza77.ProductActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="250dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<ImageView
android:id="#+id/product_thumbnail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
android:contentDescription="#string/product_thumbnail_string" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
app:layoutManager="LinearLayoutManager"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="0dp">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/product_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="product_name"
style="#style/TextAppearance.AppCompat.Large"
tools:ignore="HardcodedText" />
<TextView
android:id="#+id/product_type"
style="#style/TextAppearance.AppCompat.Medium"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="product_type"
android:textAppearance="#style/TextAppearance.AppCompat.Button"
tools:ignore="HardcodedText" />
<TextView
style="#style/TextAppearance.AppCompat.Body1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Description :"
android:textSize="18sp"
tools:ignore="HardcodedText" />
<TextView
android:id="#+id/product_description"
style="#style/TextAppearance.AppCompat.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="product_description"
android:textSize="16sp"
tools:ignore="HardcodedText" />
<TextView
style="#style/TextAppearance.AppCompat.Body1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:text="Ingrédients :"
android:textSize="18sp"
tools:ignore="HardcodedText" />
<TextView
android:id="#+id/product_ingredients"
style="#style/TextAppearance.AppCompat.Small"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="product_ingredients"
android:textSize="16sp"
tools:ignore="HardcodedText" />
<LinearLayout
android:layout_marginTop="16dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#drawable/ic_product_pork"/>
<TextView
android:layout_marginLeft="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Contient de la viande issue de porc !"
style="#style/TextAppearance.AppCompat.Body2"/>
</LinearLayout>
<LinearLayout
android:layout_marginTop="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#drawable/ic_product_notforkid"/>
<TextView
android:layout_marginLeft="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Ne convient pas aux enfants !"
style="#style/TextAppearance.AppCompat.Body2"/>
</LinearLayout>
<TextView
android:id="#+id/product_price"
android:layout_marginTop="16dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="product_price"
style="#style/Widget.AppCompat.Button.Colored"
tools:ignore="HardcodedText" />
<ImageView
android:id="#+id/test"
android:layout_width="match_parent"
android:layout_height="200dp"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
Instead of wrap_content for your product_thumbnail ImageView height use match_parent or a fixed size.
Hope this helps
I have an application which currently has 2 people ("Mom" and "Dad"). Each person should have their own counter which increments independently.
My XML Code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.jarrall.apps.annoyed.MainActivity">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mom"
android:id="#+id/textViewMom"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:src="#drawable/bs"
android:id="#+id/imageView"
android:layout_below="#+id/textViewMom"
android:layout_centerHorizontal="true" />
<LinearLayout
android:id="#+id/buttons"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#+id/imageView"
android:layout_centerInParent="true">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="decrement"
android:text="-" />
<TextView
android:id="#+id/total_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:textSize="16sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="increment"
android:text="+" />
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dad"
android:id="#+id/textViewDad"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:src="#drawable/bs"
android:id="#+id/imageViewDad"
android:layout_below="#+id/textViewDad"
android:layout_centerHorizontal="true" />
<LinearLayout
android:id="#+id/buttonsDad"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#+id/imageViewDad"
android:layout_centerInParent="true">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="decrement"
android:text="-" />
<TextView
android:id="#+id/total_text_view2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:textSize="16sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:onClick="increment"
android:text="+" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
My Java code:
public class MainActivity extends AppCompatActivity {
int counter = 2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/**
* This method is called when the plus button is clicked.
*/
public void increment(View view) {
counter = counter + 1;
display(counter);
/* displayPrice(counter * 5); */
}
/**
* This method is called when the minus button is clicked.
*/
public void decrement(View view) {
counter = counter - 1;
display(counter);
}
/**
* This method displays the given counter value on the screen.
*/
private void display(int number) {
TextView counterTextView = (TextView) findViewById(R.id.total_text_view);
counterTextView.setText("" + number);
}
}
How would I edit my code such that when a button is pressed for either mom or dad and the display() method is called that it increments/decreases the corresponding textView (Either #+id/total_text_view or #+id/total_text_view2).
Currently both sets of buttons effect only the first textView (#+id/total_text_view) under mom
Make a few functions;
incrementMom(), decrementMom(), incrementDad() and decrementDad()
then just instead of using android:onClick="decrement" use either android:onClick="decrementMom" or android:onClick="decrementDad"
I've had this issue for the past couple days, and I can't seem to figure out what's wrong. I feel like I've written these exact lines of code a million times. I have two EditText components that I'm trying to get the text from when a button is clicked. But for some reason I'm getting a NullPointer exception for both the EditTexts. Calling findViewById() finds the buttons just fine, but doesn't seem to resolve the EditTexts.
When I run the application, the UI appears and I am able to click the "Connect" button. Logcat tells me the NullPointerException is coming from line 46 in "MainActivity.java", which is where the first EditText is. I've run tests and have verified that they are null. I can't seem to figure out why though, any insight on resolving the matter would be greatly appreciated. I'm running Android Studio v1.0.2.
MainActivity.java
public class MainActivity extends Activity{
private TextView _ipLabel;
private EditText _ipInput;
private EditText _portInput;
private Button _hostButton;
private Button _connectButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
_ipLabel = (TextView) findViewById(R.id.ip_label);
_ipInput = (EditText) findViewById(R.id.ip_input);
_portInput = (EditText) findViewById(R.id.port_input);
_hostButton = (Button) findViewById(R.id.hostButton);
_connectButton = (Button) findViewById(R.id.connectButton);
_hostButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("Host Button", "Clicked");
}
});
_connectButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String connectionAddr = _ipInput.getText().toString() + ":";
connectionAddr+= _portInput.getText().toString();
Log.d("Host", connectionAddr);
}
});
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="#+id/ip_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="-.-.-.-"/>
<Button
android:id="#+id/hostButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" Host "/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IP: "/>
<EditText
android:label="#+id/ip_input"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="PORT: "/>
<EditText
android:label="#+id/port_input"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<Button
android:id="#+id/connectButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Connect"/></LinearLayout>
<EditText
android:label="#+id/port_input"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Here it isn't android:label, it should be android:id.
Change this to,
android:id="#+id/port_input"
Also to the other edit text used.
Instead of:
<EditText
android:label="#+id/ip_input" // <-- this should be an id not a label
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
use:
<EditText
android:id="#+id/ip_input"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
try this..
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="#+id/ip_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="-.-.-.-"/>
<Button
android:id="#+id/hostButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" Host "/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IP: "/>
<EditText
android:id="#+id/ip_input"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="PORT: "/>
<EditText
android:id="#+id/port_input"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<Button
android:id="#+id/connectButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Connect"/></LinearLayout>