In android,i want to get a string from user using EditText and on click of submit button the string need to be show on another page/pane.
here is my fragment.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<EditText android:id="#+id/msg"
android:hint="#string/entertheip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/text"
/>
<Button android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Button1"
/>
<TextView android:id="#+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/thetext"
android:visibility="invisible"
/>
</LinearLayout>
and corresponding java class is this
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
Button bu = (Button)findViewById(R.id.button1);
bu.setOnClickListener(new View.OnClickListener() {
private TextView tv = (TextView)findViewById(R.id.tv);
#Override
public void onClick(View v) {
// to view the ip in another page
try{
EditText et = (EditText)findViewById(R.id.msg);
String t = et.getText().toString();
tv.setText(t);
}catch(NullPointerException e){
e.printStackTrace();
}
}
});
}
}
But i am getting the Edit Text and Button only, the text is not showing in another page. Kindly help in this.
place this inside onClick
tv.setVisibility(View.VISIBLE);
You will have to use an Intent to go to another activity, like
Intent i=new Intent(MainActivity.this, someClass.class);
startActivity(i);
save the string in app preference and use the preference tag in that class and set the string to some textview you want there ...
try below way:-
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
Button bu = (Button)findViewById(R.id.button1);
TextView tv = (TextView)findViewById(R.id.tv);
EditText et = (EditText)findViewById(R.id.msg);
bu.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// to view the ip in another page
try{
String t = et.getText().toString();
tv.setText(t);
}catch(NullPointerException e){
e.printStackTrace();
}
}
});
}
Remove this line from TextView tag of your XML File:-
android:visibility="invisible"
You can navigate between activities using Intent and also pass data with it
Using Intents to Create Flows
Simple way on your case is
On Button click
Intent i = new Intent(MainActivity.this, ActivityTwo.class);
i.putExtra("username", "foobar");
startActivity(i); // brings up the second activity
On Another Activity
// ActivityTwo.java (subactivity) can access any extras passed in
protected void onCreate(Bundle savedInstanceState) {
String username = getIntent().getStringExtra("username");
}
You have not added onClick to button: Fix that.
<Button android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Button1"
android:onClick="onBtnClick"
/>
And you need not override onClick if you are not implementing onClickListener in activity.
public void onBtnClick(View v) {
// to view the ip in another page
try{
EditText et = (EditText)findViewById(R.id.msg);
String t = et.getText().toString();
tv.setText(t);
tv.setVisibility(View.VISIBLE); //as you have kept visibility invisible in xml
}catch(NullPointerException e){
e.printStackTrace();
}
}
Hope it helps.
Related
I want to know how to link a button to edittext so that anytime a certain id is put on the edittext and a button is press, it send you to another page and give detail information about that I'd. I am a beginner so help me pls.
In the XML file, you need to have EditText and Button like the following,
<EditText
android:id="#+id/txt"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="#+id/btn"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Submit" />
And your code should be like this.
public void onCreate(Bundle savedInstanceState) {
// Initialize edittext and button
EditText txt = (EditText) findViewById(R.id.txt);
Button btn = (Button) findViewById(R.id.btn);
// Set listener to the button
btn.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
String text = txt.getText().toString();
yourFunction(text);
}
});
}
private void yourFunction(String text) {
// Your search code goes here
}
I have a public String stringPass in SecondActivity.java that I want to pass to MainActivity.java so that when I click a button, the string from the SecondActivity.java updates a TextView tv that is declared in MainActivity.java.
The bug I'm getting is that when I press the button, the string in the SecondActivity.java is not shown.
Instead, It goes from "Hello World!" to no text displayed.
FYI, i'm going to add strings to MainActivity.java from multiple activities, so I want it this particular way for my organization.
Thanks!
SecondActivity.java
public class SecondActivity extends AppCompatActivity{
public String stringPass;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
stringPass = "this is from SecondActivity";
}
}
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView tv = findViewById(R.id.tv);
Button btn = findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
tv.setText(new SecondActivity().stringPass);
}
});
}
}
activity_main.xml
<Button
android:id="#+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
Is there much content in the second activity? Is it an actual activity with much going on? If not replace it with a dialog box, when the ok button is clicked it can update the text box.
I have a problem with creating 2 activities for 1 button. I created a button and I managed to connect that button with one activity but I dont know how to add another activity to the same button.. What am I trying to do is that when we press on that button it will start playing animation (I managed to do that) but I also want it to send SMS to a specific number. I have code for that, but I dont know how to include / connect everything together.
Code from a button:
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent" />
Code from a imageview (animation):
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_gravity="center"
android:scaleType="centerInside"
android:src="#drawable/keers" />
Code from main activity, for animation:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.imageView);
button = (Button) findViewById(R.id.button);
running = false;
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if(!running){
((AnimationDrawable) imageView.getDrawable()).start();
running = true;}
}
}
);
}
}
Now what I want to add for the same button is this :
public void sendText(View paramView)
{
Toast.makeText(this, "SENT",Toast.LENGTH_SHORT).show();
SmsManager.getDefault().sendTextMessage("+3564245237",null,"1", null, null);
I'm not that experienced in programming, so it might be pretty easy for you guys.
Both actions seen to be fired by the same Button, so you may add both to the onClickListener
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if(!running){
((AnimationDrawable) imageView.getDrawable()).start();
running = true;}
Toast.makeText(view.getContext(), "SENT",Toast.LENGTH_SHORT).show(); //Or YourActivity.this
SmsManager.getDefault().sendTextMessage("+3564245237",null,"1", null, null);
}
}
everyone. I am new in android. I am creating two activities in android ,1st activity has two image view and one button . and 2nd activity has one button. when I go to second activity and then from second activity agian . one image view of 1st activity should visibility gone. how can i do this.
here is my code
Activitymain.xml
<ImageView
android:id="#+id/1stimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/2ndimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="go to second activity" />
mainactivity.java
ImageView imageView1, imageView2;
Button btn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView1 = (ImageView) findViewById(R.id.1stimage);
imageView2 = (ImageView) findViewById(R.id.2ndimage);
btn = (Button) findViewById(R.id.btn1);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent Firstintent= new Intent(MainActivity.this,SecondActivity.class);
startActivity(Firstintent);
}
});
}
secondactivity.xml
<Button
android:id="#+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="go to 1st activity" />
secondactivity.java
Button btn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
btn = (Button) findViewById(R.id.btn2);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent SecondIntent = new Intent(SecondActivity.this,
MainActivity.class);
SecondActivity.this.startActivity(SecondIntent);
SecondActivity.this.finishActivity();
}
});
}
please help me
Activitymain.xml
<ImageView
android:id="#+id/1stimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="#+id/2ndimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="go to second activity" />
mainactivity.java
ImageView imageView1, imageView2;
Button btn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView1 = (ImageView) findViewById(R.id.1stimage);
imageView2 = (ImageView) findViewById(R.id.2ndimage);
btn = (Button) findViewById(R.id.btn1);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent Firstintent= new Intent(MainActivity.this,SecondActivity.class);
startActivity(Firstintent);
}
});
Bundle extras = getIntent().getExtras();
if(extras != null){
if(extras.getBoolean("isResult", false)){
imageView1.setVisability(View.GONE);
}
}
}
secondactivity.xml
<Button
android:id="#+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="go to 1st activity" />
secondactivity.java
Button btn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
btn = (Button) findViewById(R.id.btn2);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent SecondIntent = new Intent(SecondActivity.this,
MainActivity.class);
SecondIntent.putExtra("isResult", true);
SecondActivity.this.startActivity(SecondIntent);
SecondActivity.this.finishActivity();
}
});
}
Use putextra(tag, some variable to use in mainActivity) and Bundle extras = getIntent().getExtras(); extras.get[type of variable](tag) to pass a variable (probably a boolean) to tell the onCreate() to show or not show the pic.
EDIT:
Here is one way to implement it: in the first activity:
1) Check if there are extras (A.K.A. if second activity was loaded/ there is a true)
2) If (yes) { if (first pic is loaded) { remove first pic } else if (first pick is not but second is loaded) { remove second pic } ... for all the pictures you want to do this to.
Remember you only need to pass true/false from the second activity (and then handle it in the first/one being modified)
I have a simple xml with a question and two buttons. When one of buttons is pushed i will compare if the id of the pushed button is equal to "Blanco" or "Negro".
The XML code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/pregunta" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Blanco"
android:onClick="respuesta"/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Negro"
android:onClick="respuesta"/>
</LinearLayout>
</LinearLayout>
This is de java code:
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void respuesta(){
//The doubt.
//Here the if/else to compare ID with the button text
}
}
Don't do it like that. Create an onClickListener for each Button, so you know exactly which one is being pressed. For example:
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button)findViewById(R.id.button1);
Button button2 = (Button)findViewById(R.id.button2);
button1.setOnClickListener(new View.OnClickListener{
public void onClick(View v) {
// call code here, knowing that button1 was pressed
}
});
button2.setOnClickListener(new View.OnClickListener{
public void onClick(View v) {
// call code here, knowing that button2 was pressed
}
});
}
}
implement onClickListener into your Activity.
public class MainActivity extends ActionBarActivity implements OnClickListener
Declare the Button variables inside your class
Button btblanco, btnegro;
Implement the clickListener event on onCreate
btblanco = (Button) findViewById(R.id.button1);
btnegro = (Button) findViewById(R.id.button2);
btblanco.setOnClickListener(this);
btnegro.setOnClickListener(this);
And put this inside onClickListener method.
#Override
public void onClick(View v) {
switch(v.getId())
{
case R.id.button1:
Toast.makeText(getApplicationContext(), "Blanco", Toast.LENGTH_SHORT).show();
break;
case R.id.button2:
Toast.makeText(getApplicationContext(), "Negro", Toast.LENGTH_SHORT).show();
break;
}}
if you are interested in just knowing which button was clicked, then add a onclicklistener to the button objects. Google for it a bit and the samples you find will show you how to use a switch case structure to d actions based on which button was clicked.