I would like to create a string whose components are appended once an ImageView is pressed.
I have an ImageView called imageView and named ImageView on clicking which I am appending a value to a string.
Finally when clicking on one button, I would like the string to show up with a Toast called out in the last Override.
I have, therefore, defined the string (named result), the button and the image, but I still get many errors, most notably I can't recall the "value1" when appending the String.
Any ideas?
Button button;
Button Click = (Button) findViewById(R.id.button);
String result;
ImageView Imageview = (ImageView) findViewById(R.id.imageView);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
(...)
public class Program {
public void main(String[] args) {
final int value1 = 300;
double value2 = 3.14;
short value3 = 5;
char value4 = 'A';
// Create StringBuilder and add four values to it.
final StringBuilder builder = new StringBuilder();
builder.append(value2).append("\n");
builder.append(value3).append("\n");
builder.append(value4);
// Display results.
String result = builder.toString();
System.out.println(result);
public void onClick(View v) {
Imageview.setOnClickListener(new View.OnClickListener() {
builder.append(value1).append("\n");
}
}
}
@Override
public void onClick(View V){
Toast.makeText(getApplicationContext(),getApplicationContext().getResources().getString(Integer.parseInt(result)), Toast.LENGTH_LONG).show();
}
Your Main Activity Java class have somthing like this
public class MainActivity extends AppCompatActivity {
Button button;
Button click;
String result ="";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
click = (Button) findViewById(R.id.button);
final int value1 = 300;
final double value2 = 3.14;
final short value3 = 5;
final char value4 = 'A';
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//create the send intent
Intent shareIntent =
new Intent(android.content.Intent.ACTION_SEND);
//set the type
shareIntent.setType("text/plain");
//add a subject
shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"Insert Subject Here");
//build the body of the message to be shared
String shareMessage = "Insert message body here.";
//add the message
shareIntent.putExtra(android.content.Intent.EXTRA_TEXT,
shareMessage);
//start the chooser for sharing
startActivity(Intent.createChooser(shareIntent, getResources().getString(R.string.FinalString)));
}
});
// Create StringBuilder and add four values to it.
final StringBuilder builder = new StringBuilder();
builder.append(value2).append("\n");
builder.append(value3).append("\n");
builder.append(value4);
ImageView imageview = (ImageView) findViewById(R.id.imageView);
imageview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
builder.append(value1).append("\n");
}
});
click.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this,builder.toString(),Toast.LENGTH_LONG).show();
}
});
}
}
i change Your XMl File To This iths better
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
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=".MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="88dp"
android:clickable="true"
android:src="@android:drawable/ic_input_add" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
I Test It every things Fine
And Show comment on Your Error there
the frirst error for this line
ImageView Imageview = (ImageView) findViewById(R.id.imageView);
you can't use findById in your class block you have to use it in a function like onCreate so change your code .... your code have to
something like this
ImageView imageView;
TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
imageView= (ImageView) findViewById(R.id.imageView);
textView=(TextView) findViewById(R.id.tv_show);
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String test=textView.getText().toString();
textView.setText(test);
}
});
}
just remember you have to add a textView to your xml file and set this id to tv_show;
Make TextView then append(); :
in XML:
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
android:text="" />
in Java:
public void onClick(View v) {
Imageview.setOnClickListener(new View.OnClickListener() {
TextView tv = (TextView) findViewById(R.id.textView);
tv.setMovementMethod(new ScrollingMovementMethod());
tv.append(value1 + "\n");
}
}
You can append the string like this on button click
String stringName = "";
Imageview.setOnClickListener(new View.OnClickListener() {
strigName = stringName + "New appended data";
}
button.setOnClickListener(new View.OnClickListener() {
Toast.makeText(MainActivity.this, stringName, Toast.LENGTH_SHORT).show();
}
