How to display Toast in Android?

user_401025 0
Viewed 1180319

I have a slider that can be pulled up and then it shows a map. I can move the slider up and down to hide or show the map. When the map is on front, I can handle touch events on that map. Everytime I touch, a AsyncTask is fired up, it downloads some data and makes a Toast that displays the data. Although I start the task on touch event no toast is displayed, not till I close the slider. When the slider is closed and the map is not displayed anymore the Toast appears.

Any ideas?

Well start the task

EDIT:

public boolean onTouchEvent(MotionEvent event, MapView mapView){ 
    if (event.getAction() == 1) {
        new TestTask(this).execute();
        return true;            
    }else{
        return false;
    }
 }

and in onPostExecute make a toast

Toast.makeText(app.getBaseContext(),(String)data.result, 
                Toast.LENGTH_SHORT).show();

In new TestTask(this), this is a reference to MapOverlay and not to MapActivity, so this was the problem.

toast android-asynctask android-mapview android
22 Answers

Simple Way

toast("Your Message")

OR

toast(R.string.some_message)

Just add two methods in your BaseActivity. Or create new BaseActivity if you are not already using.

public class BaseActivity extends AppCompatActivity {
    public void toast(String msg) {
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    }

    public void toast(@StringRes int msg) {
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    }
}

and extend all your activities by BaseActivity.

public class MainActivity extends BaseActivity
user_68915630

enter image description here

Must read: Android Toast Example

Syntax

Toast.makeText(context, text, duration);

You can use getApplicationContext() or getActivity() or MainActivity.this(if Activity Name is MainActivity)

Toast.makeText(getApplicationContext(),"Hi I am toast",Toast.LENGTH_LONG).show();

or 

Toast.makeText(MainActivity.this,"Hi I am Toast", Toast.LENGTH_LONG).show();
user_111205160

Inside Fragments (onCreateView)

Toast.makeText(getActivity(), "your message" , Toast.LENGTH_LONG).show();

Inside Classes (onCreate)

Toast.makeText(myClassName.this, "your message" , Toast.LENGTH_LONG).show();

user_95156670

The Getting Started Way

Toast.makeText(this, "Hello World", Toast.LENGTH_SHORT).show();
user_58348220

This worked for me:

Toast.makeText(getBaseContext(), "your text here" , Toast.LENGTH_SHORT ).show();
Admin1

Here's another one:

refreshBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(getBaseContext(),getText(R.string.refresh_btn_pushed),Toast.LENGTH_LONG).show();
            }
        });

Where Toast is:

Toast.makeText(getBaseContext(),getText(R.string.refresh_btn_pushed),Toast.LENGTH_LONG).show();

& strings.xml:

<string name="refresh_btn_pushed">"Refresh was Clicked..."</string>

user_8486770

Show Toast from Service

public class ServiceA extends Service {
    //....
    public void showToast(final String message) {
        Handler handler = new Handler(Looper.getMainLooper());
        handler.post(new Runnable() {

            @Override
            public void run() {
                Toast.makeText(getContext(), message, Toast.LENGTH_LONG).show();
            }
        });
    }
    //....
}

You can also put showToast method in your Application class, and show toast from anywhere.

user_68915630

If you want to write a simple toast in your activity: Toast.makeText(getApplicationContext(),"Hello",Toast.LENGTH_SHORT).show();

1.Showing TextView in Toast:---

TextView tv = new TextView(this); tv.setText("Hello!"); tv.setTextSize(30); tv.setTextColor(Color.RED); tv.setBackgroundColor(Color.YELLOW);

2.Showing Image as Toast:--

ImageView iv = new ImageView(this); iv.setImageResource(R.drawable.blonde); Toast t = new Toast(this); t.setView(iv); t.setDuration(Toast.LENGTH_LONG); t.show();

3.showing Layout as Toast:--

LayoutInflater li = getLayoutInflater(); View view = li.inflate(R.layout.my_toast_layout,null,false); Toast t = new Toast(this); t.setView(view); t.setDuration(Toast.LENGTH_LONG); t.show();

** If you want to write the toast in your Async then: private Activity activity; private android.content.Context context; this.activity = activity; this.context = context; Toast.makeText(context, "Hello", Toast.LENGTH_SHORT).show();

user_93317290

Extension function with some kotlin sugar

fun Context.showToast(string: String){
    Toast.makeText(
        this, string,
        Toast.LENGTH_SHORT
    ).show()
}

Usage:

From Activity: showToast("toast)

From Fragment: requiredContext().showToast("toast)

user_66884930
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