Android Toast usage Summary

Content

• Environment
• Demonstrate Toast usage

Environment

• Windows 2008 R2 64-bit
• Eclipse ADT V22.6.2, Android 4.4.3
• Samsung SM-G3508

 

Demonstrate Toast usage

A progressive demonstration of how to use Toast.

Figure 1 left: Main Program; middle: click "Default Toast"; Right: click "Custom location Toast"

Figure 2 left: click "Toast with image"; medium: click "Custom Toast"; right: "Toast from other threads"

The main. xml file contains only six buttons. Toast can also use the custom. xml file as an information prompt to download the Demo, Which is omitted here, as shown in Ruian, the core code:

package com.example.toastdemo.activity;

import com.example.toastdemo.R;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity {

    Handler handler = new Handler();

    Toast toast = null;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        findViewById(R.id.btnSimpleToast).setOnClickListener(

                new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

Toast. makeText (getApplicationContext (), "Toast by default ",

                                Toast.LENGTH_SHORT).show();

                    }

                });

        findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(

                new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

                        toast = Toast.makeText(getApplicationContext(),

"Custom location Toast", Toast. LENGTH_LONG );

                        toast.setGravity(Gravity.CENTER, 0, 0);

                        toast.show();

                    }

                });

        findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(

                new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

                        toast = Toast.makeText(getApplicationContext(),

"Toast with image", Toast. LENGTH_LONG );

                        toast.setGravity(Gravity.CENTER, 0, 0);

                        LinearLayout toastView = (LinearLayout) toast.getView();

                        ImageView image1 = new ImageView(

                                getApplicationContext());

                        image1.setImageResource(R.drawable.icon);

                        toastView.addView(image1, 0);

                        toast.show();

                    }

                });

        findViewById(R.id.btnCustomToast).setOnClickListener(

                new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

                        LayoutInflater inflater = getLayoutInflater();

                        View layout = inflater.inflate(R.layout.custom,

                                (ViewGroup) findViewById(R.id.llToast));

                        ImageView image2 = (ImageView) layout

                                .findViewById(R.id.tvImageToast);

                        image2.setImageResource(R.drawable.icon);

                        TextView title = (TextView) layout

                                .findViewById(R.id.tvTitleToast);

                        title.setText("Attention");

                        TextView text = (TextView) layout

                                .findViewById(R.id.tvTextToast);

Text. setText ("Custom Toast ");

                        toast = new Toast(getApplicationContext());

                        toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);

                        toast.setDuration(Toast.LENGTH_LONG);

                        toast.setView(layout);

                        toast.show();

                    }

                });

        findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(

                new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

                        new Thread(new Runnable() {

                            public void run() {

                                showToast();

                            }

                        }).start();

                    }

                });

    }

    public void showToast() {

        handler.post(new Runnable() {

            @Override

            public void run() {

Toast. makeText (getApplicationContext (), "from other threads Toast ",

                        Toast.LENGTH_SHORT).show();

            }

        });

    }

}

Download Demo