toast鐨勭敤娉昦ndroid，android toast

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1、toast是Android系统中一种消息框类型

2、Android中的Toast是一种简易的消息提示框。

3、当视图显示给用户，在应用程序中显示为浮动。和Dialog不一样的是，它永远不会获得焦点，无法被点击。用户将可能是在中间键入别的东西。Toast类的思想就是尽可能不引人注意，同时还向用户显示信息，希望他们看到。而且Toast显示的时间有限，Toast会根据用户设置的显示时间后自动消失。

Toast用于向用户显示一些帮助/提示。下面我做了5中效果，来说明Toast的强大，定义一个属于你自己的Toast。

Toast.makeText(getApplicationContext(),"默认Toast样式",

toast= Toast.makeText(getApplicationContext(),

"自定义位置Toast", Toast.LENGTH_LONG);

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

toast= Toast.makeText(getApplicationContext(),

"带图片的Toast", Toast.LENGTH_LONG);

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

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

ImageView imageCodeProject= new ImageView(getApplicationContext());

imageCodeProject.setImageResource(R.drawable.icon);

toastView.addView(imageCodeProject, 0);

LayoutInflater inflater= getLayoutInflater();

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

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

ImageView image=(ImageView) layout

.findViewById(R.id.tvImageToast);

image.setImageResource(R.drawable.icon);

TextView title=(TextView) layout.findViewById(R.id.tvTitleToast);

TextView text=(TextView) layout.findViewById(R.id.tvTextToast);

text.setText("完全自定义Toast");

toast= new Toast(getApplicationContext());

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

toast.setDuration(Toast.LENGTH_LONG);

import android.view.LayoutInflater;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

public class Main extends Activity implements OnClickListener{

Handler handler= new Handler();

public void onCreate(Bundle savedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

findViewById(R.id.btnSimpleToast).setOnClickListener(this);

findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(

findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(this);

findViewById(R.id.btnCustomToast).setOnClickListener(this);

findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(this);

Toast.makeText(getApplicationContext(),"我来自其他线程！",

Toast.makeText(getApplicationContext(),"默认Toast样式",

case R.id.btnSimpleToastWithCustomPosition:

toast= Toast.makeText(getApplicationContext(),

"自定义位置Toast", Toast.LENGTH_LONG);

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

case R.id.btnSimpleToastWithImage:

toast= Toast.makeText(getApplicationContext(),

"带图片的Toast", Toast.LENGTH_LONG);

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

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

ImageView imageCodeProject= new ImageView(getApplicationContext());

imageCodeProject.setImageResource(R.drawable.icon);

toastView.addView(imageCodeProject, 0);

LayoutInflater inflater= getLayoutInflater();

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

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

ImageView image=(ImageView) layout

.findViewById(R.id.tvImageToast);

image.setImageResource(R.drawable.icon);

TextView title=(TextView) layout.findViewById(R.id.tvTitleToast);

TextView text=(TextView) layout.findViewById(R.id.tvTextToast);

text.setText("完全自定义Toast");

toast= new Toast(getApplicationContext());

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

toast.setDuration(Toast.LENGTH_LONG);

case R.id.btnRunToastFromOtherThread:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="schemas.android.com/apk/res/android"

android:orientation="vertical" android:layout_width="fill_parent"

android:layout_height="fill_parent" android:padding="5dip" android:gravity="center">

<Button android:layout_height="wrap_content"

android:layout_width="fill_parent" android:id="@+id/btnSimpleToast"

android:text="默认"></Button>

<Button android:layout_height="wrap_content"

android:layout_width="fill_parent" android:text="自定义显示位置"

android:id="@+id/btnSimpleToastWithCustomPosition"></Button>

<Button android:layout_height="wrap_content"

android:layout_width="fill_parent" android:id="@+id/btnSimpleToastWithImage"

android:text="带图片"></Button>

<Button android:layout_height="wrap_content"

android:layout_width="fill_parent" android:text="完全自定义"

android:id="@+id/btnCustomToast"></Button>

<Button android:layout_height="wrap_content"

android:layout_width="fill_parent" android:text="其他线程"

android:id="@+id/btnRunToastFromOtherThread"></Button>

<?xml version="1.0" encoding="utf-8"?>

xmlns:android="schemas.android.com/apk/res/android"

android:layout_height="wrap_content" android:layout_width="wrap_content"

android:background="#ffffffff" android:orientation="vertical"

android:layout_height="wrap_content"

android:layout_width="fill_parent"

android:background="#bb000000"

android:id="@+id/tvTitleToast"/>

android:layout_height="wrap_content"

android:orientation="vertical"

android:id="@+id/llToastContent"

android:layout_marginLeft="1dip"

android:layout_marginRight="1dip"

android:layout_marginBottom="1dip"

android:layout_width="wrap_content"

android:background="#44000000">

android:layout_height="wrap_content"

android:layout_gravity="center"

android:layout_width="wrap_content"

android:id="@+id/tvImageToast"/>

android:layout_height="wrap_content"

android:layout_width="wrap_content"

android:id="@+id/tvTextToast"/>

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