本文实例讲述了Android Toast通知用法。分享给大家供大家参考，具体如下：
Toast在手机屏幕上向用户显示一条信息，一段时间后信息会自动消失。
1.默认用法
复制代码 代码如下:
Toast.makeText(getApplicationContext(), "默认Toast样式",Toast.LENGTH_SHORT).show();
2.Fragment中的用法
复制代码 代码如下:
Toast.makeText(getActivity(),"网络连接错误，请检察网络设置", Toast.LENGTH_LONG).show();
3.自定义显示位置效果
toast = Toast.makeText(getApplicationContext(), "自定义位置Toast", Toast.LENGTH_LONG); toast.setGravity(Gravity.CENTER, 0, 0); toast.show();
4.带图片效果
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); toast.show();
5.完全自定义效果
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);
title.setText("Attention");
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);
toast.setView(layout);
toast.show();
6.其他线程
Main.java代码：
package com.wjq.toast;
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.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class Main extends Activity implements OnClickListener {
Handler handler = new Handler();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.btnSimpleToast).setOnClickListener(this);
findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(this);
findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(this);
findViewById(R.id.btnCustomToast).setOnClickListener(this);
findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(this);
}
public void showToast() {
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "我来自其他线程！",Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onClick(View v) {
Toast toast = null;
switch (v.getId()) {
case R.id.btnSimpleToast:
Toast.makeText(getApplicationContext(), "默认Toast样式",Toast.LENGTH_SHORT).show();
break;
case R.id.btnSimpleToastWithCustomPosition:
toast = Toast.makeText(getApplicationContext(), "自定义位置Toast",Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
break;
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);
toast.show();
break;
case R.id.btnCustomToast:
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);
title.setText("Attention");
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);
toast.setView(layout);
toast.show();
break;
case R.id.btnRunToastFromOtherThread:
new Thread(new Runnable() {
public void run() {
showToast();
}
}).start();
break;
}
}
}
main.xml代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical"
android:padding="5dip" >
<Button
android:id="@+id/btnSimpleToast"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="默认" >
</Button>
<Button
android:id="@+id/btnSimpleToastWithCustomPosition"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="自定义显示位置" >
</Button>
<Button
android:id="@+id/btnSimpleToastWithImage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="带图片" >
</Button>
<Button
android:id="@+id/btnCustomToast"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="完全自定义" >
</Button>
<Button
android:id="@+id/btnRunToastFromOtherThread"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="其他线程" >
</Button>
</LinearLayout>
custom.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/llToast"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#ffffffff"
android:orientation="vertical" >
<TextView
android:id="@+id/tvTitleToast"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="1dip"
android:background="#bb000000"
android:gravity="center"
android:textColor="#ffffffff" />
<LinearLayout
android:id="@+id/llToastContent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="1dip"
android:layout_marginLeft="1dip"
android:layout_marginRight="1dip"
android:background="#44000000"
android:orientation="vertical"
android:padding="15dip" >
<ImageView
android:id="@+id/tvImageToast"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
<TextView
android:id="@+id/tvTextToast"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:textColor="#ff000000" />
</LinearLayout>
</LinearLayout>
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