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。1.默认效果

Toast.makeText(getApplicationContext(), "默认Toast样式",     Toast.LENGTH_SHORT).show(); 

2.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(); 

3.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(); 

4.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(); 

5.其他线程

new Thread(new Runnable() {    public void run() {     showToast();     }    }).start(); 

完整代码

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;   }   }   } 

2.main,xml

  <?xml version="1。0" encoding="utf-8"?>   <LinearLayout xmlns:android="http://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>   </LinearLayout> 

3.custom.xml

  <?xml version="1。0" encoding="utf-8"?>   <LinearLayout   xmlns:android="http://schemas。android。com/apk/res/android"   android:layout_height="wrap_content" android:layout_width="wrap_content"   android:background="#ffffffff" android:orientation="vertical"   android:id="@+id/llToast" >   <TextView   android:layout_height="wrap_content"   android:layout_margin="1dip"   android:textColor="#ffffffff"   android:layout_width="fill_parent"   android:gravity="center"   android:background="#bb000000"   android:id="@+id/tvTitleToast" />   <LinearLayout   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:padding="15dip"   android:background="#44000000" >   <ImageView   android:layout_height="wrap_content"   android:layout_gravity="center"   android:layout_width="wrap_content"   android:id="@+id/tvImageToast" />   <TextView   android:layout_height="wrap_content"   android:paddingRight="10dip"   android:paddingLeft="10dip"   android:layout_width="wrap_content"   android:gravity="center"   android:textColor="#ff000000"   android:id="@+id/tvTextToast" />   </LinearLayout>   </LinearLayout> 

原文链接:http://www.eoeandroid.com/thread-187288-1-1.html

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