Android入门--Toast五种情形_adb toast-优快云博客

本文链接：https://blog.youkuaiyun.com/alfany/article/details/51659426

本文介绍了Android入门中的Toast使用，通过五个不同示例展示了如何展示默认效果、自定义显示位置、添加图标、自定义布局以及在其他线程中使用Toast，帮助开发者更好地利用Toast进行应用提示。

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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.默认效果代码：

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

2.自定义显示位置效果代码：

Toast toast = Toast.makeText(getApplicationContext(),
			     "自定义位置Toast", Toast.LENGTH_LONG);
			   toast.setGravity(Gravity.CENTER, 0, 0);
			   toast.show();
		}

3.带图片效果代码：

Toast 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.ic_launcher);
		   toastView.addView(imageCodeProject, 0);
		   toast.show();

4.完全自定义效果

Forward代码：

package com.hanji.forward;

import android.support.v7.app.ActionBarActivity;
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.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class Forward extends ActionBarActivity {

	Handler handler = new Handler();

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		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.ic_launcher);
		   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 toast = new Toast(getApplicationContext());
		   toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
		   toast.setDuration(Toast.LENGTH_LONG);
		   toast.setView(layout);
		   toast.show();
		}
		
}

layout中custom.xml代码如下：

<?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>

5.其他线程代码：

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