android取消toast_android重写toast

2022-09-30 11:45:08 浏览数 (1)

大家好，又见面了，我是你们的朋友全栈君。

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

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

2.Fragment中的用法

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：

android:layout_width=”fill_parent”

android:layout_height=”fill_parent”

android:gravity=”center”

android:orientation=”vertical”

android:padding=”5dip” >

android:id=”@ id/btnSimpleToast”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”默认” >

android:id=”@ id/btnSimpleToastWithCustomPosition”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”自定义显示位置” >

android:id=”@ id/btnSimpleToastWithImage”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”带图片” >

android:id=”@ id/btnCustomToast”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”完全自定义” >

android:id=”@ id/btnRunToastFromOtherThread”

android:layout_width=”fill_parent”

android:layout_height=”wrap_content”

android:text=”其他线程” >

custom.xml：

android:id=”@ id/llToast”

android:layout_width=”wrap_content”

android:layout_height=”wrap_content”

android:background=”#ffffffff”

android:orientation=”vertical” >

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” />

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” >

android:id=”@ id/tvImageToast”

android:layout_width=”wrap_content”

android:layout_height=”wrap_content”

android:layout_gravity=”center” />

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″ />

希望本文所述对大家Android程序设计有所帮助。

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