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
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- Toast.makeText(getApplicationContext(), "默认Toast样式",Toast.LENGTH_SHORT).show();
2.Fragment中的用法
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- 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
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- 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
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- 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
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- 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打码
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- 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
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- <?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
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- <?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> 1 /**
2 *另一种封装方式
3 *
4 */
5 import android.content.Context;
6 import android.view.Gravity;
7 import android.view.LayoutInflater;
8 import android.view.View;
9 import android.view.ViewGroup;
10 import android.widget.ImageView;
11 import android.widget.LinearLayout;
12 import android.widget.TextView;
13 import android.widget.Toast;
14
15 import com.letv.recorder.R;
16
17 /**
18 * Created by juyanming on 16/7/4.
19 */
20 public class ToastUtils {
21
22 /**
23 * 描述:系统Toast
24 * @param context 应用上下文
25 * @param str 消息框提示的文本内容
26 */
27 public void t_default(Context context,String str){
28 Toast.makeText(context, str,
29 Toast.LENGTH_SHORT).show();
30 }
31
32 /**
33 * 描述:自定义图片Toast
34 * @param context 应用上下文
35 * @param str 消息框提示的文本内容
36 * @param imgId 图片id
37 */
38 public void t_img(Context context,String str,int imgId){
39 Toast toast = Toast.makeText(context,
40 "带图片的Toast", Toast.LENGTH_LONG);
41 toast.setGravity(Gravity.CENTER, 0, 0);
42 LinearLayout toastView = (LinearLayout) toast.getView();
43 ImageView imageCodeProject = new ImageView(context);
44 imageCodeProject.setImageResource(imgId);
45 toastView.addView(imageCodeProject, 0);
46 toast.show();
47 }
48
49 /**
50 *
51 * @param context 应用上下文
52 * @param str 消息框提示的文本内容
53 * @param custom 布局
54 * @param llToast viewId
55 * @param icon 图片id
56 * @param tvImageToast 视图id
57 * @param tvTitleToast
58 * @param tvTextToast
59 */
60 public void t_complete(Context context,String str,int custom,int llToast,int icon,int tvImageToast,int tvTitleToast,int tvTextToast){
61 LayoutInflater inflater = LayoutInflater.from(context);
62 View layout = inflater.inflate(custom,
63 (ViewGroup) findViewById(R.id.llToast));
64 ImageView image = (ImageView) layout
65 .findViewById(tvImageToast);
66 image.setImageResource(icon);
67 TextView title = (TextView) layout.findViewById(tvTitleToast);
68 title.setText("Attention");
69 TextView text = (TextView) layout.findViewById(tvTextToast);
70 text.setText("完全自定义Toast");
71 Toast toast = new Toast(context);
72 toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
73 toast.setDuration(Toast.LENGTH_LONG);
74 toast.setView(layout);
75 toast.show();
76 }
77 }