Android Toast通知用法实例详解

2024-03-15 16:27:04 145

本文实例讲述了AndroidToast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);
LinearLayouttoastView=(LinearLayout)toast.getView();
ImageViewimageCodeProject=newImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.icon);
toastView.addView(imageCodeProject,0);
toast.show();

5.完全自定义效果

LayoutInflaterinflater=getLayoutInflater();
Viewlayout=inflater.inflate(R.layout.custom,(ViewGroup)findViewById(R.id.llToast));
ImageViewimage=(ImageView)layout.findViewById(R.id.tvImageToast);
image.setImageResource(R.drawable.icon);
TextViewtitle=(TextView)layout.findViewById(R.id.tvTitleToast);
title.setText("Attention");
TextViewtext=(TextView)layout.findViewById(R.id.tvTextToast);
text.setText("完全自定义Toast");
toast=newToast(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：

packagecom.wjq.toast;
importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.os.Handler;
importandroid.view.Gravity;
importandroid.view.LayoutInflater;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.view.View.OnClickListener;
importandroid.widget.ImageView;
importandroid.widget.LinearLayout;
importandroid.widget.TextView;
importandroid.widget.Toast;
publicclassMainextendsActivityimplementsOnClickListener{
Handlerhandler=newHandler();
@Override
publicvoidonCreate(BundlesavedInstanceState){
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);
}
publicvoidshowToast(){
handler.post(newRunnable(){
@Override
publicvoidrun(){
Toast.makeText(getApplicationContext(),"我来自其他线程！",Toast.LENGTH_SHORT).show();
}
});
}
@Override
publicvoidonClick(Viewv){
Toasttoast=null;
switch(v.getId()){
caseR.id.btnSimpleToast:
Toast.makeText(getApplicationContext(),"默认Toast样式",Toast.LENGTH_SHORT).show();
break;
caseR.id.btnSimpleToastWithCustomPosition:
toast=Toast.makeText(getApplicationContext(),"自定义位置Toast",Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER,0,0);
toast.show();
break;
caseR.id.btnSimpleToastWithImage:
toast=Toast.makeText(getApplicationContext(),"带图片的Toast",Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER,0,0);
LinearLayouttoastView=(LinearLayout)toast.getView();
ImageViewimageCodeProject=newImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.icon);
toastView.addView(imageCodeProject,0);
toast.show();
break;
caseR.id.btnCustomToast:
LayoutInflaterinflater=getLayoutInflater();
Viewlayout=inflater.inflate(R.layout.custom,(ViewGroup)findViewById(R.id.llToast));
ImageViewimage=(ImageView)layout.findViewById(R.id.tvImageToast);
image.setImageResource(R.drawable.icon);
TextViewtitle=(TextView)layout.findViewById(R.id.tvTitleToast);
title.setText("Attention");
TextViewtext=(TextView)layout.findViewById(R.id.tvTextToast);
text.setText("完全自定义Toast");
toast=newToast(getApplicationContext());
toast.setGravity(Gravity.RIGHT|Gravity.TOP,12,40);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
break;
caseR.id.btnRunToastFromOtherThread:
newThread(newRunnable(){
publicvoidrun(){
showToast();
}
}).start();
break;
}
}
}

main.xml代码：

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns: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：

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns: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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希望本文所述对大家Android程序设计有所帮助。

Android Toast通知用法实例详解

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