Android中的Toast的基准格式和自定义格式_Android

Android中的Toast的标准格式和自定义格式

?Android 中的Toast是一个弹出的提示消息框，以友好的方式提示用户，例如保存数据成功等。

下面以一个例子来说明Toast的使用以及标准的Toast显示方式和自定义的Toast显示方式来提示友好的信息。以下是该Demo的程序结构图：

[1] res/layout目录下的 main.xml源码：

[html]?view plaincopy
<?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"??
????>??
????<TextView????
???????android:layout_width="fill_parent"???
???????android:layout_height="wrap_content"???
???????android:text="@string/hello"??
????/>??
????<Button??
???????android:id="@+id/show"??
???????android:layout_width="fill_parent"??
???????android:layout_height="wrap_content"??
???????android:text="Show?Toast"/>??
</LinearLayout>??

[2] res/layout目录下的 customtoast.xml源码：

[html]?view plaincopy
<?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>??

[3] src目录下的 MainActivity.java源码：

[html]?view plaincopy
package?com.andyidea.demo;??
??
import?android.app.Activity;??
import?android.os.Bundle;??
import?android.view.Gravity;??
import?android.view.LayoutInflater;??
import?android.view.View;??
import?android.view.ViewGroup;??
import?android.widget.Button;??
import?android.widget.ImageView;??
import?android.widget.LinearLayout;??
import?android.widget.TextView;??
import?android.widget.Toast;??
??
public?class?MainActivity?extends?Activity?{??
??????
????Button?btn;??
??????
????/**?Called?when?the?activity?is?first?created.?*/??
[email protected]
????public?void?onCreate(Bundle?savedInstanceState)?{??
????????super.onCreate(savedInstanceState);??
????????setContentView(R.layout.main);??
??????????
????????btn?=?(Button)findViewById(R.id.show);??
????????btn.setOnClickListener(new?View.OnClickListener()?{??
??????????????
[email protected]
????????????public?void?onClick(View?v)?{??
????????????????//标准方式??
????????????????showToast1();??
????????????????//标准方式上添加图片??
????????????????showToast2();??
????????????????//自定义显示方式??
????????????????showToast3();??
????????????}??
????????});??
????}??
??????
????/**??
?????*?Basic?Standard?Toast??
?????*?标准提示信息方式??
?????*/??
????private?void?showToast1(){??
???????Toast?toast?=?Toast.makeText(getApplicationContext(),"Hello,?This?is?Andy!",?Toast.LENGTH_LONG);??
???????toast.show();??
????}??
??????
????/**??
?????*?Adding?an?Image?to?the?Standard?Toast??
?????*?在标准显示方式基础上添加图片??
?????*/??
????private?void?showToast2(){??
???????Toast?toast?=?Toast.makeText(getApplicationContext(),"Hello,?This?is?Andy!",?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();??
????}??
??????
????/**??
?????*?Creating?a?Toast?with?Custom?Layout??
?????*?创建自定义的提示信息方式??
?????*/??
????private?void?showToast3(){??
????????LayoutInflater?inflater?=?getLayoutInflater();??
????????View?layout?=?inflater.inflate(R.layout.customtoast,??
???????????(ViewGroup)?findViewById(R.id.llToast));??
????????ImageView?image?=?(ImageView)?layout.findViewById(R.id.tvImageToast);??
????????image.setImageResource(R.drawable.page);??
????????TextView?title?=?(TextView)?layout.findViewById(R.id.tvTitleToast);??
????????title.setText("Attention");??
????????TextView?text?=?(TextView)?layout.findViewById(R.id.tvTextToast);??
????????text.setText("Hello,?This?is?Andy!");??
????????Toast?toast?=?new?Toast(getApplicationContext());??
????????toast.setGravity(Gravity.RIGHT?|?Gravity.TOP,?12,?40);??
????????toast.setDuration(Toast.LENGTH_LONG);??
????????toast.setView(layout);??
????????toast.show();??
????}??
}??

[4] 点击Show Toast按钮查看效果如下：

标准方式

标准方式+图片

自定义显示方式