Toast是Android中用来显示显示信息的一种机制，和Dialog不一样的是，Toast是没有焦点的，而且Toast显示的时间有限，过一定的时间就会自动消失。
1.默认效果:
代码:
T oast.makeT ext(getApplicationContext(), "默认T oast样式",
T oast.LENGTH_SHORT).show();
2.自定义显示位置效果:
代码:
toast = T oast.makeT ext(getApplicationContext(),
"自定义位置T oast", T oast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
3.带图片效果:
代码
toast = T oast.makeT ext(getApplicationContext(),
"带图片的Toast", T oast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
LinearLayout toastView = (LinearLayout) View();
ImageView imageCodeProject = new ImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.icon);
toastView.addView(imageCodeProject, 0);
toast.show();
4.完全自定义效果:
安卓intent用法
代码
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.custom,
(ViewGroup) findViewById(R.id.llT oast));
ImageView image = (ImageView) layout
.findViewById(R.id.tvImageT oast);
image.setImageResource(R.drawable.icon);
T extView title = (T extView) layout.findViewById(R.id.tvTitleToast);
title.setT ext("Attention");
T extView text = (T extView) layout.findViewById(R.id.tvTextT oast);
text.setT ext("完全自定义Toast");
toast = new T oast(getApplicationContext());
toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
toast.setDuration(T oast.LENGTH_LONG);
toast.setView(layout);
toast.show();
5.其他线程:
代码:
new Thread(new Runnable() { public void run() {
showToast();
}
}).start();
android.permission.ACCESS_CHECKIN_PROPERTIES
允许读写访问”properties”表在checkin数据库中，改值可以修改上传( Allows read/write access to the “properties” table in the checkin database, to change values that get uploaded)
android.permission.ACCESS_COARSE_LOCATION
允许一个程序访问CellID或WiFi热点来获取粗略的位置(Allows an application to access coarse (e.g., Cell-ID, WiFi) location)
android.permission.ACCESS_FINE_LOCATION
允许一个程序访问精良位置(如GPS) (Allows an application to access fine (e.g., GPS) location)
android.permission.ACCESS_LOCATION_EXTRA_COMMANDS
允许应用程序访问额外的位置提供命令(Allows an application to access extra location provider commands)
android.permission.ACCESS_MOCK_LOCATION
允许程序创建模拟位置提供用于测试(Allows an application to create mock location providers for testing)
android.permission.ACCESS_NETWORK_STATE
允许程序访问有关GSM网络信息(Allows applications to access information about networks)
android.permission.ACCESS_SURFACE_FLINGER
允许程序使用SurfaceFlinger底层特性(Allows an application to use SurfaceFlinger’s low level features)
android.permission.ACCESS_WIFI_STATE
允许程序访问Wi-Fi网络状态信息(Allows applications to access information about Wi-Fi networks)
android.permission.ADD_SYSTEM_SERVICE
允许程序发布系统级服务(Allows an application to publish system-level services). android.permission.BATTERY_STATS
允许程序更新手机电池统计信息(Allows an application to update the collected battery statistics)
android.permission.BLUETOOTH
允许程序连接到已配对的蓝牙设备(Allows applications to connect to paired bluetooth
devices)
android.permission.BLUETOOTH_ADMIN
允许程序发现和配对蓝牙设备(Allows applications to discover and pair bluetooth devices) android.permission.BRICK
请求能够禁用设备(非常危险)(Required to be able to disable the device (very *erous!).) android.permission.BROADCAST_PACKAGE_REMOVED
允许程序广播一个提示消息在一个应用程序包已经移除后(Allows an application to broadcast a notification that an application package has been removed)
android.permission.BROADCAST_STICKY
允许一个程序广播常用intents(Allows an application to broadcast sticky intents) android.permission.CALL_PHONE
允许一个程序初始化一个电话拨号不需通过拨号用户界面需要用户确认(Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call being placed.)
android.permission.CALL_PRIVILEGED
允许一个程序拨打任何号码，包含紧急号码无需通过拨号用户界面需要用户确认(Allows an application to call any phone number, including emergency numbers, without going through the Dialer user interface for the user to confirm the call being placed)
android.permission.CAMERA
请求访问使用照相设备(Required to be able to access the camera device. )
android.permission.CHANGE_COMPONENT_ENABLED_STATE
允许一个程序是否改变一个组件或其他的启用或禁用(Allows an application to change whether an application component (other than its own) is enabled or not. )
android.permission.CHANGE_CONFIGURATION
允许一个程序修改当前设置，如本地化(Allows an application to modify the current configuration, such as locale. )
android.permission.CHANGE_NETWORK_STATE
允许程序改变网络连接状态(Allows applications to change network connectivity state) android.permission.CHANGE_WIFI_STATE
允许程序改变Wi-Fi连接状态(Allows applications to change Wi-Fi connectivity state) android.permission.CLEAR_APP_CACHE
允许一个程序清楚缓存从所有安装的程序在设备中(Allows an application to clear the caches of all installed applications on the device. )
android.permission.CLEAR_APP_USER_DATA
允许一个程序清除用户设置(Allows an application to clear user data)

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