androidtoastandroid开发getrootview和getdecorview的区别

android toast 怎么用

1. Toast.makeText(getApplicationContext(),?"默认样式的Toast",?Toast.LENGTH_SHORT).show();//?显示时间较短2. Toast?toast?=?Toast.makeText(getApplicationContext(),?"自定义位置?的Toast",?Toast.LENGTH_LONG);//显示时间较长? toast.setGravity(Gravity.CENTER,?0,?0);//?居中显示? toast.show();3. Toast?toast?=?Toast.makeText(getApplicationContext(),?"带图片的Toast",?3000);//?显示时间也可以是数字 toast.setGravity(Gravity.TOP,?0,?0);//?最上方显示 LinearLayout?toastLayout?=?(LinearLayout)?toast.getView(); ImageView?imageView?=?new?ImageView(getApplicationContext()); imageView.setImageResource(R.drawable.icon); toastLayout.addView(imageView,?0);//?0?图片在文字的上方?，?1?图片在文字的下方 toast.show();4. LayoutInflater?inflater?=?getLayoutInflater();//?LayoutInflater对象 View?layout?=?inflater.inflate(R.layout.custom_view,?null); ImageView?imageView?=?(ImageView)?layout.findViewById(R.id.imageView); TextView?text?=?(TextView)?layout.findViewById(R.id.textView); imageView.setImageResource(R.drawable.icon); text.setText("完全自定义的Toast"); Toast?toast?=?new?Toast(getApplicationContext()); //?底部?、水平居中,X偏移50?Y偏移50 toast.setGravity(Gravity.CENTER_HORIZONTAL?|?Gravity.BOTTOM,?50,?50); toast.setDuration(Toast.LENGTH_SHORT); toast.setView(layout); toast.show();

安卓的toast 在ios里叫什么意思

这个类的接口设计如下： ? #import #import typedef enum iToastGravity { iToastGravityTop = 1000001, iToastGravityBottom, iToastGravityCenter }iToastGravity; enum iToastDuration { iToastDurationLong = 10000, iToastDurationShort = 1000, iToastDurationNormal = 3000 }iToastDuration; typedef enum iToastType { iToastTypeInfo = -100000, iToastTypeNotice, iToastTypeWarning, iToastTypeError }iToastType; @class iToastSettings; @interface iToast : NSObject { iToastSettings *_settings; NSInteger offsetLeft; NSInteger offsetTop; NSTimer *timer; UIView *view; NSString *text; } - (void) show; - (iToast *) setDuration:(NSInteger ) duration; - (iToast *) setGravity:(iToastGravity) gravity offsetLeft:(NSInteger) left offsetTop:(NSInteger); - (iToast *) setGravity:(iToastGravity) gravity; - (iToast *) setPostion:(CGPoint) position; + (iToast *) makeText:(NSString *) text; -(iToastSettings *) theSettings; @end ===The interface of the SharedSettings === @interface iToastSettings : NSObject{ NSInteger duration; iToastGravity gravity; CGPoint postition; iToastType toastType; NSDictionary *images; BOOL positionIsSet; } @property(assign) NSInteger duration; @property(assign) iToastGravity gravity; @property(assign) CGPoint postition; @property(readonly) NSDictionary *images; - (void) setImage:(UIImage *)img forType:(iToastType) type; + (iToastSettings *) getSharedSettings; @end 从接口上看，可以设置风格和显示时间，显示位置等，但是从实现代码上看是图片显示只是预留的接口，尚未实现。

其显示的位置在设备旋转时也没有进行处理，没有进行横屏等其他方向的显示控制。

简单的调用 ? 1 [[iToast makeText:NSLocalizedString(@"The activity has been essfully saved.",@"")] show]; 设置显示位置 ? 1 [[[iToast makeText:NSLocalizedString(@"The activity has been essfully saved.", @"")] setGravity:iToastGravityBottom] 设置显示位置和显示时长类型 ? 1 [[[[iToast makeText:NSLocalizedString(@"Something to display a very long time",@"")] setGravity

Android问题：怎么在其它类中用Toast

A.this 就是A这个对象了。

1. 如果B是A的内嵌类或A内定义的方法： Toast.makeText(A.this, "提示信息", Toast.LENGTH_SHORT).show(); 2. 否则可以把A对象当做Context mContext传给B，B内实现时再 Toast.makeText(mContext, "提示信息", Toast.LENGTH_SHORT).show();

android开发getrootview和getdecorview的区别

if (v.getRootView() == getWindow().getDecorView()) { ToastUtils.showToast("same"); } 你试试 ，Activity中 RootView 顶级就是DecorView（此View不包含通知栏) ,也可以用Android tools layout inspector 查看