1、Toast控件:
通过查看源代码,发现Toast里面实现的原理是通过服务Context.LAYOUT_INFLATER_SERVICE获取一个LayoutInflater布局管理器,从而获取一个View对象(TextView),设置内容将其显示
复制代码
public static Toast makeText(Context context, CharSequence text, int duration) {
Toast result = new Toast(context);
LayoutInflater inflate = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = inflate.inflate(com.android.internal.R.layout.transient_notification, null);
TextView tv = (TextView)v.findViewById(com.android.internal.R.id.message);
tv.setText(text);
result.mNextView = v;
result.mDuration = duration;
return result;
}
定义布局文件:
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://www.easck.com/apk/res/android"
android:layout_width="200dip"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/iv_my_toast"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/notification" />










