Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class lzl.edu.c

在自定义view中常常会出现这么一个错误

Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class lzl.edu.com.scrolldemos.view.MyImageView
at android.view.LayoutInflater.createView(LayoutInflater.java:616)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at lzl.edu.com.scrolldemos.MainActivity.onCreate(MainActivity.java:11)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)?
at android.app.ActivityThread.access$800(ActivityThread.java:151)?
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)?
at android.os.Handler.dispatchMessage(Handler.java:102)?
at android.os.Looper.loop(Looper.java:135)?
at android.app.ActivityThread.main(ActivityThread.java:5254)?
at java.lang.reflect.Method.invoke(Native Method)?
at java.lang.reflect.Method.invoke(Method.java:372)?
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)?
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)?
Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet]
at java.lang.Class.getConstructor(Class.java:531)
at java.lang.Class.getConstructor(Class.java:495)
at android.view.LayoutInflater.createView(LayoutInflater.java:580)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)?
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)?
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)?
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)?
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)?
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257)?
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)?
at lzl.edu.com.scrolldemos.MainActivity.onCreate(MainActivity.java:11)?
at android.app.Activity.performCreate(Activity.java:5990)?
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)?
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)?
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)?
at android.app.ActivityThread.access$800(ActivityThread.java:151)?
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)?
at android.os.Handler.dispatchMessage(Handler.java:102)?
at android.os.Looper.loop(Looper.java:135)?
at android.app.ActivityThread.main(ActivityThread.java:5254)?
at java.lang.reflect.Method.invoke(Native Method)?
at java.lang.reflect.Method.invoke(Method.java:372)?
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)?
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)?

android:layout_width="wrap_content"
android:layout_height="wrap_content"

android:layout_width="match_parent"
android:layout_height="match_parent"

//重写OnMeasure方法实现wrap_content的适配
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//必须调用这个方法，来改变view的显示大小
setMeasuredDimension(measureWidth(widthMeasureSpec),
measureHeight(heightMeasureSpec));
}
/**
* UNSPECIFIED
* 不指定view的显示大小，常用于自定义view中。
EXACTLY
精确模式，就是我们常常定义的match_parent，或者layout_width="100dp"。告诉view是一个精确的显示。
AT_MOST
我们定义的wrap_content，没有具体的大小。
*/
private int measureWidth(int measureSpc){
int result ;
//通过measureSpe来获取view的显示模式（这里有三种显示模式）
int specMode = MeasureSpec.getMode(measureSpc);
int specSize = MeasureSpec.getSize(measureSpc);
Log.i("获取模式","模式："+specMode+" 尺寸："+specSize);
if(specMode == MeasureSpec.EXACTLY){
result = specSize;
}else{
result = 200;
if(result == MeasureSpec.AT_MOST){
result = Math.min(result,specSize);
}
}
return result;
}
private int measureHeight(int measureSpc){
int result ;
//通过measureSpe来获取view的显示模式（这里有三种显示模式）
int specMode = MeasureSpec.getMode(measureSpc);
int specSize = MeasureSpec.getSize(measureSpc);
Log.i("获取模式","模式："+specMode+" 尺寸："+specSize);
if(specMode == MeasureSpec.EXACTLY){
result = specSize;
}else{
result = 200;
if(result == MeasureSpec.AT_MOST){
result = Math.min(result,specSize);
}
}
return result;
}