一、整體工程圖
二、BaseActivity.java
[java]
package com.jltxgcy.framework;
import android.os.Bundle;
public abstract class BaseActivity extends FrameActivity
{
private String moduleName = "";
private String layoutName = "";//main
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
initActivity();
onAfterOnCreate(savedInstanceState);
}
private void initActivity()
{
getModuleName();
getLayoutName();
initInjector();
loadDefautLayout();
}
protected void onAfterOnCreate(Bundle savedInstanceState)
{
}
private void initInjector()
{
getInjector().injectResource(this);
getInjector().inject(this);
}
private void loadDefautLayout()
{
try
{
int layoutResID = getLayoutLoader().getLayoutID(
layoutName);
setContentView(layoutResID);
} catch (Exception e)
{
e.printStackTrace();
}
}
@Override
public void setContentView(int layoutResID)
{
super.setContentView(layoutResID);
getInjector().injectView(this);
onAfterSetContentView();
}
protected void onAfterSetContentView()
{
}
public String getModuleName()
{
String moduleName = this.moduleName;
if (moduleName == null || moduleName.equalsIgnoreCase(""))
{
moduleName = getClass().getName().substring(0,
getClass().getName().length() – 8);
String arrays[] = moduleName.split("\\.");
this.moduleName = moduleName = arrays[arrays.length – 1]
.toLowerCase();
}
return moduleName;
}
public void setModuleName(String moduleName)
{
this.moduleName = moduleName;
}
public String getLayoutName()
{
String layoutName = this.layoutName;
if (layoutName == null || layoutName.equalsIgnoreCase(""))
{
this.layoutName = this.moduleName;
}
return layoutName;
}
protected void setLayoutName(String layoutName)
{
this.layoutName = layoutName;
}
}
三、FrameActivity.java
[java]
package com.jltxgcy.framework;
import android.app.Activity;
import com.jltxgcy.framework.annotation.Injector;
import com.jltxgcy.framework.layoutloader.ILayoutLoader;
import com.jltxgcy.framework.layoutloader.LayoutLoader;
public class FrameActivity extends Activity
{
private ILayoutLoader mLayoutLoader;
private Injector mInjector;
public ILayoutLoader getLayoutLoader()
{
if (mLayoutLoader == null)
{
mLayoutLoader = LayoutLoader.getInstance(this);
}
return mLayoutLoader;
}
public void setLayoutLoader(ILayoutLoader layoutLoader)
{
this.mLayoutLoader = layoutLoader;
}
public Injector getInjector()
{
if (mInjector == null)
{
mInjector = Injector.getInstance();
}
return mInjector;
}
public void setInjector(Injector injector)
{
this.mInjector = injector;
}
}
四、InjectObject.java
[java]
package com.jltxgcy.framework.annotation;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
@Retention(RUNTIME)
@Target(
{ ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD })
public @interface InjectObject
{
boolean optional() default false;
}
五、InjectResource.java
[java]
package com.jltxgcy.framework.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(
{ ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface InjectResource
{
int id() default -1;
}
六、InjectView.java
[java
package com.jltxgcy.framework.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface InjectView
{
public int id() default -1;
public String click() default "";
public String longClick() default "";
public String focuschange() default "";
public String key() default "";
public String Touch() default "";
}
七、Injector.java
[java]
package com.jltxgcy.framework.annotation;
import java.lang.reflect.Field;
import android.app.Activity;
import android.content.res.Resources;
public class Injector
{
private static Injector instance;
private Injector()
{
}
public static Injector getInstance()
{
if (instance == null)
{
instance = new Injector();
}
return instance;
}
public void inJectAll(Activity activity)
{
// TODO Auto-generated method stub
Field[] fields = activity.getClass().getDeclaredFields();
if (fields != null && fields.length > 0)
{
for (Field field : fields)
{
if (field.isAnnotationPresent(InjectView.class))
{
injectView(activity, field);
} else if (field.isAnnotationPresent(InjectResource.class))
{
injectResource(activity, field);
} else if (field.isAnnotationPresent(InjectObject.class))
{
inject(activity, field);
}
}
}
}
private void inject(Activity activity, Field field)
{
// TODO Auto-generated method stub
try
{
field.setAccessible(true);
field.set(activity, field.getType().newInstance());
} catch (Exception e)
{
e.printStackTrace();
}
}
private void injectView(Activity activity, Field field)
{
// TODO Auto-generated method stub
if (field.isAnnotationPresent(InjectView.class))
{
InjectView viewInject = field.getAnnotation(InjectView.class);
int viewId = viewInject.id();
try
{
field.setAccessible(true);
field.set(activity, activity.findViewById(viewId));
} catch (Exception e)
{
e.printStackTrace();
}
}
}
private void injectResource(Activity activity, Field field)
{
// TODO Auto-generated method stub
if (field.isAnnotationPresent(InjectResource.class))
{
InjectResource resourceJect = field
.getAnnotation(InjectResource.class);
int resourceID = resourceJect.id();
try
{
field.setAccessible(true);
Resources resources = activity.getResources();
String type = resources.getResourceTypeName(resourceID);
if (type.equalsIgnoreCase("string"))
{
field.set(activity,
activity.getResources().getString(resourceID));
} else if (type.equalsIgnoreCase("drawable"))
{
field.set(activity,
activity.getResources().getDrawable(resourceID));
} else if (type.equalsIgnoreCase("layout"))
{
field.set(activity,
activity.getResources().getLayout(resourceID));
} else if (type.equalsIgnoreCase("array"))
{
if (field.getType().equals(int[].class))
{
field.set(activity, activity.getResources()
.getIntArray(resourceID));
} else if (field.getType().equals(String[].class))
{
field.set(activity, activity.getResources()
.getStringArray(resourceID));
} else
{
field.set(activity, activity.getResources()
.getStringArray(resourceID));
}
} else if (type.equalsIgnoreCase("color"))
{
if (field.getType().equals(Integer.TYPE))
{
field.set(activity,
activity.getResources().getColor(resourceID));
} else
{
field.set(activity, activity.getResources()
.getColorStateList(resourceID));
}
}
} catch (Exception e)
{
e.printStackTrace();
}
}
}
public void inject(Activity activity)
{
// TODO Auto-generated method stub
Field[] fields = activity.getClass().getDeclaredFields();
if (fields != null && fields.length > 0)
{
for (Field field : fields)
{
if (field.isAnnotationPresent(InjectObject.class))
{
inject(activity, field);
}
}
}
}
public void injectView(Activity activity)
{
// TODO Auto-generated method stub
Field[] fields = activity.getClass().getDeclaredFields();
if (fields != null && fields.length > 0)
{
for (Field field : fields)
{
if (field.isAnnotationPresent(InjectView.class))
{
injectView(activity, field);
}
}
}
}
public void injectResource(Activity activity)
{
// TODO Auto-generated method stub
Field[] fields = activity.getClass().getDeclaredFields();
if (fields != null && fields.length > 0)
{
for (Field field : fields)
{
if (field.isAnnotationPresent(InjectResource.class))
{
injectResource(activity, field);
}
}
}
}
}
八、ILayoutLoader.java
[java]
package com.jltxgcy.framework.layoutloader;
import android.content.pm.PackageManager.NameNotFoundException;
public interface ILayoutLoader
{
public int getLayoutID(String resIDName) throws ClassNotFoundException,
IllegalArgumentException, IllegalAccessException,
NameNotFoundException;
}
九、LayoutLoader.java
[java]
package com.jltxgcy.framework.layoutloader;
import java.lang.reflect.Field;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.util.Log;
public class LayoutLoader implements ILayoutLoader
{
private static LayoutLoader instance;
private Context mContext;
private LayoutLoader(Context context)
{
this.mContext = context;
}
public static LayoutLoader getInstance(Context context)
{
if (instance == null)
{
instance = new LayoutLoader(context);
}
return instance;
}
public int getLayoutID(String resIDName) throws NameNotFoundException,
ClassNotFoundException, IllegalArgumentException,
IllegalAccessException
{
int resID = readResID("layout", resIDName);
if (resID == 0)
{
}
return resID;
}
public int readResID(String type, String resIDName)
throws NameNotFoundException, ClassNotFoundException,
IllegalArgumentException, IllegalAccessException
{
String packageName;
PackageManager pm = mContext.getPackageManager();
PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(), 0);
packageName = pi.packageName;
if (packageName == null || packageName.equalsIgnoreCase(""))
{
throw new NameNotFoundException("沒有發現類");
}
packageName = packageName + ".R";
Class<?> clazz = Class.forName(packageName);
Class<?> cls = readResClass(clazz, packageName + "$" + type);
if (cls == null)
{
throw new NameNotFoundException("沒有發現類");
}
return readResID(cls, resIDName);
}
public Class<?> readResClass(Class<?> cls, String respackageName)
{
Class<?>[] classes = cls.getDeclaredClasses();
for (int i = 0; i < classes.length; i++)
{
Class<?> tempClass = classes[i];
Log.v("TAReadSystemRes", tempClass.getName());
if (tempClass.getName().equalsIgnoreCase(respackageName))
{
return tempClass;
}
}
return null;
}
public int readResID(Class<?> cls, String resIDName)
throws IllegalArgumentException, IllegalAccessException
{
Field[] fields = cls.getDeclaredFields();
for (int j = 0; j < fields.length; j++)
{
if (fields[j].getName().equalsIgnoreCase(resIDName))
{
return fields[j].getInt(cls);
}
}
return 0;
}
}
十、MainActivity.java
[java]
package com.jltxgcy.iocdemo;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.jltxgcy.framework.BaseActivity;
import com.jltxgcy.framework.annotation.InjectResource;
import com.jltxgcy.framework.annotation.InjectView;
public class MainActivity extends BaseActivity {
@InjectResource(id=R.string.app_name)
String appNameString;
@InjectView(id=R.id.tv_display)
TextView tView;
@InjectView(id=R.id.btn_imagecache)
Button btnImagecache;
@InjectView(id=R.id.btn_http)
Button btnHttp;
@Override
protected void onAfterOnCreate(Bundle savedInstanceState)
{
tView.setText(appNameString);
super.onAfterOnCreate(savedInstanceState);
}
@Override
protected void onAfterSetContentView()
{
// TODO Auto-generated method stub
super.onAfterSetContentView();
OnClickListener onClickListener = new OnClickListener()
{
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
switch (v.getId())
{
case R.id.btn_imagecache:
tView.setText("圖片緩存模塊");
break;
case R.id.btn_http:
tView.setText("http模塊");
break;
default:
break;
}
}
};
btnImagecache.setOnClickListener(onClickListener);
btnHttp.setOnClickListener(onClickListener);
}
}
十一、main.xml
[java]
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:id="@+id/tv_display"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/btn_imagecache"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="圖片緩存模塊" />
<Button
android:id="@+id/btn_http"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="HTTP模塊" />
</LinearLayout>
十二、解釋
field.isAnnotationPresent(InjectView.class)，判斷該字段上是否有註解。如果有可以取得註解的內容。註解是動態解析的。
@Override
@Deprecated
@SuppressWarnings 這些都是註解
1、定義註解
[java]
package com.jltxgcy.framework.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(
{ ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
public @interface InjectResource
{
int id() default -1;
}
2、使用註解（@的方式）
[java]
@InjectResource(id=R.string.app_name)
String appNameString;
3、在程序中動態註入。Inject。
[java
private void injectResource(Activity activity, Field field)
{
// TODO Auto-generated method stub
if (field.isAnnotationPresent(InjectResource.class))
{
InjectResource resourceJect = field
.getAnnotation(InjectResource.class);
int resourceID = resourceJect.id();
try
{
field.setAccessible(true);
Resources resources = activity.getResources();
String type = resources.getResourceTypeName(resourceID);
if (type.equalsIgnoreCase("string"))
{
field.set(activity,
activity.getResources().getString(resourceID));
} else if (type.equalsIgnoreCase("drawable"))
{
field.set(activity,
activity.getResources().getDrawable(resourceID));
} else if (type.equalsIgnoreCase("layout"))
{
field.set(activity,
activity.getResources().getLayout(resourceID));
} else if (type.equalsIgnoreCase("array"))
{
if (field.getType().equals(int[].class))
{
field.set(activity, activity.getResources()
.getIntArray(resourceID));
} else if (field.getType().equals(String[].class))
{
field.set(activity, activity.getResources()
.getStringArray(resourceID));
} else
{
field.set(activity, activity.getResources()
.getStringArray(resourceID));
}
} else if (type.equalsIgnoreCase("color"))
{
if (field.getType().equals(Integer.TYPE))
{
field.set(activity,
activity.getResources().getColor(resourceID));
} else
{
field.set(activity, activity.getResources()
.getColorStateList(resourceID));
}
}
} catch (Exception e)
{
e.printStackTrace();
}
}
}