Android java pass int type array to C

Then the previous article "Android Java pass int type data to C" "Android Java Pass string type data to C", continue to practice

Implement public native int[] Arrelementsincrease (int[] intarray);

Project layout

<LinearLayoutxmlns: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 " >    <ButtonAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "click"Android:text= "Pass int type parameter" />    <ButtonAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "Passstring"Android:text= "Pass String type parameter" />    <ButtonAndroid:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:onclick= "Passintarray"Android:text= "Pass int type array" /></LinearLayout>

Implementing the Arrelementsincrease function

/** Class:com_wuyudong_javapassdata_jni * method:arrelementsincrease * Signature: ([i) [I*/jniexport jintarray jnicall java_com_wuyudong_javapassdata_jni_arrelementsincrease (JNIEnv*env, Jobject clazz, Jintarray Jarray) {Jsize len= (*env)getarraylength (env, Jarray); //Jboolean iscopy;      int* Arraypointer = (*env)getintarrayelements (env, Jarray, NULL); inti;  for(i =0; i < Len; i++){          * (Arraypointer + i) + =Ten; }      returnJarray;}

Add the following code to the Mainactivity.java:

     Public void Passintarray (View v) {        intnewint[] {1, 2, 3, 4, 5 };         int [] NewArray = jni.arrelementsincrease (array);          for (int  i:newarray) {            log.d ("test", I + "");        }    }

Android java pass int type array to C