android Jin String

  2. public class MainActivity extends AppCompatActivity {
  4.     static{
  5.         System.loadLibrary("myndk");
  6.     }
  8.     private TextView textView;
  10.     public native String getStr(String[] oa);
  12.     @Override
  13.     protected void onCreate(Bundle savedInstanceState) {
  14.         super.onCreate(savedInstanceState);
  15.         setContentView(R.layout.activity_main);
  16.         textView = (TextView)findViewById(R.id.text);
  17.         String[] oa={"你呀","我呀"};
  18.         textView.setText(getStr(oa));
  19.     }
  21. ————————————————
  22. 版权声明：本文为CSDN博主「night_iv」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
  23. 原文链接：https://blog.csdn.net/night_iv/article/details/76071686
  5. //C++ (这里是支持C++11的)
  6. #include <iostream>
  7. #include <string>
  9. JNIEXPORT jstring JNICALL
  10. Java_com_myndk_MainActivity_getStr(JNIEnv *env, jobject instance,jobjectArray oa)
  11. {
  12.     jsize size = env->GetArrayLength(oa);
  13.     for(int i=0;i<size;i++)
  14.     {
  15.         jstring obj = (jstring)env->GetObjectArrayElement(oa,i);
  16.         std::string sstr = (std::string)env->GetStringUTFChars(obj,NULL);//得到字符串
  18.     }
  19.     std::string str="NDK";
  20.     return env->NewStringUTF(str.data());
  22. ————————————————
  23. 版权声明：本文为CSDN博主「night_iv」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
  24. 原文链接：https://blog.csdn.net/night_iv/article/details/76071686

android jin 数组

  1. #include <stdio.h>
  2. #include <jni.h>
  3. jint Java_sony_MedicalRecordDemo_MainActivity_decryptionSuccess(JNIEnv* env, jobject thiz,jintArray Attr)
  4. {
  5.     jint* arr;
  6.     jint length;
  7.     arr = (*env)->GetIntArrayElements(env,Attr,NULL);
  8.     length = (*env)->GetArrayLength(env,Attr);
  9.     return arr[0]；
  10. }