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-rw-r--r--examples/01.HelloWorld_Android/android_tools.cpp184
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diff --git a/examples/01.HelloWorld_Android/android_tools.cpp b/examples/01.HelloWorld_Android/android_tools.cpp
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--- a/examples/01.HelloWorld_Android/android_tools.cpp
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-// This file is part of the "Irrlicht Engine".
-// For conditions of distribution and use, see copyright notice in irrlicht.h
-
-#include "android_tools.h"
-#include <android/log.h> // for the occasional debugging, style: __android_log_print(ANDROID_LOG_VERBOSE, "Irrlicht", "%s\n", "We do log");
-
-namespace irr
-{
-namespace android
-{
-
-// Not all DisplayMetrics are available through the NDK.
-// So we access the Java classes with the JNI interface.
-// You can access other Java classes available in Android in similar ways.
-// Function based roughly on the code from here: http://stackoverflow.com/questions/13249164/android-using-jni-from-nativeactivity
-bool getDisplayMetrics(android_app* app, SDisplayMetrics & metrics)
-{
- if (!app || !app->activity || !app->activity->vm )
- return false;
-
- JNIEnv* jni = 0;
- app->activity->vm->AttachCurrentThread(&jni, NULL);
- if (!jni )
- return false;
-
-
- // get all the classes we want to access from the JVM
- jclass classNativeActivity = jni->FindClass("android/app/NativeActivity");
- jclass classWindowManager = jni->FindClass("android/view/WindowManager");
- jclass classDisplay = jni->FindClass("android/view/Display");
- jclass classDisplayMetrics = jni->FindClass("android/util/DisplayMetrics");
-
- if (!classNativeActivity || !classWindowManager || !classDisplay || !classDisplayMetrics)
- {
- app->activity->vm->DetachCurrentThread();
- return false;
- }
-
-
- // Get all the methods we want to access from the JVM classes
- // Note: You can get the signatures (third parameter of GetMethodID) for all
- // functions of a class with the javap tool, like in the following example for class DisplayMetrics:
- // javap -s -classpath myandroidpath/adt-bundle-linux-x86_64-20131030/sdk/platforms/android-10/android.jar android/util/DisplayMetrics
- jmethodID idNativeActivity_getWindowManager = jni->GetMethodID( classNativeActivity
- , "getWindowManager"
- , "()Landroid/view/WindowManager;");
- jmethodID idWindowManager_getDefaultDisplay = jni->GetMethodID( classWindowManager
- , "getDefaultDisplay"
- , "()Landroid/view/Display;");
- jmethodID idDisplayMetrics_constructor = jni->GetMethodID( classDisplayMetrics
- , "<init>"
- , "()V");
- jmethodID idDisplay_getMetrics = jni->GetMethodID( classDisplay
- , "getMetrics"
- , "(Landroid/util/DisplayMetrics;)V");
-
- if (!idNativeActivity_getWindowManager || !idWindowManager_getDefaultDisplay || !idDisplayMetrics_constructor
- || !idDisplay_getMetrics)
- {
- app->activity->vm->DetachCurrentThread();
- return false;
- }
-
-
- // In Java the following code would be: getWindowManager().getDefaultDisplay().getMetrics(metrics);
- // Note: If you need to call java functions in time-critical places you can split getting the jmethodID's
- // and calling the functions into separate functions as you only have to get the jmethodID's once.
- jobject windowManager = jni->CallObjectMethod(app->activity->clazz, idNativeActivity_getWindowManager);
-
- if (!windowManager)
- {
- app->activity->vm->DetachCurrentThread();
- return false;
- }
- jobject display = jni->CallObjectMethod(windowManager, idWindowManager_getDefaultDisplay);
- if (!display)
- {
- app->activity->vm->DetachCurrentThread();
- return false;
- }
- jobject displayMetrics = jni->NewObject( classDisplayMetrics, idDisplayMetrics_constructor);
- if (!displayMetrics)
- {
- app->activity->vm->DetachCurrentThread();
- return false;
- }
- jni->CallVoidMethod(display, idDisplay_getMetrics, displayMetrics);
-
- // access the fields of DisplayMetrics (we ignore the DENSITY constants)
- jfieldID idDisplayMetrics_widthPixels = jni->GetFieldID( classDisplayMetrics, "widthPixels", "I");
- jfieldID idDisplayMetrics_heightPixels = jni->GetFieldID( classDisplayMetrics, "heightPixels", "I");
- jfieldID idDisplayMetrics_density = jni->GetFieldID( classDisplayMetrics, "density", "F");
- jfieldID idDisplayMetrics_densityDpi = jni->GetFieldID( classDisplayMetrics, "densityDpi", "I");
- jfieldID idDisplayMetrics_scaledDensity = jni->GetFieldID( classDisplayMetrics, "scaledDensity", "F");
- jfieldID idDisplayMetrics_xdpi = jni->GetFieldID(classDisplayMetrics, "xdpi", "F");
- jfieldID idDisplayMetrics_ydpi = jni->GetFieldID(classDisplayMetrics, "ydpi", "F");
-
- if ( idDisplayMetrics_widthPixels )
- metrics.widthPixels = jni->GetIntField(displayMetrics, idDisplayMetrics_widthPixels);
- if ( idDisplayMetrics_heightPixels )
- metrics.heightPixels = jni->GetIntField(displayMetrics, idDisplayMetrics_heightPixels);
- if (idDisplayMetrics_density )
- metrics.density = jni->GetFloatField(displayMetrics, idDisplayMetrics_density);
- if (idDisplayMetrics_densityDpi)
- metrics.densityDpi = jni->GetIntField(displayMetrics, idDisplayMetrics_densityDpi);
- if (idDisplayMetrics_scaledDensity)
- metrics.scaledDensity = jni->GetFloatField(displayMetrics, idDisplayMetrics_scaledDensity);
- if ( idDisplayMetrics_xdpi )
- metrics.xdpi = jni->GetFloatField(displayMetrics, idDisplayMetrics_xdpi);
- if ( idDisplayMetrics_ydpi )
- metrics.ydpi = jni->GetFloatField(displayMetrics, idDisplayMetrics_ydpi);
-
- app->activity->vm->DetachCurrentThread();
- return true;
-}
-
-void setSoftInputVisibility(android_app* app, bool visible)
-{
- // NOTE: Unfortunately ANativeActivity_showSoftInput from the NDK does not work and Google does not care.
- // This is based on the solution from @Ratamovic from here: http://stackoverflow.com/questions/5864790/how-to-show-the-soft-keyboard-on-native-activity
-
- if (!app || !app->activity || !app->activity->vm )
- return;
-
- JNIEnv* jni = 0;
- app->activity->vm->AttachCurrentThread(&jni, NULL);
- if (!jni )
- return;
-
- // get all the classes we want to access from the JVM (could be cached)
- jclass classNativeActivity = jni->FindClass("android/app/NativeActivity");
- jclass classInputMethodManager = jni->FindClass("android/view/inputmethod/InputMethodManager");
- jclass classWindow = jni->FindClass("android/view/Window");
- jclass classView = jni->FindClass("android/view/View");
-
- if (classNativeActivity && classInputMethodManager && classWindow)
- {
- // Get all the methods we want to access from the JVM classes (could be cached)
- jmethodID mid_getSystemService = jni->GetMethodID(classNativeActivity, "getSystemService","(Ljava/lang/String;)Ljava/lang/Object;");
- jmethodID mid_showSoftInput = jni->GetMethodID(classInputMethodManager, "showSoftInput", "(Landroid/view/View;I)Z");
-
- jmethodID mid_hideSoftInput = jni->GetMethodID(classInputMethodManager, "hideSoftInputFromWindow", "(Landroid/os/IBinder;I)Z");
- jmethodID mid_getWindow = jni->GetMethodID(classNativeActivity, "getWindow", "()Landroid/view/Window;");
- jmethodID mid_getWindowToken = jni->GetMethodID(classView, "getWindowToken", "()Landroid/os/IBinder;");
- jmethodID mid_getDecorView = jni->GetMethodID(classWindow, "getDecorView", "()Landroid/view/View;");
-
- if ( mid_getSystemService && mid_showSoftInput && mid_hideSoftInput && mid_getWindow && mid_getDecorView && mid_getWindowToken )
- {
- jstring paramInput = jni->NewStringUTF("input_method");
- jobject objInputMethodManager = jni->CallObjectMethod(app->activity->clazz, mid_getSystemService, paramInput);
- jni->DeleteLocalRef(paramInput);
-
- jobject objWindow = jni->CallObjectMethod(app->activity->clazz, mid_getWindow);
-
- if ( visible && objInputMethodManager && objWindow)
- {
- jobject objDecorView = jni->CallObjectMethod(objWindow, mid_getDecorView);
- if ( objDecorView )
- {
- int showFlags = 0;
- jni->CallBooleanMethod(objInputMethodManager, mid_showSoftInput, objDecorView, showFlags);
- }
- }
- else if ( !visible && objInputMethodManager && objWindow )
- {
- jobject objDecorView = jni->CallObjectMethod(objWindow, mid_getDecorView);
- if ( objDecorView )
- {
- jobject objBinder = jni->CallObjectMethod(objDecorView, mid_getWindowToken);
- if ( objBinder )
- {
- int hideFlags = 0;
- jni->CallBooleanMethod(objInputMethodManager, mid_hideSoftInput, objBinder, hideFlags);
- }
- }
- }
- }
- }
-
- app->activity->vm->DetachCurrentThread();
-}
-
-} // namespace android
-} // namespace irr
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