/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.app;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.res.AssetManager;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Build;
import android.os.Bundle;
import android.os.Looper;
import android.os.MessageQueue;
import android.util.AttributeSet;
import android.view.InputQueue;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import java.io.File;
/**
* Convenience for implementing an activity that will be implemented
* purely in native code. That is, a game (or game-like thing). There
* is no need to derive from this class; you can simply declare it in your
* manifest, and use the NDK APIs from there.
*
* <p>A typical manifest would look like:
*
* {@sample development/ndk/platforms/android-9/samples/native-activity/AndroidManifest.xml
* manifest}
*
* <p>A very simple example of native code that is run by NativeActivity
* follows. This reads input events from the user and uses OpenGLES to
* draw into the native activity's window.
*
* {@sample development/ndk/platforms/android-9/samples/native-activity/jni/main.c all}
*/
public class NativeActivity extends Activity implements SurfaceHolder.Callback2,
InputQueue.Callback, OnGlobalLayoutListener {
/**
* Optional meta-that can be in the manifest for this component, specifying
* the name of the native shared library to load. If not specified,
* "main" is used.
*/
public static final String META_DATA_LIB_NAME = "android.app.lib_name";
/**
* Optional meta-that can be in the manifest for this component, specifying
* the name of the main entry point for this native activity in the
* {@link #META_DATA_LIB_NAME} native code. If not specified,
* "ANativeActivity_onCreate" is used.
*/
public static final String META_DATA_FUNC_NAME = "android.app.func_name";
private static final String KEY_NATIVE_SAVED_STATE = "android:native_state";
private NativeContentView mNativeContentView;
private InputMethodManager mIMM;
private long mNativeHandle;
private InputQueue mCurInputQueue;
private SurfaceHolder mCurSurfaceHolder;
final int[] mLocation = new int[2];
int mLastContentX;
int mLastContentY;
int mLastContentWidth;
int mLastContentHeight;
private boolean mDispatchingUnhandledKey;
private boolean mDestroyed;
private native long loadNativeCode(String path, String funcname, MessageQueue queue,
String internalDataPath, String obbPath, String externalDataPath, int sdkVersion,
AssetManager assetMgr, byte[] savedState);
private native void unloadNativeCode(long handle);
private native void onStartNative(long handle);
private native void onResumeNative(long handle);
private native byte[] onSaveInstanceStateNative(long handle);
private native void onPauseNative(long handle);
private native void onStopNative(long handle);
private native void onConfigurationChangedNative(long handle);
private native void onLowMemoryNative(long handle);
private native void onWindowFocusChangedNative(long handle, boolean focused);
private native void onSurfaceCreatedNative(long handle, Surface surface);
private native void onSurfaceChangedNative(long handle, Surface surface,
int format, int width, int height);
private native void onSurfaceRedrawNeededNative(long handle, Surface surface);
private native void onSurfaceDestroyedNative(long handle);
private native void onInputQueueCreatedNative(long handle, long queuePtr);
private native void onInputQueueDestroyedNative(long handle, long queuePtr);
private native void onContentRectChangedNative(long handle, int x, int y, int w, int h);
static class NativeContentView extends View {
NativeActivity mActivity;
public NativeContentView(Context context) {
super(context);
}
public NativeContentView(Context context, AttributeSet attrs) {
super(context, attrs);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
String libname = "main";
String funcname = "ANativeActivity_onCreate";
ActivityInfo ai;
mIMM = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
getWindow().takeSurface(this);
getWindow().takeInputQueue(this);
getWindow().setFormat(PixelFormat.RGB_565);
getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED
| WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
mNativeContentView = new NativeContentView(this);
mNativeContentView.mActivity = this;
setContentView(mNativeContentView);
mNativeContentView.requestFocus();
mNativeContentView.getViewTreeObserver().addOnGlobalLayoutListener(this);
try {
ai = getPackageManager().getActivityInfo(
getIntent().getComponent(), PackageManager.GET_META_DATA);
if (ai.metaData != null) {
String ln = ai.metaData.getString(META_DATA_LIB_NAME);
if (ln != null) libname = ln;
ln = ai.metaData.getString(META_DATA_FUNC_NAME);
if (ln != null) funcname = ln;
}
} catch (PackageManager.NameNotFoundException e) {
throw new RuntimeException("Error getting activity info", e);
}
String path = null;
File libraryFile = new File(ai.applicationInfo.nativeLibraryDir,
System.mapLibraryName(libname));
if (libraryFile.exists()) {
path = libraryFile.getPath();
}
if (path == null) {
throw new IllegalArgumentException("Unable to find native library: " + libname);
}
byte[] nativeSavedState = savedInstanceState != null
? savedInstanceState.getByteArray(KEY_NATIVE_SAVED_STATE) : null;
mNativeHandle = loadNativeCode(path, funcname, Looper.myQueue(),
getAbsolutePath(getFilesDir()), getAbsolutePath(getObbDir()),
getAbsolutePath(getExternalFilesDir(null)),
Build.VERSION.SDK_INT, getAssets(), nativeSavedState);
if (mNativeHandle == 0) {
throw new IllegalArgumentException("Unable to load native library: " + path);
}
super.onCreate(savedInstanceState);
}
private static String getAbsolutePath(File file) {
return (file != null) ? file.getAbsolutePath() : null;
}
@Override
protected void onDestroy() {
mDestroyed = true;
if (mCurSurfaceHolder != null) {
onSurfaceDestroyedNative(mNativeHandle);
mCurSurfaceHolder = null;
}
if (mCurInputQueue != null) {
onInputQueueDestroyedNative(mNativeHandle, mCurInputQueue.getNativePtr());
mCurInputQueue = null;
}
unloadNativeCode(mNativeHandle);
super.onDestroy();
}
@Override
protected void onPause() {
super.onPause();
onPauseNative(mNativeHandle);
}
@Override
protected void onResume() {
super.onResume();
onResumeNative(mNativeHandle);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
byte[] state = onSaveInstanceStateNative(mNativeHandle);
if (state != null) {
outState.putByteArray(KEY_NATIVE_SAVED_STATE, state);
}
}
@Override
protected void onStart() {
super.onStart();
onStartNative(mNativeHandle);
}
@Override
protected void onStop() {
super.onStop();
onStopNative(mNativeHandle);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (!mDestroyed) {
onConfigurationChangedNative(mNativeHandle);
}
}
@Override
public void onLowMemory() {
super.onLowMemory();
if (!mDestroyed) {
onLowMemoryNative(mNativeHandle);
}
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (!mDestroyed) {
onWindowFocusChangedNative(mNativeHandle, hasFocus);
}
}
public void surfaceCreated(SurfaceHolder holder) {
if (!mDestroyed) {
mCurSurfaceHolder = holder;
onSurfaceCreatedNative(mNativeHandle, holder.getSurface());
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (!mDestroyed) {
mCurSurfaceHolder = holder;
onSurfaceChangedNative(mNativeHandle, holder.getSurface(), format, width, height);
}
}
public void surfaceRedrawNeeded(SurfaceHolder holder) {
if (!mDestroyed) {
mCurSurfaceHolder = holder;
onSurfaceRedrawNeededNative(mNativeHandle, holder.getSurface());
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
mCurSurfaceHolder = null;
if (!mDestroyed) {
onSurfaceDestroyedNative(mNativeHandle);
}
}
public void onInputQueueCreated(InputQueue queue) {
if (!mDestroyed) {
mCurInputQueue = queue;
onInputQueueCreatedNative(mNativeHandle, queue.getNativePtr());
}
}
public void onInputQueueDestroyed(InputQueue queue) {
if (!mDestroyed) {
onInputQueueDestroyedNative(mNativeHandle, queue.getNativePtr());
mCurInputQueue = null;
}
}
public void onGlobalLayout() {
mNativeContentView.getLocationInWindow(mLocation);
int w = mNativeContentView.getWidth();
int h = mNativeContentView.getHeight();
if (mLocation[0] != mLastContentX || mLocation[1] != mLastContentY
|| w != mLastContentWidth || h != mLastContentHeight) {
mLastContentX = mLocation[0];
mLastContentY = mLocation[1];
mLastContentWidth = w;
mLastContentHeight = h;
if (!mDestroyed) {
onContentRectChangedNative(mNativeHandle, mLastContentX,
mLastContentY, mLastContentWidth, mLastContentHeight);
}
}
}
void setWindowFlags(int flags, int mask) {
getWindow().setFlags(flags, mask);
}
void setWindowFormat(int format) {
getWindow().setFormat(format);
}
void showIme(int mode) {
mIMM.showSoftInput(mNativeContentView, mode);
}
void hideIme(int mode) {
mIMM.hideSoftInputFromWindow(mNativeContentView.getWindowToken(), mode);
}
}