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char value;
char createJavaVM()
{
int res;
JavaVM *jvm;
JNIEnv *env;
jmethodID generateNewMnemonic;
jobject mSeedFragment;
jfieldID mnemonicView;
JavaVMInitArgs vm_args;
JavaVMOption options[5];
vm_args.version = JNI_VERSION_1_8;
//最小内存
// static char MinMB[] = "-Xms256M";
//最大内存
//static char MaxMB[] = "-Xmx2048M";
options[0].optionString = "-Djava.compiler=NONE";
options[1].optionString = "-Djava.class.path=E:\\Anda\\MainWallet\\debug";
options[2].optionString = "-verbose:jni";
//最小内存
options[3].optionString = "-Xms512M";
//最大内存
options[4].optionString ="-Xmx4095M";
vm_args.version = JNI_VERSION_1_8;
vm_args.nOptions = 5;
vm_args.options = options;
vm_args.ignoreUnrecognized = JNI_TRUE;
res = JNI_CreateJavaVM(&jvm,(void **)&env,&vm_args);
//return res,env;
if(res >= 0)
{
//创建成功
//获取类com.onets.wallet.ui
jclass cls =env->FindClass("com/onets/wallet/ui/SeedFragment");
//SeedFragment = env->GetObjectClass();
if(cls != 0)
{
//获取类的方法
generateNewMnemonic =env->GetMethodID(cls,"generateNewMnemonic","()V");
//获取成员变量mnemonicView
mnemonicView = env->GetFieldID(cls,"mnemonicView","LTextView");
if(generateNewMnemonic != 0 && mnemonicView !=0)
{
//获得对象
mSeedFragment= env->NewObject(cls,generateNewMnemonic);
//获取成员变量值
value = env->GetCharField(mSeedFragment,mnemonicView);
}
}
jvm->DestroyJavaVM();
return value;
}
}
package com.onets.wallet.ui;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;
import android.widget.Toast;
import com.onets.core.wallet.Wallet;
import com.onets.wallet.util.Fonts;
import com.onets.wallet.util.Fonts.Font;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SeedFragment
extends Fragment
{
private static final Logger log = LoggerFactory.getLogger(SeedFragment.class);
private static final String TAG = "SeedFragment";
private WelcomeFragment.Listener listener;
private boolean hasExtraEntropy = false;
private TextView mnemonicView;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(2131361915, container, false);
TextView seedFontIcon = (TextView)view.findViewById(2131231167);
Fonts.setTypeface(seedFontIcon, Fonts.Font.OPENWALLET_FONT_ICONS);
final Button buttonNext = (Button)view.findViewById(2131230893);
buttonNext.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
SeedFragment.log.info("Clicked restore wallet");
if (SeedFragment.this.listener != null) {
SeedFragment.this.listener.onSeedCreated(SeedFragment.this.mnemonicView.getText().toString());
}
}
});
buttonNext.setEnabled(false);
this.mnemonicView = ((TextView)view.findViewById(2131231164));
generateNewMnemonic();
seedFontIcon.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
SeedFragment.this.hasExtraEntropy = (!SeedFragment.this.hasExtraEntropy);
SeedFragment.this.generateNewMnemonic();
if (SeedFragment.this.hasExtraEntropy) {
Toast.makeText(SeedFragment.this.getActivity(), 2131689706, 0).show();
}
}
});
CheckBox backedUpSeed = (CheckBox)view.findViewById(2131230811);
backedUpSeed.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
buttonNext.setEnabled(isChecked);
}
});
View.OnClickListener generateNewSeedListener = new View.OnClickListener()
{
public void onClick(View v)
{
SeedFragment.this.generateNewMnemonic();
}
};
this.mnemonicView.setOnClickListener(generateNewSeedListener);
view.findViewById(2131231171).setOnClickListener(generateNewSeedListener);
return view;
}
private void generateNewMnemonic()
{
log.info("Clicked generate a new mnemonic");
String mnemonic;
String mnemonic;
if (this.hasExtraEntropy) {
mnemonic = Wallet.generateMnemonicString(256);
} else {
mnemonic = Wallet.generateMnemonicString(192);
}
this.mnemonicView.setText(mnemonic);
}
public void onAttach(Context context)
{
super.onAttach(context);
try
{
this.listener = ((WelcomeFragment.Listener)context);
}
catch (ClassCastException e)
{
throw new ClassCastException(context.toString() + " must implement " + WelcomeFragment.Listener.class);
}
}
public void onDetach()
{
super.onDetach();
this.listener = null;
}
}