我的android应用程序捕获图像并将其存储在我创建的应用程序文件夹中的外部存储器中,但是当我在外部存储不可移动的手机上运行应用程序时。我的意思是手机没有SD卡,应用程序捕获图像然后强制关闭。没有SD卡的手机无法将图像写入外部存储设备。
这是我的主要活动
package com.kamp.linguist;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.hardware.Camera;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.kamp.linguist.util.SystemUiHider;
import com.memetix.mst.language.Language;
import com.memetix.mst.translate.Translate;
/**
* An example full-screen activity that shows and hides the system UI (i.e.
* status bar and navigation/system bar) with user interaction.
*
* @see SystemUiHider
*/
@SuppressLint("NewApi")
public class FullscreenActivity extends Activity {
/**
* Whether or not the system UI should be auto-hidden after
* {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
*/
private AutoFocusManager autoFocusManager;
private tesseract tesseract;
private static final boolean AUTO_HIDE = true;
public static final String lang = "eng";
public static String langsrc;
public static String binglangsrc;
public static String langtar;
public static String srcprefkey="srckey";
public static String tarprefkey="tarkey";
public static String langflag=null;
//private static final String TAG = "SimpleAndroidOCR.java";
private static String DATA_PATH="";
private static final String TAG = "CameraActivity";
private final Context context=null;
private Camera camera = null;
public static final String MYPREFS="mysharedprefrences";
/**
* If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
* user interaction before hiding the system UI.
*/
private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
/**
* If set, will toggle the system UI visibility upon interaction. Otherwise,
* will show the system UI visibility upon interaction.
*/
private static final boolean TOGGLE_ON_CLICK = true;
/**
* The flags to pass to {@link SystemUiHider#getInstance}.
*/
private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION;
/**
* The instance of the {@link SystemUiHider} for this activity.
*/
private SystemUiHider mSystemUiHider;
Button srclang ;
Button targetlang ;
String recognizedTexttrans="";
String recognizedText="";
SharedPreferences mysp;
SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
autoFocusManager = new AutoFocusManager(context, camera);
mysp= getSharedPreferences(MYPREFS,Activity.MODE_PRIVATE);
editor=mysp.edit();
/*if(Environment.isExternalStorageRemovable())
{
EXT_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/";
DATA_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/"+langsrc+"/";
IMAGE = EXT_PATH+"capture.jpg";
}else{
EXT_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/";
DATA_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/"+langsrc+"/";
IMAGE = EXT_PATH+"capture.jpg";
}*/
/*String[] paths = new String[] { DATA_PATH, DATA_PATH + "tessdata/" };
for (String path : paths) {
File dir = new File(path);
if (!dir.exists()) {
if (!dir.mkdirs()) {
Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed");
return;
} else {
Log.v(TAG, "Created directory " + path + " on sdcard");
}
}
}*/
setContentView(R.layout.activity_fullscreen);
final View controlsView = findViewById(R.id.fullscreen_content_controls);
final View contentView = findViewById(R.id.fullscreen_content);
// Set up an instance of SystemUiHider to control the system UI for
// this activity.
mSystemUiHider = SystemUiHider.getInstance(this, contentView,
HIDER_FLAGS);
mSystemUiHider.setup();
mSystemUiHider
.setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() {
// Cached values.
int mControlsHeight;
int mShortAnimTime;
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
public void onVisibilityChange(boolean visible) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
// If the ViewPropertyAnimator API is available
// (Honeycomb MR2 and later), use it to animate the
// in-layout UI controls at the bottom of the
// screen.
if (mControlsHeight == 0) {
mControlsHeight = controlsView.getHeight();
}
if (mShortAnimTime == 0) {
mShortAnimTime = getResources().getInteger(
android.R.integer.config_shortAnimTime);
}
controlsView
.animate()
.translationY(visible ? 0 : mControlsHeight)
.setDuration(mShortAnimTime);
} else {
// If the ViewPropertyAnimator APIs aren't
// available, simply show or hide the in-layout UI
// controls.
controlsView.setVisibility(visible ? View.VISIBLE
: View.GONE);
}
if (visible && AUTO_HIDE) {
// Schedule a hide().
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
}
});
// Set up the user interaction to manually show or hide the system UI.
contentView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (TOGGLE_ON_CLICK) {
//autoFocusManager.start();
mSystemUiHider.toggle();
} else {
//autoFocusManager.start();
mSystemUiHider.show();
}
}
});
final View forfocus = findViewById(R.id.forauto);
forfocus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(FullscreenActivity.this,"Source lang: " + langsrc + "\nTarget lang:" + langtar,Toast.LENGTH_SHORT).show();
autoFocusManager.start();
}
});
// Upon interacting with UI controls, delay any scheduled hide()
// operations to prevent the jarring behavior of controls going away
// while interacting with the UI.
findViewById(R.id.targetlang).setOnTouchListener(
mDelayHideTouchListener);
final CameraSurfaceView cameraView =
new CameraSurfaceView(getApplicationContext());
final FrameLayout frame = (FrameLayout)findViewById(R.id.cam);
frame.addView(cameraView);
Button capture = (Button) findViewById(R.id.button);
capture.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//autoFocusManager.start();
cameraView.capture(new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
// Save the image JPEG data to the SD card
File dir = new File(Environment.getExternalStorageDirectory().toString()+"/Linguist");
dir.mkdir();
try {
File file =new File(Environment.getExternalStorageDirectory().toString()+"/Linguist", "capture.jpg") ;
file.mkdir();
if(!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}else{
file.delete();
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
if(file.canWrite()){
Toast.makeText(FullscreenActivity.this,"writeable",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(FullscreenActivity.this,"access denined!!!!",Toast.LENGTH_SHORT).show();
}
FileOutputStream fos=new FileOutputStream(file);
fos.write(data);
fos.close();
Toast.makeText(FullscreenActivity.this,"Successfully created",Toast.LENGTH_SHORT).show();
} catch (FileNotFoundException e) {
Log.e(TAG, "File Note Found", e);
} catch (IOException e) {
Log.e(TAG, "IO Exception", e);
}
// tess();
}
});
}
});
Button tee = (Button) findViewById(R.id.button1);
tee.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
tess();
//trans();
}
});
Button swap = (Button) findViewById(R.id.Button01);
swap.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
String tempsrclang,templangshow = null;
tempsrclang=langtar;
if(langsrc.equals("eng")){
langtar="en";
templangshow="English";
}else if(langsrc.equals("hin")){
langtar="hi";
templangshow="Hindi";
}else if(langsrc.equals("spa")){
langtar="es";
templangshow="Spanish";
}else if(langsrc.equals("chi_tra")){
langtar="zh-CHT";
templangshow="Chinese";
} else if(langsrc.equals("fra")){
langtar="fr";
templangshow="French";
}
targetlang.setText(templangshow);
editor.putString(tarprefkey,templangshow);
if(tempsrclang.equals("en")){
langsrc="eng";
templangshow="English";
}else if(tempsrclang.equals("hi")){
langsrc="hin";
templangshow="Hindi";
}else if(tempsrclang.equals("es")){
langsrc="spa";
templangshow="Spanish";
} else if(tempsrclang.equals("zh-CHT")){
langsrc="chi_tra";
templangshow="Chinese";
} else if(tempsrclang.equals("fr")){
langsrc="fra";
templangshow="French";
}
srclang.setText(templangshow);
editor.putString(srcprefkey,templangshow);
createdir();
editor.commit();
}
});
srclang = (Button) findViewById(R.id.srclang);
srclang.setText(langsrc);
registerForContextMenu(srclang);
srclang.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
openContextMenu(v);
}
});
targetlang = (Button) findViewById(R.id.targetlang);
targetlang.setText(langtar);
registerForContextMenu(targetlang);
targetlang.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
openContextMenu(v);
}
});
restore();
createdir();
}
private void createdir() {
//Boolean stor =Environment.isExternalStorageEmulated();
if(Environment.isExternalStorageRemovable())//stor==true)
{
DATA_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/"+langsrc+"/";
String[] paths = new String[] { DATA_PATH, DATA_PATH + "tessdata/" };
for (String path : paths) {
File dir = new File(path);
if (!dir.exists()) {
if (!dir.mkdirs()) {
Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed");
return;
} else {
Log.v(TAG, "Created directory " + path + " on sdcard");
}
}
}
}else{
DATA_PATH= Environment.getExternalStorageDirectory().toString()+"/Linguist/"+langsrc+"/";
String[] paths = new String[] { DATA_PATH, DATA_PATH + "tessdata/" };
for (String path : paths) {
File dir = new File(path);
if (!dir.exists()) {
if (!dir.mkdirs()) {
Log.v(TAG, "ERROR: Creation of directory " + path + " on sdcard failed");
return;
} else {
Log.v(TAG, "Created directory " + path + " on sdcard");
}
}
}
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater m = getMenuInflater();
if(v.getId()==R.id.srclang){
langflag="source";
m.inflate(R.menu.sourcelang, menu);
}
else if(v.getId()==R.id.targetlang){
langflag="target";
m.inflate(R.menu.targetlang, menu);
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
String strlong =item.getTitle().toString();
String strshort = null;
if(langflag=="source"){
if(strlong.equals("English")){
strshort="eng";
}else if(strlong.equals("Hindi")){
strshort="hin";
}else if(strlong.equals("Spanish")){
strshort="spa";
} else if(strlong.equals("Chinese")){
strshort="chi_tra";
} else if(strlong.equals("French")){
strshort="fra";
}
srclang.setText(item.getTitle());
editor.putString(srcprefkey, strlong);
langsrc=strshort;
createdir();
Toast.makeText(FullscreenActivity.this,"Selected Source Language:"+strlong,Toast.LENGTH_SHORT).show();
}else if(langflag=="target"){
if(strlong.equals("English")){
strshort="en";
}else if(strlong.equals("Hindi")){
strshort="hi";
}else if(strlong.equals("Spanish")){
strshort="es";
}else if(strlong.equals("Chinese")){
strshort="zh-CHT";
}else if(strlong.equals("French")){
strshort="fr";
}
targetlang.setText(item.getTitle());
editor.putString(tarprefkey, strlong);
langtar=strshort;
Toast.makeText(FullscreenActivity.this,"Selected Target Language:"+strlong,Toast.LENGTH_SHORT).show();
}
editor.commit();
//store(str);
return super.onContextItemSelected(item);
}
private void tess(){
tesseract=new tesseract();
recognizedText=tesseract.tess(langsrc);
if(recognizedText.equals(null)){
Toast.makeText(FullscreenActivity.this,"OCR Failed",Toast.LENGTH_SHORT).show();
}
trans();
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Trigger the initial hide() shortly after the activity has been
// created, to briefly hint to the user that UI controls
// are available.
delayedHide(100);
}
/**
* Touch listener to use for in-layout UI controls to delay hiding the
* system UI. This is to prevent the jarring behavior of controls going away
* while interacting with activity UI.
*/
View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (AUTO_HIDE) {
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
return false;
}
};
Handler mHideHandler = new Handler();
Runnable mHideRunnable = new Runnable() {
@Override
public void run() {
mSystemUiHider.hide();
}
};
/**
* Schedules a call to hide() in [delay] milliseconds, canceling any
* previously scheduled calls.
*/
private void delayedHide(int delayMillis) {
mHideHandler.removeCallbacks(mHideRunnable);
mHideHandler.postDelayed(mHideRunnable, delayMillis);
}
public void restore()
{
int mode=Activity.MODE_PRIVATE;
SharedPreferences mysp= getSharedPreferences(MYPREFS, mode);
if(mysp.contains(srcprefkey)){
langsrc=mysp.getString(srcprefkey,"");
}
else{
langsrc="English";
}
if(mysp.contains(tarprefkey)){
langtar=mysp.getString(tarprefkey,"");
}
else{
langtar="Hindi";
}
srclang.setText(langsrc);
targetlang.setText(langtar);
convertsrclang(langsrc);
converttargetlang(langtar);
}
private void convertsrclang(String langsrc2) {
if(langsrc2.equals("English")){
langsrc="eng";
}else if(langsrc2.equals("Hindi")){
langsrc="hin";
}else if(langsrc2.equals("Spanish")){
langsrc="spa";
}else if(langsrc2.equals("Chinese")){
langsrc="chi_tra";
}else if(langsrc2.equals("French")){
langsrc="fra";
}
}
private void converttargetlang(String langtar2) {
if(langtar2.equals("English")){
langtar="en";
}else if(langtar2.equals("Hindi")){
langtar="hi";
}else if(langtar2.equals("Spanish")){
langtar="es";
}else if(langtar2.equals("Chinese")){
langtar="zh-CHT";
}else if(langtar2.equals("French")){
langtar="fr";
}
}
private void trans() {
new MyAsyncTask() {
protected void onPostExecute(Boolean result) {
((TextView) findViewById(R.id.textView1)).setText( "RecoText: "+ recognizedText+"\n TransText:"+recognizedTexttrans);
}
}.execute();
}
class MyAsyncTask extends AsyncTask<Void, Integer, Boolean> {
@Override
protected Boolean doInBackground(Void... arg0) {
convertbingsrclang();
Translate.setClientId("MicrosoftTranslatorJavaAPI");
Translate.setClientSecret("0VHbhXQnJrZ7OwVqcoX/PDZlyLJS9co3cVev1TPr8iM=");
try {
recognizedTexttrans = Translate.execute(recognizedText,Language.fromString(binglangsrc), Language.fromString(langtar));
} catch(Exception e) {
recognizedTexttrans = e.toString();
}
return true;
}
}
private void convertbingsrclang() {
if(langsrc.equals("eng")){
binglangsrc="en";
}else if(langsrc.equals("hin")){
binglangsrc="hi";
}else if(langsrc.equals("spa")){
binglangsrc="es";
}else if(langsrc.equals("chi_tra")){
binglangsrc="zh-CHT";
} else if(langsrc.equals("fra")){
binglangsrc="fr";
}
}
}