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Android富文本

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package com.ior.activity;


import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;


import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v4.content.CursorLoader;
import android.text.Editable;
import android.text.Html;
import android.text.Html.ImageGetter;
import android.util.DisplayMetrics;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


import com.ior.dao.DemandDAO;
import com.ior.entity.Demand;
import com.ior.service.CheckNetworkState;
import com.ior.service.LoginService;
import com.ior.service.SubmitDemandService;
import com.ior.util.ATManager;


public class NewDemandActivity extends Activity {
/** 公有数据 */
public final static String EXTRA_FILE_CHOOSER = "file_chooser";
/** 私有数据 */
private EditText titleET; // 标题
private EditText contentET; // 内容
private Button attachmentButton;
private Button pictureButton;
private Button recordButton;
private Button saveButton;
private Button insertImgButton; // 保存按钮
private ArrayList<String> filepathes = new ArrayList<String>();
private int screeHeight;
private int screeWidth;
private float MAXSIZE;
private ContentResolver contentresolver;
private Intent fileChooserIntent;
private final int AttachmentCode = 501;
private final int INSERTIMG_CODE = 502;
private final int PictureButtonCode = 504;
private final int RecordButtonCode = 503;


// 有没有id
private long id = 0;
private SimpleDateFormat simpledateformat;
private DemandDAO dao;


private String content;
private String title;
private String status = "新建";
private String time;


protected void onCreate(Bundle savedInstanceState) {
initActivity(savedInstanceState);
setListener();
}


@Override
protected void onResume() {


super.onResume();
}


private void setListener() {
saveButton = (Button) findViewById(R.id.savedemand);
attachmentButton = (Button) findViewById(R.id.attachment);
pictureButton = (Button) findViewById(R.id.takepicture);
insertImgButton = (Button) findViewById(R.id.insertimg);
recordButton = (Button) findViewById(R.id.record);
titleET = (EditText) findViewById(R.id.editTitle);
contentET = (EditText) findViewById(R.id.editContent);
// 监听
saveButton.setOnClickListener(new SaveButtonListener());
attachmentButton.setOnClickListener(new AttachmentButtonListener());
pictureButton.setOnClickListener(new PictureButtonListener());
recordButton.setOnClickListener(new RecordButtonListener());
insertImgButton.setOnClickListener(new InsertImgButtonListener());
}


private void initActivity(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.newdemand);
ATManager.addActivity(this);
getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);


/** DisplayMetrics获取屏幕信息 */
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
screeWidth = displayMetrics.widthPixels;
screeHeight = displayMetrics.heightPixels;


// 本应用程序最高可用内存是多少
int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
MAXSIZE = maxMemory / 8;


dao = new DemandDAO(getApplicationContext());


contentresolver = NewDemandActivity.this.getContentResolver();
}


/** 附件 */
private class AttachmentButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
startChooseFileActivity();
startActivityForResult(fileChooserIntent, AttachmentCode);
} else {
toast(getText(R.string.sdcard_unmonted_hint));
return;
}
}


private void startChooseFileActivity() {
fileChooserIntent = new Intent(NewDemandActivity.this,
FileChooserActivity.class);
}
}


// 插图
private class InsertImgButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent, INSERTIMG_CODE);
}
}


public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_CANCELED) {
return;
}
// 附件
if (resultCode == RESULT_OK && requestCode == AttachmentCode) {
// 获取路径名
String filePath = data.getStringExtra(EXTRA_FILE_CHOOSER);
if (filePath != null) {
toast("选择文件为: " + filePath);
filepathes.add(filePath);
Uri uri = getDrawableURI(R.drawable.ic_file);
Editable eb = contentET.getEditableText();
// 获得光标所在位置
int startPosition = contentET.getSelectionStart();
eb.insert(
startPosition,
Html.fromHtml("<br/><a href=‘" + uri.toString()
+ "‘>附件<img src=‘" + uri.toString()
+ "‘/></a><br/>", imageGetter, null));
} else {
toast(getText(R.string.open_file_failed));
}
}
// 插图
if (resultCode == RESULT_OK && requestCode == INSERTIMG_CODE) {
Uri uri = data.getData();
if (uri != null)
filepathes.add(getRealPathFromURI(uri));


Editable eb = contentET.getEditableText();
// 获得光标所在位置
int startPosition = contentET.getSelectionStart();
eb.insert(
startPosition,
Html.fromHtml("<br/><img src=‘" + uri.toString()
+ "‘/><br/>", imageGetter, null));
}
// 拍照
if (resultCode == RESULT_OK && requestCode == PictureButtonCode) {


Uri uri = data.getData();
if (uri != null)
filepathes.add(getRealPathFromURI(uri));


System.out.println("拍照:" + uri);
String filestr = getAbsoluteImagePath(uri);
System.out.println("filestr" + filestr);


Editable eb = contentET.getEditableText();
// 获得光标所在位置
int startPosition = contentET.getSelectionStart();
eb.insert(
startPosition,
Html.fromHtml("<br/><img src=‘" + uri.toString()
+ "‘/><br/>", imageGetter, null));
}
// 录音
if (resultCode == RESULT_OK && requestCode == RecordButtonCode) {
Uri recordUri = data.getData();
if (recordUri != null)
filepathes.add(getRealPathFromURI(recordUri));


System.out.println("录音:" + recordUri);
String filestr = getAbsoluteImagePath(recordUri);
System.out.println("filestr" + filestr);


Uri uri = getDrawableURI(R.drawable.record_icon);
Editable eb = contentET.getEditableText();
// 获得光标所在位置
int startPosition = contentET.getSelectionStart();
eb.insert(
startPosition,
Html.fromHtml("<br/><a href=‘" + uri.toString()
+ "‘>录音文件<img src=‘" + uri.toString()
+ "‘/></a><br/>", imageGetter, null));
}
}


/** 获取项目资源的URI */
private Uri getDrawableURI(int resourcesid) {
Resources r = getResources();
Uri uri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"
+ r.getResourcePackageName(resourcesid) + "/"
+ r.getResourceTypeName(resourcesid) + "/"
+ r.getResourceEntryName(resourcesid));
return uri;
}


private ImageGetter imageGetter = new ImageGetter() {
@Override
public Drawable getDrawable(String source) {
try {
Uri uri = Uri.parse(source);
Bitmap bitmap = getimage(contentresolver, uri);
return getMyDrawable(bitmap);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
};


private static Drawable getMyDrawable(Bitmap bitmap) {
Drawable drawable = new BitmapDrawable(bitmap);


int imgHeight = drawable.getIntrinsicHeight();
int imgWidth = drawable.getIntrinsicWidth();


drawable.setBounds(0, 0, imgWidth, imgHeight);
return drawable;
}


private Bitmap getimage(ContentResolver cr, Uri uri) {
try {
Bitmap bitmap = null;
BitmapFactory.Options newOpts = new BitmapFactory.Options();
// options.inJustDecodeBounds=true,图片不加载到内存中
newOpts.inJustDecodeBounds = true;
BitmapFactory.decodeStream(cr.openInputStream(uri), null, newOpts);


newOpts.inJustDecodeBounds = false;
int imgWidth = newOpts.outWidth;
int imgHeight = newOpts.outHeight;
// 缩放比,1表示不缩放
int scale = 1;


if (imgWidth > imgHeight && imgWidth > screeWidth) {
scale = (int) (imgWidth / screeWidth);
} else if (imgHeight > imgWidth && imgHeight > screeHeight) {
scale = (int) (imgHeight / screeHeight);
}
newOpts.inSampleSize = scale;// 设置缩放比例
bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri), null,
newOpts);
return bitmap;
} catch (Exception e) {
System.out.println("文件不存在");
return null;
}
}


private void toast(CharSequence hint) {
Toast.makeText(this, hint, Toast.LENGTH_SHORT).show();
}


/** 拍照 */
class PictureButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, PictureButtonCode);
}
}


/** 录音 */
class RecordButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
// 调用Android自带的音频录制应用
Intent intent = new Intent(
MediaStore.Audio.Media.RECORD_SOUND_ACTION);
startActivityForResult(intent, RecordButtonCode);
}
}


class SaveButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
saveDemand();
}
}


private void saveDemand() {
hideSoftInputWin();


content = contentET.getText().toString();
title = titleET.getText().toString();


if (title == null || title.equals("") || content == null
|| content.equals("")) {
prompt("保存失败", "标题或内容为空");
return;
}
if (content.length() > MAXSIZE) {
Toast.makeText(getApplicationContext(), "数据太大,保存失败", 1).show();
return;
}
if (id == 0) {
insert();
} else {
update();
}
uploadDataToWeb();
}


/** 数据同步到云端 */
private void uploadDataToWeb() {
if (CheckNetworkState.isWifi(getApplicationContext())) {
startService();
loadsqlite();
backtoMainTab();


} else {
prompt2("数据同步提示", "当前不是Wifi网络,是否提交数据到云端服务器");
}
}


private void backtoMainTab() {
Intent intent = new Intent(NewDemandActivity.this,
MainTabActivity.class);
titleET.setText("");
contentET.setText("");
startActivity(intent);
}


/** 插入数据 */
private void insert() {
// 富文本转为html
Editable eb = contentET.getEditableText();
content = Html.toHtml(eb);
time = getTime();
dao.open();
ContentValues initValues = new ContentValues();


initValues.put("title", title);
initValues.put("content", content);
initValues.put("createtime", time);
initValues.put("status", status);
initValues.put("fileuri", filepathes.toString());


dao.insertDemand(initValues);
dao.close();
Toast.makeText(getApplicationContext(), "需求数据已经保存", 1).show();
}


// 得到当前时间
private String getTime() {
this.simpledateformat = new SimpleDateFormat("yyyy年MM月dd日HH时:mm分:ss秒 ");
return this.simpledateformat.format(new Date());
}



private void update() {


// 富文本转为html
Editable eb = contentET.getEditableText();
content = Html.toHtml(eb);
time = getTime();
dao.open();
ContentValues initValues = new ContentValues();
initValues.put("title", title);
initValues.put("content", content);
initValues.put("createtime", time);
initValues.put("status", status);
initValues.put("fileuri", filepathes.toString());
dao.update(initValues, id);
dao.close();
Toast.makeText(getApplicationContext(), "文件已经保存", 1).show();
}



@Override
protected void onPause() {
super.onPause();
hideSoftInputWin();
}




/** 退出程序 */
@Override
protected void onDestroy() {
ATManager.exitClient(getApplicationContext());
super.onDestroy();
}


private void hideSoftInputWin() {
/** 隐藏虚拟键盘 */
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(contentET.getWindowToken(), 0);
}


/** 返回键 退出 */
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
exit();
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}


private void exit() {
new AlertDialog.Builder(this).setTitle("退出").setMessage("你确定要退出程序吗?")
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
saveDemand();
onDestroy(); // 退出程序
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
}).show();
}


/** 提示 */
private void prompt(String title, String proinfo) {
new AlertDialog.Builder(this).setTitle(title).setMessage(proinfo)
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
}).show();
}


/** 提示 */
private void prompt2(String title, String proinfo) {
new AlertDialog.Builder(this).setTitle(title).setMessage(proinfo)
.setPositiveButton("同步", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
startService();
loadsqlite();
backtoMainTab();
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
loadsqlite();
backtoMainTab();
}
}).show();
}


/** 启动同步服务 */
private void startService() {
Intent intent = new Intent(this, SubmitDemandService.class);
getApplicationContext().startService(intent);
}


private void loadsqlite() {
Demand demand = new Demand();
String author = LoginActivity.sharedPreferences.getString("name", "");
demand.setAuthor(author);
demand.setTime(time);
demand.setTitle(title);
demand.setStatus(status);
LoginService loginService = new LoginService();
// 这里不是真的校验用户信息,是重新给 LoginService.demandlistSQLITE 赋值
loginService.checkUser(getApplicationContext());
}


private String getAbsoluteImagePath(Uri uri) {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, proj, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}


/** 从uri获取文件路径,uri以content开始 */
private String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
CursorLoader loader = new CursorLoader(getApplicationContext(),
contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}

原文：http://blog.csdn.net/sinat_28238111/article/details/51362084

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