android 富文本编辑器 示例源码下载

【核心代码】

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);
	}
}