Android应用源码之可以任意对本地图片进行添加画笔标示，有保存，删除，调整画笔粗细等功能.zip项目安卓应用源码下载

package org.sprite2d.apps.pp; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.net.URI; import java.util.Locale; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.ProgressDialog; import android.app.WallpaperManager; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.ActivityInfo; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.res.Configuration; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.media.AudioManager; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.preference.PreferenceManager; import android.provider.MediaStore; import android.view.Display; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.animation.Animation; import android.view.animation.TranslateAnimation; import android.widget.AdapterView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.SeekBar; import android.widget.Spinner; import android.widget.Toast; public class Painter extends Activity { public static final int BACKUP_OPENED_ONLY_FROM_OTHER = 10; public static final int BACKUP_OPENED_ALWAYS = 20; public static final int BACKUP_OPENED_NEVER = 100; public static final int BEFORE_EXIT_SUBMIT = 10; public static final int BEFORE_EXIT_SAVE = 20; public static final int BEFORE_EXIT_NO_ACTION = 100; public static final int SHORTCUTS_VOLUME_BRUSH_SIZE = 10; public static final int SHORTCUTS_VOLUME_UNDO_REDO = 20; public static final int ACTION_SAVE_AND_EXIT = 1; public static final int ACTION_SAVE_AND_RETURN = 2; public static final int ACTION_SAVE_AND_SHARE = 3; public static final int ACTION_SAVE_AND_ROTATE = 4; public static final int ACTION_SAVE_AND_OPEN = 5; public static final int REQUEST_OPEN = 1; private static final String SETTINGS_STORAGE = "settings"; public static final String PICTURE_MIME = "image/png"; public static final String PICTURE_PREFIX = "picture_"; public static final String PICTURE_EXT = ".png"; private PainterCanvas mCanvas; private SeekBar mBrushSize; private SeekBar mBrushBlurRadius; private Spinner mBrushBlurStyle; private LinearLayout mPresetsBar; private LinearLayout mPropertiesBar; private RelativeLayout mSettingsLayout; private PainterSettings mSettings; private boolean mIsNewFile = true; private boolean mIsHardwareAccelerated; private boolean mOpenLastFile = true; private int mVolumeButtonsShortcuts; private class SaveTask extends AsyncTask<Void, Void, String> { private ProgressDialog dialog = ProgressDialog.show(Painter.this, getString(R.string.saving_title), getString(R.string.saving_to_sd), true); protected String doInBackground(Void... none) { mCanvas.getThread().freeze(); String pictureName = getUniquePictureName(getSaveDir()); saveBitmap(pictureName); mSettings.preset = mCanvas.getCurrentPreset(); saveSettings(); return pictureName; } protected void onPostExecute(String pictureName) { Uri uri = Uri.fromFile(new File(pictureName)); sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri)); dialog.hide(); mCanvas.getThread().activate(); } } private class SetWallpaperTask extends AsyncTask<Void, Void, Boolean> { private ProgressDialog mDialog = ProgressDialog.show(Painter.this, getString(R.string.wallpaper_title), getString(R.string.aply_wallpaper), true); protected Boolean doInBackground(Void... none) { WallpaperManager wallpaperManager = WallpaperManager .getInstance(Painter.this); Display display = getWindowManager().getDefaultDisplay(); int wallpaperWidth = display.getWidth() * 2; int wallpaperHeight = display.getHeight(); Bitmap currentBitmap = mCanvas.getThread().getBitmap(); Bitmap wallpaperBitmap = Bitmap.createBitmap(wallpaperWidth, wallpaperHeight, Bitmap.Config.ARGB_8888); // wait bitmap while (wallpaperBitmap == null) { try { Thread.sleep(100); } catch (InterruptedException e) { return false; } } Canvas wallpaperCanvas = new Canvas(wallpaperBitmap); wallpaperCanvas.drawColor(mCanvas.getThread().getBackgroundColor()); wallpaperCanvas.drawBitmap(currentBitmap, (wallpaperWidth - currentBitmap.getWidth()) / 2, (wallpaperHeight - currentBitmap.getHeight()) / 2, null); try { wallpaperManager.setBitmap(wallpaperBitmap); return true; } catch (IOException e) { return false; } } protected void onPostExecute(Boolean success) { mDialog.hide(); if (success) { Toast.makeText(Painter.this, R.string.wallpaper_setted, Toast.LENGTH_SHORT).show(); } else { Toast.makeText(Painter.this, R.string.wallpaper_error, Toast.LENGTH_SHORT).show(); } } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setVolumeControlStream(AudioManager.STREAM_MUSIC); setContentView(R.layout.main); mCanvas = (PainterCanvas) findViewById(R.id.canvas); try { ActivityInfo info = getPackageManager().getActivityInfo( getComponentName(), PackageManager.GET_META_DATA); mIsHardwareAccelerated = (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) == ActivityInfo.FLAG_HARDWARE_ACCELERATED; } catch (Exception e) { mIsHardwareAccelerated = false; } loadSettings(); mBrushSize = (SeekBar) findViewById(R.id.brush_size); mBrushSize .setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { public void onStopTrackingTouch(SeekBar seekBar) { if (seekBar.getProgress() > 0) { mCanvas.setPresetSize(seekBar.getProgress()); } } public void onStartTrackingTouch(SeekBar seekBar) { resetPresets(); } public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if (progress > 0) { if (fromUser) { mCanvas.setPresetSize(seekBar.getProgress()); } } else { mBrushSize.setProgress(1); } } }); mBrushBlurRadius = (SeekBar) findViewById(R.id.brush_blur_radius); mBrushBlurRadius .setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { public void onStopTrackingTouch(SeekBar seekBar) { updateBlurSeek(seekBar.getProgress()); if (seekBar.getProgress() > 0) { setBlur(); } else { mCanvas.setPresetBlur(null, 0); } } public void onStartTrackingTouch(SeekBar seekBar) { resetPresets(); } public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if (fromUser) { updateBlurSeek(progress); if (progress > 0) { setBlur(); } else { mCanvas.setPresetBlur(null, 0); } } } }); mBrushBlurStyle = (Spinner) findViewById(R.id.brush_blur_style); mBrushBlurStyle .setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View v, int position, long id) { if (id > 0) { updateBlurSpinner(id); setBlur(); } else { mBrushBlurRadius.setProgress(0); mCanvas.setPresetBlur(null, 0); } } public void onNothingSelected(AdapterView<?> parent) { } }); mPresetsBar = (LinearLayout) findViewById(R.id.presets_bar); mPresetsBar.setVisibility(View.INVISIBLE);