我需要帮助我的mms应用程序的这个文件. getActivity()导致生成错误.
错误：找不到符号：method getActivity()
我已经尝试了许多事情,使这项工作到目前为止,如扩展PreferenceFragment – 然后getActivity()是好的,但这个解决方案打破了其他的东西.
有谁知道为什么我得到这个错误？
我的代码：
package com.android.mms.themes; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.URISyntaxException; import android.app.Activity; import android.app.ActionBar; import android.app.Fragment; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.Drawable; import android.graphics.Rect; import android.net.Uri; import android.os.Bundle; import android.os.SystemProperties; import android.preference.CheckBoxPreference; import android.preference.EditTextPreference; import android.preference.ListPreference; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceFragment; import android.preference.PreferenceGroup; import android.preference.PreferenceManager; import android.preference.Preference.OnPreferenceChangeListener; import android.preference.PreferenceScreen; import android.provider.MediaStore; import android.text.Spannable; import android.util.Log; import android.view.Display; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.Window; import com.android.mms.R; import com.android.mms.ui.ColorPickerPreference; public class ThemesMessageList extends PreferenceActivity implements Preference.OnPreferenceChangeListener { // Menu entries private static final int THEMES_RESTORE_DEFAULTS = 1; // Layout Style public static final String PREF_TEXT_CONV_LAYOUT = "pref_text_conv_layout"; // Msg background public static final String PREF_MESSAGE_BG = "pref_message_bg"; private static final String CUSTOM_IMAGE = "message_list_image.jpg"; private static final int REQUEST_PICK_WALLPAPER = 201; private static final int SELECT_WALLPAPER = 5; // Bubble types public static final String PREF_BUBBLE_TYPE = "pref_bubble_type"; public static final String PREF_BUBBLE_FILL_PARENT = "pref_bubble_fill_parent"; // CheckBox preferences public static final String PREF_USE_CONTACT = "pref_use_contact"; public static final String PREF_SHOW_AVATAR = "pref_show_avatar"; // Colorpicker preferences send public static final String PREF_SENT_TEXTCOLOR = "pref_sent_textcolor"; public static final String PREF_SENT_CONTACT_COLOR = "pref_sent_contact_color"; public static final String PREF_SENT_DATE_COLOR = "pref_sent_date_color"; public static final String PREF_SENT_TEXT_BG = "pref_sent_text_bg"; public static final String PREF_SENT_SMILEY = "pref_sent_smiley"; // Colorpicker preferences received public static final String PREF_RECV_TEXTCOLOR = "pref_recv_textcolor"; public static final String PREF_RECV_CONTACT_COLOR = "pref_recv_contact_color"; public static final String PREF_RECV_DATE_COLOR = "pref_recv_date_color"; public static final String PREF_RECV_TEXT_BG = "pref_recv_text_bg"; public static final String PREF_RECV_SMILEY = "pref_recv_smiley"; // message background ColorPickerPreference mMessageBackground; // send ColorPickerPreference mSentTextColor; ColorPickerPreference mSentDateColor; ColorPickerPreference mSentContactColor; ColorPickerPreference mSentTextBgColor; ColorPickerPreference mSentSmiley; // received ColorPickerPreference mRecvTextColor; ColorPickerPreference mRecvContactColor; ColorPickerPreference mRecvDateColor; ColorPickerPreference mRecvTextBgColor; ColorPickerPreference mRecvSmiley; private CheckBoxPreference mUseContact; private CheckBoxPreference mShowAvatar; private CheckBoxPreference mBubbleFillParent; private ListPreference mTextLayout; private ListPreference mBubbleType; private Preference mCustomImage; private SharedPreferences sp; protected Context mContext; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mContext = getActivity(); loadThemePrefs(); ActionBar actionBar = getActionBar(); actionBar.setDisplayHomeAsUpEnabled(true); } public void loadThemePrefs() { // Load the preferences from an XML resource addPreferencesFromResource(R.xml.preferences_themes_msglist); PreferenceScreen prefSet = getPreferenceScreen(); sp = PreferenceManager.getDefaultSharedPreferences(this); mUseContact = (CheckBoxPreference) prefSet.findPreference(PREF_USE_CONTACT); mShowAvatar = (CheckBoxPreference) prefSet.findPreference(PREF_SHOW_AVATAR); mBubbleFillParent = (CheckBoxPreference) prefSet.findPreference(PREF_BUBBLE_FILL_PARENT); mTextLayout = (ListPreference) findPreference(PREF_TEXT_CONV_LAYOUT); mTextLayout.setOnPreferenceChangeListener(this); mTextLayout.setSummary(mTextLayout.getEntry()); mBubbleType = (ListPreference) findPreference(PREF_BUBBLE_TYPE); mBubbleType.setOnPreferenceChangeListener(this); mBubbleType.setSummary(mBubbleType.getEntry()); mCustomImage = findPreference("pref_custom_image"); mMessageBackground = (ColorPickerPreference) findPreference(PREF_MESSAGE_BG); mMessageBackground.setOnPreferenceChangeListener(this); mSentTextColor = (ColorPickerPreference) findPreference(PREF_SENT_TEXTCOLOR); mSentTextColor.setOnPreferenceChangeListener(this); mSentContactColor = (ColorPickerPreference) findPreference(PREF_SENT_TEXTCOLOR); mSentContactColor.setOnPreferenceChangeListener(this); mSentDateColor = (ColorPickerPreference) findPreference(PREF_SENT_TEXTCOLOR); mSentDateColor.setOnPreferenceChangeListener(this); mSentTextBgColor = (ColorPickerPreference) findPreference(PREF_SENT_TEXTCOLOR); mSentTextBgColor.setOnPreferenceChangeListener(this); mSentSmiley = (ColorPickerPreference) findPreference(PREF_SENT_SMILEY); mSentSmiley.setOnPreferenceChangeListener(this); mRecvTextColor = (ColorPickerPreference) findPreference(PREF_RECV_TEXTCOLOR); mRecvTextColor.setOnPreferenceChangeListener(this); mRecvContactColor = (ColorPickerPreference) findPreference(PREF_RECV_TEXTCOLOR); mRecvContactColor.setOnPreferenceChangeListener(this); mRecvDateColor = (ColorPickerPreference) findPreference(PREF_RECV_TEXTCOLOR); mRecvDateColor.setOnPreferenceChangeListener(this); mRecvTextBgColor = (ColorPickerPreference) findPreference(PREF_RECV_TEXT_BG); mRecvTextBgColor.setOnPreferenceChangeListener(this); mRecvSmiley = (ColorPickerPreference) findPreference(PREF_RECV_SMILEY); mRecvSmiley.setOnPreferenceChangeListener(this); } @Override public boolean onPreferenceChange(Preference preference,Object newValue) { boolean result = false; if (preference == mMessageBackground) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mMessageBackground.setSummary(hex); } else if (preference == mSentTextColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mSentTextColor.setSummary(hex); } else if (preference == mSentContactColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mSentContactColor.setSummary(hex); } else if (preference == mSentDateColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mSentDateColor.setSummary(hex); } else if (preference == mSentTextBgColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mSentTextBgColor.setSummary(hex); } else if (preference == mSentSmiley) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mSentSmiley.setSummary(hex); } else if (preference == mRecvTextColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mRecvTextColor.setSummary(hex); } else if (preference == mRecvContactColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mRecvContactColor.setSummary(hex); } else if (preference == mRecvDateColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mRecvDateColor.setSummary(hex); } else if (preference == mRecvTextBgColor) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mRecvTextBgColor.setSummary(hex); } else if (preference == mRecvSmiley) { String hex = ColorPickerPreference.convertToARGB(Integer.valueOf(String .valueOf(newValue))); mRecvSmiley.setSummary(hex); } else if (preference == mTextLayout) { int index = mTextLayout.findIndexOfValue((String) newValue); mTextLayout.setSummary(mTextLayout.getEntries()[index]); return true; } else if (preference == mBubbleType) { int index = mBubbleType.findIndexOfValue((String) newValue); mBubbleType.setSummary(mBubbleType.getEntries()[index]); return true; } return result; } @Override public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,Preference preference) { boolean value; if (preference == mCustomImage) { Display display = getActivity().getWindowManager().getDefaultDisplay(); int width = display.getWidth(); int height = display.getHeight(); Rect rect = new Rect(); Window window = getActivity().getWindow(); window.getDecorView().getWindowVisibleDisplayFrame(rect); int statusBarHeight = rect.top; int contentViewTop = window.findViewById(Window.ID_ANDROID_CONTENT).getTop(); int titleBarHeight = contentViewTop - statusBarHeight; Intent intent = new Intent(Intent.ACTION_GET_CONTENT,null); intent.setType("image/*"); intent.putExtra("crop","true"); boolean isPortrait = getResources() .getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT; intent.putExtra("aspectX",isPortrait ? width : height - titleBarHeight); intent.putExtra("aspectY",isPortrait ? height - titleBarHeight : width); intent.putExtra("outputX",width); intent.putExtra("outputY",height); intent.putExtra("scale",true); intent.putExtra("scaleUpIfNeeded",true); intent.putExtra(MediaStore.EXTRA_OUTPUT,getCustomImageExternalUri()); intent.putExtra("outputFormat",Bitmap.CompressFormat.PNG.toString()); startActivityForResult(intent,REQUEST_PICK_WALLPAPER); return true; } else if (preference == mUseContact) { value = mUseContact.isChecked(); } else if (preference == mShowAvatar) { value = mShowAvatar.isChecked(); } else if (preference == mBubbleFillParent) { value = mShowAvatar.isChecked(); } return super.onPreferenceTreeClick(preferenceScreen,preference); } private void restoreThemeMessageListDefaultPreferences() { PreferenceManager.getDefaultSharedPreferences(this).edit().clear().apply(); setPreferenceScreen(null); loadThemePrefs(); } public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.clear(); menu.add(R.menu.themes_message_list); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case THEMES_RESTORE_DEFAULTS: restoreThemeMessageListDefaultPreferences(); return true; case R.id.custom_image_delete: deleteCustomImage(); return true; case android.R.id.home: // The user clicked on the Messaging icon in the action bar. Take them back from // wherever they came from finish(); return true; } return false; } private void deleteCustomImage() { mContext.deleteFile(CUSTOM_IMAGE); } private Uri getCustomImageExternalUri() { File dir = mContext.getExternalCacheDir(); File wallpaper = new File(dir,CUSTOM_IMAGE); return Uri.fromFile(wallpaper); } public void onActivityResult(int requestCode,int resultCode,Intent data) { if (resultCode == Activity.RESULT_OK) { if (requestCode == REQUEST_PICK_WALLPAPER) { FileOutputStream wallpaperStream = null; try { wallpaperStream = mContext.openFileOutput(CUSTOM_IMAGE,Context.MODE_WORLD_READABLE); } catch (FileNotFoundException e) { return; // NOOOOO } Uri selectedImageUri = getCustomImageExternalUri(); Bitmap bitmap = BitmapFactory.decodeFile(selectedImageUri.getPath()); bitmap.compress(Bitmap.CompressFormat.PNG,100,wallpaperStream); } } } public void copy(File src,File dst) throws IOException { InputStream in = new FileInputStream(src); FileOutputStream out = new FileOutputStream(dst); // Transfer bytes from in to out byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf,len); } in.close(); out.close(); } }
解决方法
在Activity中不存在getActivity(),所以要获取Activity的Context,只需使用这个intstead：
mContext = this;
