Java 导致更多问题的未知Uri（Android）
我一直在努力解决这个问题很长时间了。我会张贴什么，我认为是足够的，如果你需要更多的信息，然后请问我Java 导致更多问题的未知Uri（Android）,java,android,eclipse,android-studio,fatal-error,Java,Android,Eclipse,Android Studio,Fatal Error,我一直在努力解决这个问题很长时间了。我会张贴什么，我认为是足够的，如果你需要更多的信息，然后请问我 public class PInfoProvider extends ContentProvider { private PInfoDatabase mOpenHelper; private static String TAG = PInfoProvider.class.getSimpleName(); private static final UriMatcher sU
public class PInfoProvider extends ContentProvider {
private PInfoDatabase mOpenHelper;
private static String TAG = PInfoProvider.class.getSimpleName();
private static final UriMatcher sUriMatcher = buildUriMatcher();
private static final int PINFOS = 100;
private static final int PINFOS_ID = 101;
private static UriMatcher buildUriMatcher(){
final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
final String authority = PInfoContract.CONTENT_AUTHORITY;
matcher.addURI(authority, "PInfos", PINFOS);
matcher.addURI(authority, "Pinfos/*", PINFOS_ID);
return matcher;
}
@Override
public boolean onCreate() {
mOpenHelper = new PInfoDatabase(getContext());
return true;
}
private void deleteDatabase(){
mOpenHelper.close();
PInfoDatabase.deleteDatabase(getContext());
mOpenHelper = new PInfoDatabase(getContext());
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
final SQLiteDatabase db = mOpenHelper.getReadableDatabase();
final int match = sUriMatcher.match(uri);
SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
queryBuilder.setTables(PInfoDatabase.Tables.PInfo);
switch(match){
case PINFOS:
//do nothing
break;
case PINFOS_ID:
String id = PInfoContract.PInfos.getPInfoId(uri);
queryBuilder.appendWhere(BaseColumns._ID + "=" + id);
break;
default:
throw new IllegalArgumentException("Unknown Uri: " + uri);
}
Cursor cursor = queryBuilder.query(db, projection, selection, selectionArgs, null, null, sortOrder);
//projection in content provider means the list of columns you want to return.
return cursor;
}
@Override
public String getType(Uri uri) {
final int match = sUriMatcher.match(uri);
switch(match){
case PINFOS:
return PInfoContract.PInfos.CONTENT_TYPE;
case PINFOS_ID:
return PInfoContract.PInfos.CONTENT_ITEM_TYPE;
default:
throw new IllegalArgumentException("Unknown Uri: " + uri);
}
}
@Override
public Uri insert(Uri uri, ContentValues values) {
//ContentValues: is a list of content values of our database such as the email and username. Contains the column names and the values we want to associate to it when we're writing to the database/
Log.v(TAG, "insert(uri=" + uri + ", values =" + values.toString());
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final int match = sUriMatcher.match(uri);
switch(match){
//only using the PInfo and not the ID becuase it's to insert only.
case PINFOS:
long recordID = db.insertOrThrow(PInfoDatabase.Tables.PInfo, null, values);
return PInfoContract.PInfos.buildPInfoUri(String.valueOf(recordID));
default:
throw new IllegalArgumentException("Unknown Uri: " + uri);
}
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
Log.v(TAG, "delete(uri=" + uri);
if(uri.equals(PInfoContract.URI_TABLE)){
deleteDatabase();
return 0;
//This will be executed if the user didn't input a valid record id.
//Base content uri doesn't contain an ID nor a path.
}
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final int match = sUriMatcher.match(uri);
String selectionCriteria = selection;
switch(match){
/*
case PInfo:
If this was called and didn't "break" it would change all the records in the table.
We will still leave it out because we added the database deletion code above.
break;
*/
case PINFOS_ID:
String id = PInfoContract.PInfos.getPInfoId(uri);
selectionCriteria = BaseColumns._ID + "=" + id
+ (!TextUtils.isEmpty(selection) ? "AND (" + selection + ")" : "");
return db.delete(PInfoDatabase.Tables.PInfo, selectionCriteria, selectionArgs);
default:
throw new IllegalArgumentException("Unknown Uri: " + uri);
}
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
Log.v(TAG, "update(uri=" + uri + ", values =" + values.toString());
final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
final int match = sUriMatcher.match(uri);
String selectionCriteria = selection;
//We set selectionCriteria to equal selection in the case PInfo case was chosen. After all,
//we still need to record the selection.
switch(match){
case PINFOS:
//do nothing
//If this was called and didn't "break" it would change all the records in the table.
break;
case PINFOS_ID:
String id = PInfoContract.PInfos.getPInfoId(uri);
selectionCriteria = BaseColumns._ID + "=" + id
+ (!TextUtils.isEmpty(selection) ? "AND (" + selection + ")" : "");
break;
default:
throw new IllegalArgumentException("Unknown Uri: " + uri);
}
return db.update(PInfoDatabase.Tables.PInfo, values, selectionCriteria, selectionArgs);
}
}
public class AddActivity extends FragmentActivity{
private final String LOG_TAG = AddActivity.class.getSimpleName();
private TextView mWebsiteTextView, mEmailTextView, mUsernameTextView, mPasswordTextView;
private Button mButton;
private ContentResolver mContentResolver;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_edit);
getActionBar().setDisplayHomeAsUpEnabled(true); //returns up one level rather than back to the top level
mWebsiteTextView = (TextView) findViewById(R.id.pinfoWebsite);
mEmailTextView = (TextView) findViewById(R.id.pinfoEmail);
mUsernameTextView= (TextView) findViewById(R.id.pinfoUsername);
mPasswordTextView = (TextView) findViewById(R.id.pinfoPassword);
mContentResolver = AddActivity.this.getContentResolver();
mButton = (Button) findViewById(R.id.saveButton);
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isValid()){
ContentValues values = new ContentValues(); //Content Values Class is used to store a set of values that the ContentResolver can process.
values.put(PInfoContract.PInfoColumns.PINFO_WEBSITE, mWebsiteTextView.getText().toString()); //.put add values ot the set & .toString() to convert it to the right format
values.put(PInfoContract.PInfoColumns.PINFO_EMAIL, mEmailTextView.getText().toString());
values.put(PInfoContract.PInfoColumns.PINFO_USERNAME, mUsernameTextView.getText().toString());
values.put(PInfoContract.PInfoColumns.PINFO_PASSWORD, mPasswordTextView.getText().toString());
Uri returned = mContentResolver.insert(PInfoContract.URI_TABLE, values);
Log.d(LOG_TAG, "record id returned is; " + returned);
Intent intent = new Intent(AddActivity.this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
finish(); //always use this when the activity's process is finished
}else {
Toast.makeText(getApplicationContext(), "Please make sure you have inputted valid data.", Toast.LENGTH_LONG).show();
}
}
});
}
private boolean isValid(){ //You can have this as complex as you want. Like checking other databases or number of charas.
if(mWebsiteTextView.getText().toString().length() == 0 ||
mEmailTextView.getText().toString().length() == 0 ||
mUsernameTextView.getText().toString().length() == 0 ||
mPasswordTextView.getText().toString().length() == 0 ){
return false;
}
return true;
}
private boolean someDataEntered(){
if(mWebsiteTextView.getText().toString().length() > 0 ||
mEmailTextView.getText().toString().length() > 0 ||
mUsernameTextView.getText().toString().length() > 0 ||
mPasswordTextView.getText().toString().length() > 0 ){
return true;
}
return false;
}
@Override
public void onBackPressed() {
if(someDataEntered()){
PInfoDialog dialog = new PInfoDialog();
Bundle args = new Bundle();
args.putString(PInfoDialog.DIALOG_TYPE, PInfoDialog.CONFIRM_EXIT); //This method places a text string in the virtual screen at the specified location.
dialog.setArguments(args);
dialog.show(getSupportFragmentManager(), "confirm-exit");
} else{
super.onBackPressed(); //if someDataEntered() is false just do what usually happnes.
}
}
}
}由于您有此异常：
java.lang.IllegalArgumentException: Unknown Uri:
content://com.example.saleh.findmypassword.provider/pinfos at
com.example.saleh.findmypassword.PInfoProvider.insert(PInfoProvider.java:97>)
com.example.saleh.findmypassword.PInfoProvider
BASE\u CONTENT\u URIpublic static final Uri BASE_CONTENT_URI = Uri.parse("content://com.example.saleh.findmypassword.PInfoProvider");
UriMatcherUricom.example.saleh.findmypassword.provider
com.example.saleh.findmypassword.PInfoProvider
public static final Uri BASE_CONTENT_URI = Uri.parse("content://com.example.saleh.findmypassword.PInfoProvider");