Support for changing passwords

src/i2p/bote/SetPasswordActivity.java

@@ -0,0 +1,76 @@
+package i2p.bote;
+
+import android.app.ProgressDialog;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v7.app.ActionBarActivity;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+
+public class SetPasswordActivity extends ActionBarActivity {
+    TextView error;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_set_password);
+
+        // Enable ActionBar app icon to behave as action to go back
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        final EditText oldField = (EditText) findViewById(R.id.password_old);
+        final EditText newField = (EditText) findViewById(R.id.password_new);
+        final EditText confirmField = (EditText) findViewById(R.id.password_confirm);
+        final Button b = (Button) findViewById(R.id.submit_password);
+        error = (TextView) findViewById(R.id.error);
+
+        b.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String oldPassword = oldField.getText().toString();
+                String newPassword = newField.getText().toString();
+                String confirmNewPassword = confirmField.getText().toString();
+
+                I2PBote.getInstance().changePasswordAsync(
+                        oldPassword.getBytes(),
+                        newPassword.getBytes(),
+                        confirmNewPassword.getBytes());
+
+                new PasswordWaiter().execute();
+            }
+        });
+    }
+
+    private class PasswordWaiter extends AsyncTask<Void, Void, String> {
+        private final ProgressDialog dialog = new ProgressDialog(SetPasswordActivity.this);
+
+        protected void onPreExecute() {
+            dialog.setMessage("Changing password...");
+            dialog.setCancelable(false);
+            dialog.show();
+        }
+
+        protected String doInBackground(Void... params) {
+            try {
+                I2PBote.getInstance().waitForPasswordChange();
+                return null;
+            } catch (Throwable e) {
+                cancel(false);
+                return e.getMessage();
+            }
+        }
+
+        protected void onCancelled(String result) {
+            error.setText(result);
+            dialog.dismiss();
+        }
+
+        protected void onPostExecute(String result) {
+            dialog.dismiss();
+            // Password changed successfully
+            finish();
+        }
+    }
+}