refs #2 AlertDialog Style

Author: silicon ruby

AlertDialogActivity.java

@@ -0,0 +1,102 @@
+package com.example.alertdialogtest;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Menu;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.Toast;
+
+public class AlertDialogActivity extends Activity {
+
+	private Button createDialog;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.main);
+
+		createDialog = (Button) findViewById(R.id.dialog);
+		createDialog.setOnClickListener(new OnClickListener() {
+
+			@Override
+			public void onClick(View v) {
+				final EditText editText = new EditText(AlertDialogActivity.this);
+				LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
+						LinearLayout.LayoutParams.MATCH_PARENT,
+						LinearLayout.LayoutParams.MATCH_PARENT);
+				editText.setLayoutParams(lp);
+				AlertDialog.Builder builder = new AlertDialog.Builder(
+						AlertDialogActivity.this);
+				builder.setTitle(R.string.dialogTitle).setView(editText);
+				builder.setPositiveButton(R.string.ok,
+						new DialogInterface.OnClickListener() {
+
+							@Override
+							public void onClick(DialogInterface dialog,
+									int which) {
+								Toast.makeText(AlertDialogActivity.this,
+										editText.getText().toString(),
+										Toast.LENGTH_SHORT).show();
+							}
+						});
+				builder.setNegativeButton(R.string.cancel,
+						new DialogInterface.OnClickListener() {
+
+							@Override
+							public void onClick(DialogInterface dialog,
+									int which) {
+							}
+						});
+				final AlertDialog dialog = builder.create();
+
+				editText.addTextChangedListener(new TextWatcher() {
+
+					@Override
+					public void onTextChanged(CharSequence s, int start,
+							int before, int count) {
+						if (editText == null
+								|| editText.getText().toString().trim()
+										.equals("")) {
+							dialog.getButton(AlertDialog.BUTTON_POSITIVE)
+									.setEnabled(false);
+						} else {
+							dialog.getButton(AlertDialog.BUTTON_POSITIVE)
+									.setEnabled(true);
+						}
+					}
+
+					@Override
+					public void beforeTextChanged(CharSequence s, int start,
+							int count, int after) {
+
+					}
+
+					@Override
+					public void afterTextChanged(Editable s) {
+
+					}
+				});
+
+				dialog.show();
+				// must use (dialog.getButto() to get the button not reference)
+				dialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
+			}
+		});
+	}
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		// Inflate the menu; this adds items to the action bar if it is present.
+		getMenuInflater().inflate(R.menu.alert_dialog, menu);
+		return true;
+	}
+
+}