21. Use of AlertDialog Common Dialog

Target Effect

In this interface, there is a text input box and a button, enter content in the text input box, then click the button to bring up a customized normal dialog box, in which the prompt information is the information entered in the text box.
The target effect map is as follows:



Page Layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity"
    android:background="@drawable/dog4" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="19dp"
        android:layout_marginLeft="10dp"
        android:text="Please enter the content of the prompt box!"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <EditText
        android:id="@+id/write"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="10dp"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/show"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Show the contents of the dialog" />



</LinearLayout>

Customize Dialog Style

package com.example.alertdialogdemo;

import org.w3c.dom.Text;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.webkit.WebView.FindListener;
import android.widget.TextView;

/*
 * Common Dialog Class
 * Style: A dialog box with a normal button
 */
@SuppressLint({ "ValidFragment", "NewApi" }) 
public class MyDialogFragment extends DialogFragment
{
    String showDialog=null;

    public MyDialogFragment(String message) 
    {
        showDialog=message;
    }

    @SuppressLint("NewApi") @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) 
    {
        Dialog dialog=null;

        android.app.AlertDialog.Builder b=new AlertDialog.Builder(getActivity());
        b.setIcon(R.drawable.ic_launcher);
        b.setTitle("I am a custom normal dialog");
        b.setMessage(showDialog);

        //Set buttons and add action monitoring for buttons
        b.setPositiveButton("Determine", new OnClickListener()
        {
            @Override
            public void onClick(DialogInterface arg0, int arg1)
            {

            }
        });

        dialog=b.create();
        return dialog;
    }

}

Main Function Event Response

package com.example.alertdialogdemo;

import android.os.Build;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

@SuppressLint("NewApi")
public class MainActivity extends Activity
{
    EditText write=null;
    Button show=null;
    final int COMMON_DIALOG=1;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        write=(EditText) findViewById(R.id.write);
        show=(Button) findViewById(R.id.show);

        //Set up listeners for buttons
        show.setOnClickListener(new View.OnClickListener()
        {

            @Override
            public void onClick(View arg0) 
            {
                //Call the created method to display the contents of the write
                String message=write.getText().toString();
                showDialog(message);
            }

            //Create a normal dialog box with the OK button
            @SuppressLint
            ("NewApi") private void showDialog(String message)
            {
                MyDialogFragment myDialog=new MyDialogFragment(message);
                myDialog.show(getFragmentManager(), "warning");
            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

Tags: Android

Posted on Sat, 04 Jul 2020 11:25:37 -0400 by mullz