1. Simple Getting Started Dialog
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Normal dialog 1"
android:onClick="onClick"
/>
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="normal dialog 2"
android:onClick="onClick"
/>
</LinearLayout>
MainActivity.java
package com.administrator.dialogtest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = findViewById(R.id.btn1);
Button btn2 = findViewById(R.id.btn2);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
showNormalDialog ();
break;
case R.id.btn2:
showNormalDialog2 ();
}
}
private void showNormalDialog2() {
AlertDialog dialog = new AlertDialog.Builder(this).create();
dialog.setTitle("Prompt");//This is a method with no return value, so you can't keep .set like the first button
dialog.setMessage("Please rate this class");
//5 3 1
dialog.setButton(DialogInterface.BUTTON_POSITIVE, "1分", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"You selected: 5 points",Toast.LENGTH_SHORT).show();
}
});
dialog.setButton(DialogInterface.BUTTON_NEUTRAL, "5 points", new DialogInterface.OnClickListener() {//This cannot pass null, because null does not know whether it is an empty Message object or an empty OnClickListener object
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "3分", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
//Be sure to call the show method, otherwise the dialog box will not be displayed
dialog.show();
}
private void showNormalDialog() {
//AlertDialog
//AlerDialog's constructor is modified as protected
//So it is not accessible outside the package, so we use the constructor
// AlertDialog dialog = new AlertDialog(this);//Because the method is defined as protected, use the constructor
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// builder.setTitle("Title").setMessage("Hello").setPositiveButton()//Because the return value of each method is a builder, it can be written like this
//set the title of the dialog
builder.setTitle("提示");
//set content
builder.setMessage("Are you sure to exit the current program");
//set button
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Exit the current program
MainActivity.this.finish();
}
});
builder.setNegativeButton("Cancel",null);//The click event can be passed like the OK button above, nothing is null
// builder.setNeutralButton();
//create dialog
// builder.create();
//Display method of dialog
builder.show();//The create() method is written in the show() method, so there is no need to write it again
}
}
Second, the list dialog box and the radio dialog box
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="list dialog"
android:onClick="onClick"
/>
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="radio dialog"
android:onClick="onClick"
/>
</LinearLayout>
MainActivity.java
package com.administrator.dialogtest;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = findViewById(R.id.btn1);
Button btn2 = findViewById(R.id.btn2);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
showListDialog ();
break;
case R.id.btn2:
showSingleDialog();
}
}
/**
* radio dialog
*/
// int idx = 0;
private void showSingleDialog() {
final String[] stars={"Lao Zhou","Lao Niu","Lao Sun","Lao","I can't write anymore"};
AlertDialog.Builder builder = new AlertDialog.Builder(this)
.setTitle("Please select your favorite star")
//parameter 1: options
//Parameter 2: default option, pass the index of an option
//parameter 3: event when selected
.setSingleChoiceItems(stars, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// idx = which;
Toast.makeText(MainActivity.this,"Your favorite star is:"+ stars[which],Toast.LENGTH_SHORT).show();
}
// }).setPositiveButton("OK",null);//If you need to click a button to disappear, set it like this
// }).setPositiveButton("确定", new DialogInterface.OnClickListener() {
// @Override
// public void onClick(DialogInterface dialog, int which) {//Which is not the same as the above, so to solve the problem passed down above, define a global variable
// Toast.makeText(MainActivity.this, "You selected:" + stars[idx], Toast.LENGTH_SHORT).show();
// }
// });
});
builder.show();
}
/**
* List dialog
*/
private void showListDialog() {
final String[] items = {"I am 1","I am 2","I am 3","I am 4"};
AlertDialog.Builder builder = new AlertDialog.Builder(this)
.setTitle("Please select:")
//set list item
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {//Parameter 2: The index of the clicked item
Toast.makeText(MainActivity.this, "You selected:" + items[which], Toast.LENGTH_SHORT).show();
}
});
builder.show();
}
}
3. Multiple selection dialog and waiting dialog
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Multiple selection dialog"
android:onClick="onClick"
/>
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="wait for dialog"
android:onClick="onClick"
/>
</LinearLayout>
MainActivity.java
package com.administrator.dialogtest;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = findViewById(R.id.btn1);
Button btn2 = findViewById(R.id.btn2);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
showMultiDialog();
break;
case R.id.btn2:
showWaitingDialog();
}
}
/**
* Multiple selection dialog
*/
private void showMultiDialog() {
final String[] sports = {"basketball","tennis","table tennis","hockey","skateboard","swimming"};
final boolean[] checked = {true,false,true,true,false,false};
AlertDialog.Builder builder =new AlertDialog.Builder(this)
.setTitle("your favorite sport")
//parameter 1: options
//Parameter 2: Default option (true: selected, false: not selected)
//parameter 3: the event that is triggered when it is selected
.setMultiChoiceItems(sports,checked , new DialogInterface.OnMultiChoiceClickListener() {
@Override
//parameter 1: the dialog itself
//parameter 2: the index of the button
//Parameter 3: Whether the flag button is selected true (checked) false (unchecked)
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
// Whether it is selected or deselected, the onclick method will be triggered
//According to the which array subscript, save the selected state of isChecked to the array checked
// checked[which]=isChecked;//This method does this step by default. So no need to write
Log.e("Log", sports[which]);
}
}).setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String msg="Your hobby is: ";
for (int i = 0;i<checked.length;i++){
if(checked[i]){
msg += sports[i] + " ";//traverse the array of selected states just saved above
}
}
Toast.makeText(MainActivity.this,msg,Toast.LENGTH_SHORT).show();
}
});
// });
builder.show();
}
/**
* wait for dialog
*/
private void showWaitingDialog() {
//Progress dialog, the default style is to circle
ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("I am a waiting dialog");
dialog.setMessage("Please wait...");
// dialog.setCancelable(false);//Set whether to cancel, the default is true to cancel
// dialog.dismiss();//Set the dialog to disappear
dialog.show();
}
}
Fourth, the progress bar dialog box and input dialog box
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="progress bar dialog"
android:onClick="onClick"
/>
<Button
android:id="@+id/btn2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="input dialog"
android:onClick="onClick"
/>
</LinearLayout>
MainActivity.java
package com.administrator.dialogtest;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button btn1;
private Button btn2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = findViewById(R.id.btn1);
Button btn2 = findViewById(R.id.btn2);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
showProgressDialog();
break;
case R.id.btn2:
showInputDialog();
}
}
/**
* Progress bar dialog
*/
private void showProgressDialog() {
final ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("Downloading...");
dialog.setMessage("Please wait");
dialog.setIndeterminate(false);//Set the progress bar to be blurred, feel that the progress bar is moving, true is circular movement
//Set the style of the dialog to horizontal style
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
// dialog.setProgress(40);//Set progress
new Thread(){
public void run(){
super.run();
// Let the progress bar move from 1 to 100
for(int i =1;i<=100;i++){
dialog.setProgress(i);
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace ();
}
}
dialog.dismiss();
}
}.start();
dialog.show();
}
/**
* input dialog
*/
private void showInputDialog() {
final EditText editText = new EditText(this);
AlertDialog.Builder builder = new AlertDialog.Builder(this)
.setTitle("Title")
.setView(editText)//You need to pass a layout or a View view, or you can create a new layout in the resource folder and import it
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"What you entered is:"+editText.getText().toString(),Toast.LENGTH_SHORT).show();
}
});
builder.show();
}
}