当你的应用需要显示一个进度条或需要用户对信息进行确认时，可以使用alertDialog来完成。下面来介绍常用的四种AlertDialog。

1、普通对话框

package com.example.yk.dialogtest; import android.content.DialogInterface; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Toast; /** * AlertDialog普通对话框 */ public class GeneralDialogActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_general_dialog); AlertDialog.Builder alertDialog = new AlertDialog.Builder(this) .setTitle("操作title")//设置title .setMessage("操作message")//设置要显示的message .setCancelable(false)//表示点击dialog其它部分不能取消(除了“取消”，“确定”按钮) .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Toast.makeText(GeneralDialogActivity.this, "点击了确定", Toast.LENGTH_SHORT).show(); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { // dialogInterface.dismiss(); } }); alertDialog.show();//别忘了show } }

2、单选对话框

package com.example.yk.dialogtest; import android.content.DialogInterface; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Toast; /** * 单选对话框 */ public class SingleDialogActivity extends AppCompatActivity { private String[] items={"java","php","c"}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_single_dialog); AlertDialog.Builder alertDialog = new AlertDialog.Builder(this) .setTitle("提示title") // .setMessage("提示message")//在需要设置单选对话框的情况下是不能设置message的，否则单选对话框内容会失效 .setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {//checkedItem=-1表示默认不选中 @Override public void onClick(DialogInterface dialogInterface, int i) { Toast.makeText(SingleDialogActivity.this, "选中了"+items[i], Toast.LENGTH_SHORT).show(); } }).setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); alertDialog.show(); } }

3、多选对话框

package com.example.yk.dialogtest; import android.content.DialogInterface; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Toast; /** * 多选对话框 */ public class MultiChoiceDialogActivity extends AppCompatActivity { private String[] items={"java","php","c"}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_multi_choice_dialog); AlertDialog.Builder alertDialog = new AlertDialog.Builder(this) .setTitle("提示title") .setCancelable(false) .setMultiChoiceItems(items, new boolean[]{false, false, false}, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i, boolean b) { if(b){ Toast.makeText(MultiChoiceDialogActivity.this, "选中了"+items[i], Toast.LENGTH_SHORT) .show(); } } }) .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); alertDialog.show(); } }

4、进度条对话框

package com.example.yk.dialogtest; import android.app.ProgressDialog; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; /** * 进度条对话框 */ public class ProgressDialogActivity extends AppCompatActivity { private ProgressDialog progressDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_progress_dialog); progressDialog = new ProgressDialog(this); progressDialog.setTitle("提示title"); progressDialog.setCancelable(true); // progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//旋转进度条，默认风格 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//横向进度条 progressDialog.show(); } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。