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();
}
}
