android AlertDialog的簡單使用實例

2019-12-12 03:59:31

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當你的應用需要顯示一個進度條或需要用戶對信息進行確認時，可以使用alertDialog來完成。下面來介紹常用的四種AlertDialog。

1、普通對話框

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普通對話框  */ 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")//設置title         .setMessage("操作message")//設置要顯示的message         .setCancelable(false)//表示點擊dialog其它部分不能取消(除了“取消”，“確定”按鈕)         .setPositiveButton("確定", new             DialogInterface.OnClickListener() {       @Override       public void onClick(DialogInterface dialogInterface, int i) {         Toast.makeText(GeneralDialogActivity.this, "點擊了確定", Toast.LENGTH_SHORT).show();        }     }).setNegativeButton("取消", new DialogInterface.OnClickListener() {       @Override       public void onClick(DialogInterface dialogInterface, int i) { //        dialogInterface.dismiss();       }     });     alertDialog.show();//別忘了show   } }

2、單選對話框

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;  /**  * 單選對話框  */ 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")//在需要設置單選對話框的情況下是不能設置message的，否則單選對話框內容會失效         .setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {//checkedItem=-1表示默認不選中           @Override           public void onClick(DialogInterface dialogInterface, int i) {             Toast.makeText(SingleDialogActivity.this, "選中了"+items[i], Toast.LENGTH_SHORT).show();           }         }).setPositiveButton("確定", new DialogInterface.OnClickListener() {           @Override           public void onClick(DialogInterface dialogInterface, int i) {            }         });       alertDialog.show();   } }

3、多選對話框

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;  /**  * 多選對話框  */ 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, "選中了"+items[i], Toast.LENGTH_SHORT)                   .show();             }            }         })         .setPositiveButton("確定", new DialogInterface.OnClickListener() {           @Override           public void onClick(DialogInterface dialogInterface, int i) {            }         });     alertDialog.show();   } }

4、進度條對話框

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;  /**  * 進度條對話框  */ 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);//旋轉進度條，默認風格     progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//橫向進度條     progressDialog.show();    } }