AlertDialog提示框可添加确定取消等多种选择

最新推荐文章于 2022-03-22 11:44:39 发布

原创最新推荐文章于 2022-03-22 11:44:39 发布 · 615 阅读

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本文详细介绍了在Android应用中如何使用AlertDialog创建对话框。包括基于布局的AlertDialog实现方式及基本AlertDialog的展示方法。通过示例代码展示了如何设置标题、按钮及其点击事件。

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alertdialog_act.xml文件

alertdialog.xml文件

AlertDialog_Act.java文件

/**
        <activity android:name="com.AlertDialog.AlertDialog_Act" android:label="@string/app_name">
		    <intent-filter>
		        <action android:name="android.intent.action.MAIN">
		        <category android:name="android.intent.category.LAUNCHER">
		    </category></action></intent-filter>
		</activity>
 */

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class AlertDialog_Act extends Activity {

private final static String TAG="AlertDialog_Act";
	private Button alertDialog_btn1;
	private Button alertDialog_btn2;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		
		setContentView(R.layout.alertdialog_act);
		alertDialog_btn1 = (Button)findViewById(R.id.alertDialog_btn1);
		alertDialog_btn2 = (Button)findViewById(R.id.alertDialog_btn2);
	}
	
	public void alertDialog_ClickBtn(View view){
		if(view.equals(alertDialog_btn1)){
			showDialog_Layout();
		}else if(view.equals(alertDialog_btn2)){
			showDialog();
		}
		
	}

//显示基于Layout的AlertDialog  
    private void showDialog_Layout() {  
        LayoutInflater inflater = LayoutInflater.from(AlertDialog_Act.this);  
        final View textEntryView = inflater.inflate(  
                R.layout.alertdialog, null);  
        final EditText edtInput=(EditText)textEntryView.findViewById(R.id.edtInput);  
        final AlertDialog.Builder builder = new AlertDialog.Builder(AlertDialog_Act.this);  
        builder.setCancelable(false);  
//        builder.setIcon(R.drawable.icon);  
        builder.setTitle("Title");  
        builder.setView(textEntryView);  
        builder.setPositiveButton("确认",  
                new DialogInterface.OnClickListener() {  
                    public void onClick(DialogInterface dialog, int whichButton) {  
                        setTitle(edtInput.getText());  
                        Log.i(TAG, "input="+edtInput.getText());
                    }  
                });  
        builder.setNegativeButton("取消",  
                new DialogInterface.OnClickListener() {  
                    public void onClick(DialogInterface dialog, int whichButton) {  
                        setTitle("no input");  
                        Log.i(TAG, "input=null");
                    }  
                });  
        builder.show();  
    } 
    
    private void showDialog() {  
    	AlertDialog.Builder adb = new AlertDialog.Builder(AlertDialog_Act.this);
		adb.setTitle("退出");
		adb.setMessage("是否退出软件？");
		adb.setPositiveButton("是", new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				AlertDialog_Act.this.finish();
			}
		});
		adb.setNeutralButton("中立", new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				//do nothing
			}
		});
		adb.setNegativeButton("否", new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// TODO Auto-generated method stub
				//not exit
			}
		});
		adb.show();
    }
}