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  • android 组件之 alertDialog

    AlertDialog对话框为我们做重要操作时。弹出一个框,做确认信息提示。

    第一。AlertDialog 的对话框提示、内容比较简单。就不解释了、

    package com.test;
    
    import android.app.Activity;
    import android.app.AlertDialog;
    import android.app.AlertDialog.Builder;
    import android.content.DialogInterface;
    import android.content.DialogInterface.OnClickListener;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.TextView;
    
    public class AlertActivity extends Activity {
    	private Button mButton1;
        private TextView testView;
        private ImageView imageView;
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    		mButton1 = (Button) findViewById(R.id.myButton1);
    	
    		final Builder alert =    new AlertDialog.Builder(AlertActivity.this);
    		mButton1.setOnClickListener(new Button.OnClickListener(){
    			@Override
    			public void onClick(View v) {
    				 alert.setIcon(R.drawable.icon);
    				 alert.setTitle(R.string.app_about);
    				 alert.setMessage(R.string.app_about_msg);
    				 alert.setPositiveButton(R.string.str_ok, new OnClickListener() {
    					@Override
    					public void onClick(DialogInterface dialog, int which) {
    						dialog.cancel();
    					}
    				});
    				 alert.show();
    				
    			}
    			
    		});
    	
    		
    	}
    }

    效果图:


    第二:AlertDialog 创建列表对话框。

    package com.test;
    
    import android.app.Activity;
    import android.app.AlertDialog;
    import android.app.AlertDialog.Builder;
    import android.content.DialogInterface;
    import android.content.DialogInterface.OnClickListener;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.TextView;
    
    public class AlertActivity extends Activity {
    	private Button mButton1;
        private TextView testView;
        private ImageView imageView;
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    		mButton1 = (Button) findViewById(R.id.myButton1);
    	 
    		
    		final Builder alert =    new AlertDialog.Builder(AlertActivity.this);
    		mButton1.setOnClickListener(new Button.OnClickListener(){
    			@Override
    			public void onClick(View v) {
    				 alert.setIcon(R.drawable.icon);
    				 alert.setTitle(R.string.app_about);
     
     				 alert.setItems(new String[]{"红色","绿色","蓝色"}, new OnClickListener() {
     					@Override
     					public void onClick(DialogInterface dialog, int which) {
     						System.out.println(which);
     					}
     					
     					 
     				});
    			 
    				 alert.show();
    				
    			}
    			
    		});
    		 
    	}
    }

    效果图:

    第三。使用ALertDialog创建单选列表对话框。

    只要AlertDialog.Builder 调用setSingleChoiceItems 就可以创建一个单选列表的对话框。

    代码如下:

    package com.test;
    
    import android.app.Activity;
    import android.app.AlertDialog;
    import android.app.AlertDialog.Builder;
    import android.content.DialogInterface;
    import android.content.DialogInterface.OnClickListener;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.TextView;
    
    public class AlertActivity extends Activity {
    	private Button mButton1;
        private TextView testView;
        private ImageView imageView;
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.main);
    		mButton1 = (Button) findViewById(R.id.myButton1);
    		testView = (TextView) findViewById(R.id.str_res);
    		imageView = (ImageView)findViewById(R.id.imageView);
    		
    		final Builder alert =    new AlertDialog.Builder(AlertActivity.this);
    		mButton1.setOnClickListener(new Button.OnClickListener(){
    			@Override
    			public void onClick(View v) {
    				 alert.setIcon(R.drawable.icon);
    				 alert.setTitle(R.string.app_about);
     
    				 alert.setSingleChoiceItems(new String[]{"红色","绿色","蓝色"}, 1, new OnClickListener() {
    					
    					@Override
    					public void onClick(DialogInterface dialog, int which) {
    						System.out.println(which);
    					}
    				});
    				 alert.setPositiveButton("确定", null);
     
    				 alert.show();
    				
    			}
    			
    		});
    		 
    		
    	}
    }

    效果图:


    如果想给某个AlertDialog 只添加额外的页面。

    TableLayout layout =(TableLayout)getLayoutInflater().inflate(R.layout.login_user_activity,null);
    dialog.setView(layout);
    效果图:




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  • 原文地址:https://www.cnblogs.com/java20130726/p/3218346.html
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