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;@Overridepublic 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(){@Overridepublic 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() {@Overridepublic 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;@Overridepublic 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(){@Overridepublic 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;@Overridepublic 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(){@Overridepublic 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() {@Overridepublic 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：