Android Dialog AlertDialog

1、普通的对话框

　　

　　　　

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical" >

    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

public class MyDialog extends Dialog{

    //必须要给构造方法
    public MyDialog(Context context) {
        //也可以在构建Dialog对象的时候就给指定Dialog样式
        //使用主题来修改Dialog样式，在res/values/styles.xml中添加自定义主题
        super(context,R.style.DialogTheme);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //这个可以不要标题。通过getWindow().requestFeature(featureId)方法
        //getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.dialog_progress);
    }
    
    /**
     * 一个Activity或者一个Dialog刚刚出现在用户面前的时候，焦点改变调用onWindowFocusChanged
     */
    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
    }
}

// 普通对话框
    public void dialog1(View v) {
        MyDialog dialog = new MyDialog(this);
        dialog.setTitle("这是进度Dialog");
        // 显示对话框
        dialog.show();

        // 关闭对话框用
        // dialog.dismiss();
    }

2、警告对话框AlertDialog setMessage

 

//AlertDialog  setMessage
    public void dialog2(View v) {
        AlertDialog.Builder dialog = new AlertDialog.Builder(this);
        dialog.setTitle("警告！").setIcon(R.drawable.ic_launcher)
                .setMessage("前方高能")
                // 注意这个导的包是import android.content.DialogInterface.OnClickListener;
                .setPositiveButton("OK", new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(MainActivity.this, "您选择了OK",
                                Toast.LENGTH_SHORT).show();

                    }
                })
                .setNegativeButton("Cancel", new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(MainActivity.this, "您选择了Cancel",
                                Toast.LENGTH_SHORT).show();
                    }
                })
                .setNeutralButton("Ignore", new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(MainActivity.this, "您选择了Ignore",
                                Toast.LENGTH_SHORT).show();
                    }
                })
                .create().show();
    }

3、菜单对话框AlertDialog setItem 

//菜单选择，  setItem 如果设置setMessage，那么只会显示Message
    String[] setting = {"声音","存储","显示","应用","语言和输入法","流量使用情况","WLAN"};
    public void dialog3(View v){
        new AlertDialog.Builder(this)
        .setTitle("设置")
        .setIcon(R.drawable.setting)
        //which代表第几项，item点击后自动关闭，不需要Button
        .setItems(setting, new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, setting[which], Toast.LENGTH_SHORT).show();
            }
        })
        .create().show();
    }

4、单选对话框AlertDialog setSingleChoiceItems

//单选对话框，setItem
    String[] hobby = {"唱歌","跑步","武术","乒乓球","敲代码"};
    int choice = 0;
    public void dialog4(View v){
        new AlertDialog.Builder(this)
        .setTitle("爱好单选")
        .setIcon(R.drawable.hobby)
        //0代表默认选中第一个,选中不会自动关闭
        .setSingleChoiceItems(hobby, 0, new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                choice = which;
            }
        })
        //Button上的which永远为0，所以这里需要一个变量来保存选中的ItemID
        .setPositiveButton("ok", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, hobby[choice], Toast.LENGTH_SHORT).show();
            }
        })
        .setNegativeButton("cancel",null)
        .create().show();
    }

5、多选对话框AlertDialog setMultiChoiceItem

String[] hobby = {"唱歌","跑步","武术","乒乓球","敲代码"};
    boolean[] bool = {false,false,false,false,false};
    List<String> list = new ArrayList<String>();
    public void dialog5(View v){
        new AlertDialog.Builder(this)
        .setTitle("爱好可多选")
        .setIcon(R.drawable.hobby)
        //默认选中了哪些，点击也不会自动关闭
        .setMultiChoiceItems(hobby, bool, new OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                if(isChecked){
                    list.add(hobby[which]);
                }else{
                    list.remove(hobby[which]);
                }
            }
        })
        .setPositiveButton("ok", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                
                Toast.makeText(MainActivity.this, list.toString(), Toast.LENGTH_SHORT).show();
                
            }
        }).create().show();
    }

6、适配器对话框AlertDialog setAdapter

 

public void dialog6(View v){
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, hobby);
        new AlertDialog.Builder(this)
        .setTitle("适配器对话框")
        //和setItem一样，选中之后对话框就自动消失，不需要Button
        .setAdapter(adapter, new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, hobby[which], Toast.LENGTH_SHORT).show();
                
            }
        }).create().show();
    }

 7、自定义对话框AlertDialog setView

自定义对话框AlertDialog setView

8、关闭对话框AlertDialog dismisson

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"/>
    
    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="关闭对话框请点击关闭按钮"/>
    
    <TextView
        android:id="@+id/finish"
        android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="关闭"/>

</LinearLayout>

public void dialog8(View v){
        View layout = getLayoutInflater().inflate(R.layout.dialog_dismiss, null);
        TextView finish = (TextView) layout.findViewById(R.id.finish);
        final AlertDialog dialog = new AlertDialog.Builder(MainActivity.this)
        .setTitle("可关闭的对话框")
        .setView(layout)
        .create();
        dialog.show();
        finish.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        
        
        //有时候用户可能点到了外部，dialog就直接关闭了，而程序不知道，这时候就需要设置
        dialog.setCancelable(false);
        dialog.setOnDismissListener(new OnDismissListener() {
            @Override
            public void onDismiss(DialogInterface dialog) {
                Toast.makeText(MainActivity.this, "关闭", Toast.LENGTH_SHORT).show();
                
            }
        });
    }