Dialog练习

• 1、项目层级
• 2、代码
• • • （1）styles.xml：给Dialog设置一个风格主题（基本都是用这个主题）无边框全透明背景
    • （2）activity_main.xml
    • （3）mydialog.xml：给自定的Dialog设置自定义的 xml界面
    • （4）MainActivity
    • （5）MyDialog：继承Dialog实现自定义的Dialog
• 3、效果图

package com.zz.dialogtest2;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button button1 = (Button) findViewById(R.id.button_1);
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "onClick: button1");
                Toast.makeText(MainActivity.this,"You click button1", Toast.LENGTH_LONG).show();

            }
        });

        Button button2 = (Button) findViewById(R.id.button_2);
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "onClick: button2");
                Toast.makeText(MainActivity.this,"You click button2", Toast.LENGTH_LONG).show();
            }
        });

        MyDialog myDialog = new MyDialog(MainActivity.this);
//        //设置点击屏幕或返回键，dialog都不消失
//        myDialog.setCancelable(false);
//        //设置点击屏幕dialog不消失,点击返回键dialog消失
        myDialog.setCanceledonTouchOutside(false);
//        Window window = myDialog.getWindow();
//        //设置对话框位置
//        window.setGravity(Gravity.CENTER);
//        myDialog.show();
//        //设置对话框的宽度和高度，一定要在show()方法之后使用，否则无效
//        window.setLayout(500,300);

        myDialog.setCancelable(false);
        Window window = myDialog.getWindow();
        window.setGravity(Gravity.CENTER);
        //设置Dialog不接受Touch事件
        window.setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
        myDialog.show();

    }

    @Override
    public boolean dispatchKeyEvent(KeyEvent event) {
        Log.d(TAG, "dispatchKeyEvent: mainactivity");
        return super.dispatchKeyEvent(event);
    }
}

package com.zz.dialogtest2;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.StyleRes;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.Toast;



public class MyDialog extends Dialog {
    private static final String TAG = "MyDialog";

    public MyDialog(@NonNull Context context) {
        super(context,R.style.MyDialog);
    }

    public MyDialog(@NonNull Context context, @StyleRes int themeResId) {
        super(context, themeResId);
    }

    protected MyDialog(@NonNull Context context, boolean cancelable, @Nullable OnCancelListener cancelListener) {
        super(context, cancelable, cancelListener);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mydialog);
    }

    @Override
    public boolean dispatchKeyEvent(@NonNull KeyEvent event) {
        Log.d(TAG, "dispatchKeyEvent: mydialog");
        return false;
    }
}