Android的各种通知Notification、Dialog、Toast、Snackbar

package com.example.dell.myapplication; import android.app.Notification; import android.app.NotificationManager; import android.content.Context; import android.content.DialogInterface; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.support.design.widget.Snackbar; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.app.NotificationCompat; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import java.io.File; public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button insert; private Button update; private Button delete; private Button delete1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); insert = (Button) findViewById(R.id.insert); update = (Button) findViewById(R.id.update); delete = (Button) findViewById(R.id.delete); delete1 = (Button) findViewById(R.id.delete1); insert.setOnClickListener(this); update.setOnClickListener(this); delete.setOnClickListener(this); delete1.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.insert: showNotification(); break; case R.id.update: showToast("先生您好"); break; case R.id.delete: showDialog(); break; case R.id.delete1: showSnackbar(); break; } } public void showNotification() { //通过Notification.Builder 创建一个notification NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext()); //第一次收到通知时，在通知栏显示的内容 builder.setTicker("中奖通知"); //用户点击后自动消失 builder.setAutoCancel(true); //在通知栏显示的标题 builder.setContentTitle("恭喜你中奖了"); //在通知栏显示的内容 builder.setContentText("你的号码被我公司抽中，中奖100万，请及时联络：139999"); //设置小图标，必须设置，否则通知无法显示 builder.setSmallIcon(R.mipmap.ic_launcher); //设置用户无法去掉通知，只能通过代码根据id号去掉 //builder.setOngoing(true); //设置静止和振动的数组，单位是毫秒，静止，振动，静止，振动··· builder.setVibrate(new long[]{0, 500, 500, 500}); //设置提示LED灯，颜色，亮起的时长，熄灭的市场 builder.setLights(Color.BLUE, 200, 200); //设置通知的声音，要根据自己的音频位置 builder.setSound(Uri.fromFile(new File("/system/media/audio/ui/usb_effect.ogg"))); //设置默认的通知铃声、振动、LED灯 //builder.setDefaults(NotificationCompat.DEFAULT_ALL); //设置优先级 builder.setPriority(NotificationCompat.PRIORITY_MAX); Notification notification = builder.build(); NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); //第一个参数是用于取消通知的id号 manager.notify(1, notification); } public void showDialog() { AlertDialog.Builder builder = new AlertDialog.Builder(this); //设置标题 builder.setTitle("通知"); //设置对话框内容 // builder.setMessage("这有个重要的通知要您处理"); //设置图标 builder.setIcon(android.R.drawable.ic_dialog_alert); //设置是否可以点击屏幕其他地方或者返回键取消显示 builder.setCancelable(true); //添加一个自定义布局，比如一个布局里一个输入框 View view = View.inflate(this, R.layout.item, null); builder.setView(view); //右边按钮 builder.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //该按钮的点击事件 } }); //左边按钮 builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //该按钮的点击事件 } }); //单选列表 /*final String[] singleChoiceItems = new String[]{"Android", "Java", "PHP"}; builder.setSingleChoiceItems(singleChoiceItems, 1, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(getApplicationContext(),"您选择了"+singleChoiceItems[which],Toast.LENGTH_SHORT).show(); dialog.dismiss(); } });*/ //复选列表 /*final String[] multiChoiceItems = new String[]{"Android", "Java", "PHP"}; builder.setMultiChoiceItems(multiChoiceItems, new boolean[]{false, true, true}, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { String ruselt = isChecked ? "已选择" : "未选择"; ruselt = multiChoiceItems[which] +ruselt; Toast.makeText(getApplicationContext(),ruselt,Toast.LENGTH_SHORT).show(); } });*/ //很多朋友都会忘了show builder.show(); } private Toast toast; public void showToast(String content) { //判断是否为空，避免生成多个Toast if (toast == null) { toast = Toast.makeText(this, content, Toast.LENGTH_SHORT); } else { toast.setText(content); } toast.show(); } public void showSnackbar() { //第一个参数是随便找当前布局的id就行了 Snackbar snackbar = Snackbar.make(findViewById(R.id.activity_main), "这个操作不重要", Snackbar.LENGTH_LONG); //设置按钮 snackbar.setAction("好的", new View.OnClickListener() { @Override public void onClick(View v) { //按钮单击事件 } }); //显示该提示 snackbar.show(); } }