1.普通通知
private void fun1() {
Notification.Builder builder = new Notification.Builder(MainActivity.this);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setContentTitle("我是标题");
builder.setContentText("我是内容");
builder.setAutoCancel(true);
builder.setPriority(Notification.PRIORITY_MAX);
builder.setDefaults(Notification.DEFAULT_ALL);
Intent intent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 100, intent, 0);
builder.setContentIntent(pendingIntent);
Notification build = builder.build();
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(1, build);
}
});
}
下载通知
private void fun2() {
final Notification.Builder builder = new Notification.Builder(MainActivity.this);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setContentTitle("下载");
Intent intent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 100, intent, 0);
builder.setContentIntent(pendingIntent);
final Notification build = builder.build();
final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
final Timer timer = new Timer();
timer.schedule(new TimerTask() {
int progress = 0;
@Override
public void run() {
builder.setContentText("正在下载中:" + progress + "%");
builder.setProgress(100, progress, false);
progress++;
if (progress >= 100){
builder.setContentText("下载完成,正在安装...");
builder.setProgress(100,progress,true);
timer.cancel();
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
manager.cancel(1);
}
manager.notify(1, build);
}
}, 1000, 100);
manager.notify(1, build);
}
分组通知
private void fun3() {
Notification.Builder builder1 = new Notification.Builder(MainActivity.this);
Notification.Builder builder2 = new Notification.Builder(MainActivity.this);
Notification.Builder builder3 = new Notification.Builder(MainActivity.this);
Notification.Builder builder4 = new Notification.Builder(MainActivity.this);
builder1.setGroup("2");
builder1.setContentTitle("111111111");
builder1.setContentText("11111111111");
builder1.setSmallIcon(R.mipmap.ic_launcher);
builder2.setGroup("2");
builder2.setContentTitle("111111111");
builder2.setContentText("11111111111");
builder2.setSmallIcon(R.mipmap.ic_launcher);
builder3.setGroup("2");
builder3.setContentTitle("111111111");
builder3.setContentText("11111111111");
builder3.setSmallIcon(R.mipmap.ic_launcher);
builder4.setGroup("2");
builder4.setContentTitle("111111111");
builder4.setContentText("11111111111");
builder4.setSmallIcon(R.mipmap.ic_launcher);
Notification build1 = builder1.build();
Notification build2 = builder2.build();
Notification build3 = builder3.build();
Notification build4 = builder4.build();
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(1,build1);
manager.notify(2,build2);
manager.notify(3,build3);
manager.notify(4,build4);
}
动态添加通知
private void fun4() {
Notification.Builder builder = new Notification.Builder(MainActivity.this);
builder.setSmallIcon(R.mipmap.ic_launcher);
RemoteViews remoteViews = new RemoteViews(getPackageName(),R.layout.sustom_layout);
remoteViews.setTextViewText(R.id.tv,"play");
builder.setCustomContentView(remoteViews);
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(1,builder.build());
}
列表通知和大图通知
private void fun5() {
Notification.Builder builder = new Notification.Builder(MainActivity.this);
builder.setSmallIcon(R.mipmap.ic_launcher);
builder.setContentTitle("大图通知");
builder.setAutoCancel(true);
builder.setPriority(Notification.PRIORITY_MAX);
builder.setDefaults(Notification.DEFAULT_ALL);
Intent intent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 100, intent, 0);
builder.setContentIntent(pendingIntent);
Notification.BigPictureStyle bigPictureStyle = new Notification.BigPictureStyle();
Notification.BigPictureStyle bigPictureStyle1 = bigPictureStyle.bigPicture(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));
builder.setStyle(bigPictureStyle1);
Notification build = builder.build();
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(1, build);
}
双击返回
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (System.currentTimeMillis() - time > 2000) {
Toast.makeText(this, "再按一次退出", Toast.LENGTH_SHORT).show();
time = System.currentTimeMillis();
return false;
} else {
this.finish();
}
}
return super.onKeyDown(keyCode, event);
}
作业
1.
package com.example.practice0929;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.PopupWindow;
public class MainActivity extends AppCompatActivity {
private Button button1;
private Button buttonA;
private Button buttonB;
private Button buttonC;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog_layout, null);
builder.setView(inflate);
buttonA = inflate.findViewById(R.id.button_A);
buttonA.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
PopupWindow popupWindow = new PopupWindow(MainActivity.this);
View inflate1 = LayoutInflater.from(MainActivity.this).inflate(R.layout.popup_layout, null);
popupWindow.setContentView(inflate1);
popupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.showAsDropDown(buttonA);
}
});
buttonB = inflate.findViewById(R.id.button_B);
buttonB.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Notification.Builder builder1 = new Notification.Builder(MainActivity.this);
builder1.setSmallIcon(R.mipmap.a);
builder1.setContentTitle("呀了个呸的");
builder1.setDefaults(Notification.DEFAULT_ALL);
builder1.setPriority(Notification.PRIORITY_MAX);
Intent intent = new Intent(MainActivity.this, Main2Activity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 100, intent, 0);
builder1.setContentIntent(pendingIntent);
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(1, builder1.build());
}
});
buttonC = inflate.findViewById(R.id.button_C);
buttonC.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
PopupMenu popupMenu = new PopupMenu(MainActivity.this, buttonC);
popupMenu.inflate(R.menu.menu);
popupMenu.show();
}
});
AlertDialog dialog = builder.create();
dialog.setCanceledOnTouchOutside(true);
dialog.show();
}
});
}
}
package com.example.practice0929;
import android.app.DatePickerDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.DatePicker;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Calendar;
public class Main2Activity extends AppCompatActivity {
private ImageView imageViewId,imageView_id;
private TextView textViewFly;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
textViewFly = (TextView) findViewById(R.id.textView_fly);
imageViewId = (ImageView) findViewById(R.id.imageView_id);
textViewFly.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast toast = new Toast(Main2Activity.this);
View inflate = LayoutInflater.from(Main2Activity.this).inflate(R.layout.notification_layout, null);
toast.setView(inflate);
imageView_id = inflate.findViewById(R.id.imageView_id);
imageView_id.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Calendar calendar = Calendar.getInstance();
new DatePickerDialog(Main2Activity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
Toast.makeText(Main2Activity.this, year+"-"+(month-1)+"-"+dayOfMonth, Toast.LENGTH_SHORT).show();
}
},calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)).show();
}
});
toast.setDuration(Toast.LENGTH_LONG);
toast.show();
}
});
imageViewId.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Calendar calendar = Calendar.getInstance();
new DatePickerDialog(Main2Activity.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
Toast.makeText(Main2Activity.this, year+"-"+(month-1)+"-"+dayOfMonth, Toast.LENGTH_SHORT).show();
}
},calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)).show();
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main2Activity">
<ImageView
android:id="@+id/imageView_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@mipmap/a"
android:scaleType="fitXY"/>
<TextView
android:id="@+id/textView_fly"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="呀了个呸的"
android:layout_centerInParent="true"
android:textSize="30sp"
android:layout_alignBottom="@+id/imageView_id"/>
</RelativeLayout>
2.
package com.example.shrimp;
import java.util.List;
public class FoodBean {
private int ret;
private List<DataBean> data;
public int getRet() {
return ret;
}
public void setRet(int ret) {
this.ret = ret;
}
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public static class DataBean {
private String id;
private String title;
private String pic;
private String collect_num;
private String food_str;
private int num;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getPic() {
return pic;
}
public void setPic(String pic) {
this.pic = pic;
}
public String getCollect_num() {
return collect_num;
}
public void setCollect_num(String collect_num) {
this.collect_num = collect_num;
}
public String getFood_str() {
return food_str;
}
public void setFood_str(String food_str) {
this.food_str = food_str;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
}
}
package com.example.shrimp;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpUtil {
public static String getJsonString(String path) {
InputStream is = null;
ByteArrayOutputStream baos = null;
try {
URL url = new URL(path);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
connection.connect();
if (connection.getResponseCode() == 200) {
is = connection.getInputStream();
baos = new ByteArrayOutputStream();
int len = 0;
byte[] bys = new byte[1024];
while ((len = is.read(bys)) != -1) {
baos.write(bys, 0, len);
baos.flush();
}
return baos.toString();
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
package com.example.shrimp;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import java.util.List;
public class MyAdapter extends BaseAdapter {
private Context context;
private List<FoodBean.DataBean> list;
private LayoutInflater layoutInflater;
public MyAdapter(Context context, List<FoodBean.DataBean> list) {
this.context = context;
this.list = list;
this.layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null){
viewHolder = new ViewHolder();
convertView = layoutInflater.inflate(R.layout.layout_item,null);
viewHolder.imageViewItemPic = convertView.findViewById(R.id.imageView_item_pic);
viewHolder.textViewItemTitle = convertView.findViewById(R.id.textView_item_title);
viewHolder.textViewItemFootStr = convertView.findViewById(R.id.textView_item_foot_str);
viewHolder.textViewItemCollectNum = convertView.findViewById(R.id.textView_item_collect_num);
convertView.setTag(viewHolder);
}else {
viewHolder = (ViewHolder) convertView.getTag();
}
Glide.with(context).load(list.get(position).getPic()).into(viewHolder.imageViewItemPic);
viewHolder.textViewItemTitle.setText(list.get(position).getTitle());
viewHolder.textViewItemFootStr.setText(list.get(position).getFood_str());
viewHolder.textViewItemCollectNum .setText(list.get(position).getCollect_num());
return convertView;
}
static class ViewHolder{
private ImageView imageViewItemPic;
private TextView textViewItemTitle;
private TextView textViewItemFootStr;
private TextView textViewItemCollectNum;
}
}
package com.example.shrimp;
import android.os.AsyncTask;
import android.util.Log;
import com.google.gson.Gson;
import java.util.List;
public class MyAsyncTask extends AsyncTask<String,Void, List<FoodBean.DataBean>> {
private List<FoodBean.DataBean> list;
private MyAdapter adapter;
public MyAsyncTask(List<FoodBean.DataBean> list, MyAdapter adapter) {
this.list = list;
this.adapter = adapter;
}
@Override
protected List<FoodBean.DataBean> doInBackground(String... strings) {
String json = HttpUtil.getJsonString(strings[0]);
if (json != null){
FoodBean foodBean = new Gson().fromJson(json, FoodBean.class);
List<FoodBean.DataBean> data = foodBean.getData();
return data;
}else {
Log.i("TAG", "doInBackground: json为空");
}
return null;
}
@Override
protected void onPostExecute(List<FoodBean.DataBean> dataBeans) {
super.onPostExecute(dataBeans);
if (dataBeans != null){
list.addAll(dataBeans);
adapter.notifyDataSetChanged();
}else {
Log.i("TAG", "onPostExecute: dataBeans为空");
}
}
}
package com.example.shrimp;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private String path ="http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1";
private ListView listView;
private List<FoodBean.DataBean> list = new ArrayList<>();
private MyAdapter adapter;
private TextView button_sao;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
loadNetWorkData();
}
private void loadNetWorkData() {
new MyAsyncTask(list,adapter).execute(path);
}
private void initView() {
listView = findViewById(R.id.listView_qq);
adapter = new MyAdapter(this,list);
listView.setAdapter(adapter);
button_sao = findViewById(R.id.button_sao);
button_sao.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
PopupWindow popupWindow = new PopupWindow(MainActivity.this);
View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.popup_layout, null);
popupWindow.setContentView(inflate);
popupWindow.setOutsideTouchable(true);
popupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.showAsDropDown(button_sao,0,0);
}
});
}
}
