手机联系人

主要代码

package com.example.day0.fragment;


import android.Manifest;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;

import com.example.day0.R;
import com.example.day0.Util.Search;
import com.example.day0.adapter.ListAdapter;
import com.example.day0.entity.Phone;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * A simple {@link Fragment} subclass.
 */
public class ContactsFragment extends Fragment {

    private static final String TAG = "ContactsFragment";

    private ListAdapter listAdapter;

    private List<Phone> phoneList = new ArrayList<>();
    private List<Character> stringList = new ArrayList<>();

    private String titles = "";

    public ContactsFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        final View inflate = inflater.inflate(R.layout.fragment_contacts, container, false);

        ListView listView = inflate.findViewById(R.id.list_item);
        LinearLayout linearLayout = inflate.findViewById(R.id.ll_item);
        final EditText ed_search = inflate.findViewById(R.id.ed_search);

//        char a = 'A';
//        stringList.add(0,a);
        for (int i = 0; i < 27; i++) {
            char zi = (char) (65+i);
            stringList.add(zi);
        }

        for (int i = 0; i < stringList.size(); i++) {
            TextView textView = new TextView(getActivity());
            textView.setText(stringList.get(i).toString());
            linearLayout.addView(textView);
        }

        //运行时权限
        String[] permission = {Manifest.permission.READ_CONTACTS,Manifest.permission.CALL_PHONE};
        requestPermissions(permission,8848);

        ed_search.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void afterTextChanged(Editable editable) {
                //如果改变了，并且文本长度>0
                if (editable.toString().length() > 0) {
                    String search = ed_search.getText().toString();
                    Log.i(TAG, "afterTextChanged: "+search);
                    List<Map<String, String>> maps = Search.searchContacts(getActivity(), search);
                } else {
                    //如果改变了，并且文本长度=0

                }
            }
        });

        Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
        ContentResolver resolver = getActivity().getContentResolver();
        //phonebook_label 联系人首字母 分组
        Cursor cursor = resolver.query(uri, null, null, null, "phonebook_label");
        if (cursor != null){
            while (cursor.moveToNext()){
                String name = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                String tel = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                String title = cursor.getString(cursor.getColumnIndex("phonebook_label"));

                if (title.equals(titles)){
                    phoneList.add(new Phone(name, tel, title, Phone.TYPE_NAME));
                }else {
                    phoneList.add(new Phone(name, tel, title, Phone.TYPE_TITLE));
                    phoneList.add(new Phone(name, tel, title, Phone.TYPE_NAME));
                }

            }
            //适配数据
            listAdapter = new ListAdapter(getActivity(), phoneList);
            listView.setAdapter(listAdapter);

        }else {
            Toast.makeText(getActivity(), "读取数据失败", Toast.LENGTH_SHORT).show();
        }
        cursor.close();
        listAdapter.notifyDataSetChanged();


        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                //拨打电话的功能
                Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneList.get(i).getTel()));
                startActivity(intent);

            }
        });

        return inflate;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 8848 && grantResults[0] == PackageManager.PERMISSION_GRANTED){

        }else {
            Toast.makeText(getActivity(), "同意权限才能进行", Toast.LENGTH_SHORT).show();
        }
    }
}

适配器

package com.example.day0.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.example.day0.R;
import com.example.day0.entity.Phone;

import java.util.List;

public class ListAdapter extends BaseAdapter {

    private Context context;
    private List<Phone> phoneList;
    private LayoutInflater layoutInflater;

    public ListAdapter(Context context, List<Phone> phoneList) {
        this.context = context;
        this.phoneList = phoneList;
        layoutInflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return phoneList.size();
    }

    @Override
    public Object getItem(int i) {
        return null;
    }

    @Override
    public long getItemId(int i) {
        return 0;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {
        return phoneList.get(position).getType();
    }

    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        TitleViewHoder titleViewHoder = new TitleViewHoder();
        ContansViewHoder contansViewHoder = new ContansViewHoder();

        if (view == null) {

            if (getItemViewType(i) == Phone.TYPE_TITLE){
                view = LayoutInflater.from(context).inflate(R.layout.layout_title,null);
                titleViewHoder.title = view.findViewById(R.id.tv_phone_title);
                view.setTag(titleViewHoder);
            }else {
                view = LayoutInflater.from(context).inflate(R.layout.layout_list,null);
                contansViewHoder.name = view.findViewById(R.id.tv_phone_name);
                contansViewHoder.tel = view.findViewById(R.id.tv_phone_tel);
                view.setTag(contansViewHoder);
            }

        } else {

            if (getItemViewType(i) == Phone.TYPE_TITLE){
                titleViewHoder = (TitleViewHoder) view.getTag();

            }else {
                contansViewHoder = (ContansViewHoder) view.getTag();
            }

        }

        if (getItemViewType(i) == Phone.TYPE_TITLE){
            titleViewHoder.title.setText(phoneList.get(i).getTitle());
        }else {
            contansViewHoder.name.setText(phoneList.get(i).getName());
            contansViewHoder.tel.setText(phoneList.get(i).getTel());
        }

        return view;
    }

    private class ContansViewHoder {
        private TextView name;
        private TextView tel;
    }

    private class TitleViewHoder {
        private TextView title;
    }
}

实体类

package com.example.day0.entity;

public class Phone {

    public static final int TYPE_TITLE = 0;
    public static final int TYPE_NAME = 1;

    private String name;
    private String tel;
    private String title;//标题
    private int type;//布局类型

    public Phone(String name, String tel, String title, int type) {
        this.name = name;
        this.tel = tel;
        this.title = title;
        this.type = type;
    }

    @Override
    public String toString() {
        return "Phone{" +
                "name='" + name + '\'' +
                ", tel='" + tel + '\'' +
                ", title='" + title + '\'' +
                ", type=" + type +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTel() {
        return tel;
    }

    public void setTel(String tel) {
        this.tel = tel;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }
}

OkHttp get请求 post请求上传文件下载文件

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_get"
        android:text="GET"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btn_post"
        android:text="POST"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btn_uploading"
        android:text="上传"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/btn_downloading"
        android:text="下载"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <SeekBar
        android:id="@+id/seek"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

代码

package com.example.dayex01;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.Toast;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.TimeUnit;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.ResponseBody;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private static final String TAG = "MainActivity";

    private Button btnGet;
    private Button btnPost;
    private Button btnUploading;
    private Button btnDownloading;

    private SeekBar seekBar;
    private int zhi;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(@NonNull Message msg) {
            super.handleMessage(msg);
        }
    };

    private String getURL = "http://api.yunzhancn.cn/api/app.interface.php?siteid=78703&itemid=2&act=ad_app";
    private String postURL = "http://api.yunzhancn.cn/api/app.interface.php?siteid=78703&";
    private String mp4URL = "http://uvideo.spriteapp.cn/video/2019/0512/56488d0a-7465-11e9-b91b-1866daeb0df1_wpd.mp4";

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

        btnGet = (Button) findViewById(R.id.btn_get);
        btnPost = (Button) findViewById(R.id.btn_post);
        btnUploading = (Button) findViewById(R.id.btn_uploading);
        btnDownloading = (Button) findViewById(R.id.btn_downloading);

        btnGet.setOnClickListener(this);
        btnPost.setOnClickListener(this);
        btnUploading.setOnClickListener(this);
        btnDownloading.setOnClickListener(this);

        seekBar = findViewById(R.id.seek);
        seekBar.setProgress(zhi);

        String[] permission = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
        requestPermissions(permission, 8848);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 8848 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

        } else {
            Toast.makeText(this, "必须同意", Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.btn_get:
                get();
                break;
            case R.id.btn_post:
                post();
                break;
            case R.id.btn_uploading:
                try {
                    upload();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.btn_downloading:
                down();
                break;
            default:
        }

    }

    private void upload() throws IOException {
        OkHttpClient client = new OkHttpClient.Builder()
                .callTimeout(5, TimeUnit.SECONDS)
                .readTimeout(5, TimeUnit.SECONDS)
                .build();

        //上传文件的请求体
        MultipartBody requestBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                // 服务器端的名字
                .addFormDataPart("file", "JinSiYu.mp3",
                        RequestBody.create(MediaType.parse("Media/mp3"), new File("/sdcard/Music/Ice Paper - 心如止水.flac")))
                .build();

        //142.167 自己
        //113.244 讲师
        final Request request = new Request.Builder()
                .url("http://169.254.142.167/hfs")
                .post(requestBody)//post提交必须要设置请求体
                .build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

            }
        });
    }


    private void down() {

        //创建对象 设置属性
        OkHttpClient client = new OkHttpClient.Builder()
                .callTimeout(1, TimeUnit.MINUTES)
                .readTimeout(1, TimeUnit.MINUTES)
                .build();

        //Request对象
        Request request = new Request.Builder()
                .url(mp4URL)
                .get()
                .build();

        //客户端发送请求
        Call call = client.newCall(request);

        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();

                long l = body.contentLength();//总长度
                Log.i(TAG, "onResponse: 总大小" + l);

                seekBar.setMax((int) l);

                InputStream inputStream = body.byteStream();
                FileOutputStream fileOutputStream = new FileOutputStream("/sdcard/Movies/asd.mp4");
                byte[] bytes = new byte[2048];
                int len = 0;
                zhi = 0;//进度

                while ((len = inputStream.read(bytes)) != -1) {
                    zhi += len;

                    handler.post(new Runnable() {
                        @Override
                        public void run() {

                            seekBar.setProgress(zhi);
                        }
                    });

                    fileOutputStream.write(bytes, 0, len);
                    Log.i(TAG, "onResponse: " + zhi);
                }


            }
        });
    }

    private void post() {
        //创建对象 设置属性
        OkHttpClient client = new OkHttpClient.Builder()
                .callTimeout(1, TimeUnit.MINUTES)
                .readTimeout(1, TimeUnit.MINUTES)
                .build();

        //itemid=2&act=ad_app
        FormBody formBody = new FormBody.Builder()
                .add("itemid", "2")
                .add("act", "ad_app")
                .build();
        //Request对象
        Request request = new Request.Builder()
                .url(postURL)
                .post(formBody)
                .build();

        //客户端发送请求
        Call call = client.newCall(request);

        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.i(TAG, "onFailure: " + e.getMessage());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                //注意单词不一样
                ResponseBody body = response.body();
                //特别注意  body.string()  只可以被调用一次 是IO流的管道 输出后就空了
                String json = body.string();
                Log.i(TAG, "onResponse: " + json);
            }
        });

    }

    private void get() {
        //创建对象 设置属性
        OkHttpClient.Builder builder = new OkHttpClient.Builder();
        builder.readTimeout(1, TimeUnit.MINUTES);
        builder.callTimeout(1, TimeUnit.MINUTES);
        OkHttpClient client = builder.build();

        //Request对象
        Request.Builder builder1 = new Request.Builder();
        builder1.url(getURL);
        builder1.get();
        final Request request = builder1.build();

        //客户端发送请求
        Call call = client.newCall(request);

        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.i(TAG, "onFailure: " + e.getMessage());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                //注意单词不一样
                ResponseBody body = response.body();
                String json = body.string();
                Log.i(TAG, "onResponse: " + json);
            }
        });

    }


}

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Android Studio 2 -1 手机联系人（多布局）

Android Studio 2 -1 手机联系人（多布局）与 okhttp

手机联系人

主要代码

适配器

实体类

OkHttp get请求 post请求 上传文件 下载文件

布局文件

代码

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OkHttp get请求 post请求上传文件下载文件