个人作业冲刺（四）

package com.example.temperature;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.io.File;


public class InfoActivity extends AppCompatActivity {

    private AlertDialog alertDialog;

    String[] permissions = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};

    private int REQUEST_PERMISSION_CODE = 1000;

    //请求权限
    private void requestPermission() {
        if (Build.VERSION.SDK_INT > 23) {
            if (ContextCompat.checkSelfPermission(InfoActivity.this, permissions[0]) == PackageManager.PERMISSION_GRANTED) {

            } else {
                requestPermissions(permissions, REQUEST_PERMISSION_CODE);
            }
        }
    }

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

        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
        builder.detectFileUriExposure();
        Button add =(Button) findViewById(R.id.add);
        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(InfoActivity.this,AddInfoActicity.class);
                startActivity(intent);
            }
        });
        Button count = findViewById(R.id.account);
        count.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(InfoActivity.this,CountActivity.class);
                startActivity(intent);
            }
        });

        Button table = findViewById(R.id.table);
        table.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                exportExcel(InfoActivity.this);

                AlertDialog.Builder dialog = new AlertDialog.Builder(InfoActivity.this);
                dialog.setTitle("提示");
                dialog.setMessage("创建成功");
                dialog.setCancelable(false);
                dialog.setPositiveButton("确认", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(InfoActivity.this,"创建成功",Toast.LENGTH_SHORT).show();
                    }
                });
                dialog.show();
            }
        });

        final Button zhexian=(Button)findViewById(R.id.zhexian);
        zhexian.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(InfoActivity.this,zhexian.class);
                startActivity(intent);
            }
        });

        Button ditu=(Button)findViewById(R.id.ditu);
        ditu.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(Intent.ACTION_VIEW);
                intent.setData(Uri.parse("https://me.bdp.cn/api/su/1QLYZ7X0"));
                startActivity(intent);
            }
        });
    }
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_PERMISSION_CODE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            } else {
                AlertDialog.Builder builder = new AlertDialog.Builder(InfoActivity.this);
                builder.setTitle("permission");
                builder.setMessage("点击允许才可以使用");
                builder.setPositiveButton("去允许", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        if (alertDialog != null && alertDialog.isShowing()) {
                            alertDialog.dismiss();
                        }
                        ActivityCompat.requestPermissions(InfoActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
                    }
                });
                alertDialog = builder.create();
                alertDialog.setCanceledOnTouchOutside(false);
                alertDialog.show();
            }
        }
    }

    private void showDialogTipUserRequestPermission() {
        ActivityCompat.requestPermissions(this, permissions, 321);
    }




    //导出
    private void exportExcel(Context context) {
        String path = getExternalFilesDir("test").getPath();
        File file = new File(path+"/"+"xx");
        if (!file.exists()) {
            file.mkdirs();
        }
        File files = new File(file.getPath()+"/"+"text.xls");
        ExcelUtil.initExcel(files);
    }


}