Demo2Activity.java

package com.duke.fileselector;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.duke.dfileselector.activity.DefaultSelectorActivity;
import com.duke.dfileselector.util.FileSelectorUtils;

import java.util.ArrayList;

/**
 * 使用默认的Activity启动选择器
 */
public class Demo2Activity extends AppCompatActivity implements View.OnClickListener {
    private TextView selectFIle;
    public static final String TAG = "MainActivityTest";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_demo2);
        selectFIle = findViewById(R.id.textview_select_file);
        selectFIle.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (v == null) {
            return;
        }
        int id = v.getId();
        if (id == R.id.textview_select_file) {
//            DefaultSelectorActivity.startActivity(this);//包含广播
            DefaultSelectorActivity.startActivityForResult(this, false, true, 3);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK && requestCode == DefaultSelectorActivity.FILE_SELECT_REQUEST_CODE) {
            printData(DefaultSelectorActivity.getDataFromIntent(data));
            Demo2Activity.this.finish();
        }
    }

//    private BroadcastReceiver receiver = new BroadcastReceiver() {
//        @Override
//        public void onReceive(Context context, Intent intent) {
//            if (context == null || intent == null) {
//                return;
//            }
//            if (DefaultSelectorActivity.FILE_SELECT_ACTION.equals(intent.getAction())) {
//                printData(DefaultSelectorActivity.getDataFromIntent(intent));
//            }
//        }
//    };


//    private boolean isRegister;
//    private IntentFilter intentFilter = new IntentFilter(DefaultSelectorActivity.FILE_SELECT_ACTION);
//
//    @Override
//    protected void onResume() {
//        super.onResume();
//        if (!isRegister) {
//            registerReceiver(receiver, intentFilter);
//            isRegister = true;
//        }
//    }

//    @Override
//    protected void onDestroy() {
//        super.onDestroy();
//        if (isRegister) {
//            unregisterReceiver(receiver);
//            isRegister = false;
//        }
//    }

    private void printData(ArrayList<String> list) {
        if (FileSelectorUtils.isEmpty(list)) {
            return;
        }
        int size = list.size();
        Log.v(TAG, "获取到数据-开始 size = " + size);
        StringBuffer stringBuffer = new StringBuffer("选中的文件：\r\n");
        for (int i = 0; i < size; i++) {
            Log.v(TAG, (i + 1) + " = " + list.get(i));
            stringBuffer.append(list.get(i));
            stringBuffer.append("\r\n");
        }
        Toast.makeText(this, stringBuffer.toString(), Toast.LENGTH_SHORT).show();
        Log.v(TAG, "获取到数据-结束");
    }
}