Android开源文件选择器ExFilePicker的简单应用

阳光穿透心脏的1/2处 2022-05-16 11:48 492阅读 0赞

文章转自：[https://blog.csdn.net/zhangphil/article/details/71740591][https_blog.csdn.net_zhangphil_article_details_71740591]

在新版的Android中（如Android 7.0+），文件选择由于权限限制,Uri变化，文件资源路径格式改版等等，变得比较复杂起来，比如，得在Androidmanifest配置FileProvider完了还得写xml目录下的文件path这些等等。一些第三方的文件选择器，就算没有上面这些动作，一般也得在Androidmanifest写几个Activity。而ExFilePicker则无需上面的繁琐操作，一不需要在Androidmanifest里面定义FileProvider，二不需要写xml文件目录，三不需要在Androidmanifest定义任何Activity，直接在上层Java代码写逻辑，实现文件选择。  
ExFilePicker在github上的项目地址：[https://github.com/bartwell/ExFilePicker][https_github.com_bartwell_ExFilePicker]

首先需要在build.gradle添加引用：

compile 'ru.bartwell:exfilepicker:2.1'

案例：

package zhangfei.file;
     
    import android.content.Intent;
    import android.net.Uri;
    import android.os.Environment;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.text.TextUtils;
    import android.view.View;
    import android.widget.Toast;
     
    import java.io.File;
    import java.util.List;
     
    import ru.bartwell.exfilepicker.ExFilePicker;
    import ru.bartwell.exfilepicker.data.ExFilePickerResult;
     
    public class MainActivity extends AppCompatActivity {
     
        private AppCompatActivity mActivity;
        private final int EX_FILE_PICKER_RESULT = 0xfa01;
        private String startDirectory = null;// 记忆上一次访问的文件目录路径
     
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            mActivity = this;
            setContentView(R.layout.activity_main);
            findViewById(R.id.choose).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    ExFilePicker exFilePicker = new ExFilePicker();
                    exFilePicker.setCanChooseOnlyOneItem(true);// 单选
                    exFilePicker.setQuitButtonEnabled(true);
     
                    if (TextUtils.isEmpty(startDirectory)) {
                        exFilePicker.setStartDirectory(Environment.getExternalStorageDirectory().getPath());
                    } else {
                        exFilePicker.setStartDirectory(startDirectory);
                    }
     
                    exFilePicker.setChoiceType(ExFilePicker.ChoiceType.FILES);
                    exFilePicker.start(mActivity, EX_FILE_PICKER_RESULT);
                }
            });
        }
     
        @Override
        public void onActivityResult(int requestCode, int resultCode, Intent data) {
            if (requestCode == EX_FILE_PICKER_RESULT) {
                ExFilePickerResult result = ExFilePickerResult.getFromIntent(data);
                if (result != null && result.getCount() > 0) {
                    String path = result.getPath();
     
                    List<String> names = result.getNames();
                    for (int i = 0; i < names.size(); i++) {
                        File f = new File(path, names.get(i));
                        try {
                            Uri uri = Uri.fromFile(f); //这里获取了真实可用的文件资源
                            Toast.makeText(mActivity, "选择文件:" + uri.getPath(), Toast.LENGTH_SHORT)
                                    .show();
     
                            startDirectory = path;
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }
    }

完！！！

[https_blog.csdn.net_zhangphil_article_details_71740591]: https://blog.csdn.net/zhangphil/article/details/71740591
[https_github.com_bartwell_ExFilePicker]: https://github.com/bartwell/ExFilePicker