android6.0创建新的文件夹

Android文件夹创建示例

最新推荐文章于 2022-05-30 14:38:54 发布

原创最新推荐文章于 2022-05-30 14:38:54 发布 · 3.7k 阅读

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本文介绍了一个Android应用中创建外部存储目录的具体实现方法。通过检查权限并请求写入外部存储的权限，确保应用程序能够在用户的设备上创建指定的文件夹。

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import java.io.File;

import butterknife.Bind;
import butterknife.ButterKnife;

/**
 * 创建新的文件夹
 */
public class Main14Activity extends AppCompatActivity {

    @Bind(R.id.main14_btn)
    Button main14Btn;
    private final int REQUESTCODE = 101;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main14);
        ButterKnife.bind(this);


        main14Btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                test();
            }
        });

    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUESTCODE) {
            if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE) && grantResults[0]
                    == PackageManager.PERMISSION_GRANTED) {
                //用户同意
                test();
            } else {
                //用户不同意

            }
        }
    }

    private void test() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            int checkSelfPermission = checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
            if (checkSelfPermission == PackageManager.PERMISSION_DENIED) {
                requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUESTCODE);
            }
        }
        File appDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getAbsolutePath() + "/mPic");
        if (!appDir.exists()) {
            boolean isSuccess = appDir.mkdirs();
            Log.d("isSuccess:" ,"----------0------------------"+isSuccess);
        }
    }
}