將文本文件寫入android存儲以供以后查看

Question

因此，我試圖將一些日志基本上寫入文本文件，以便以后查看。 我在物理電話上而不是仿真器上運行它。 我已經嘗試了許多不同的變體，但我得到的最多是它寫入數據/數據和存儲/模擬的圖像，但是我永遠無法訪問我的文件。 任何幫助，將不勝感激。 我最近未刪除的一些示例是：

String filename = "myfile.txt";
try {
    File path = new File(context.getFilesDir(), "myfolder");
    if (!path.exists())
        path.mkdir();
    File output = new File(path, filename);
    BufferedWriter buff = new BufferedWriter(new FileWriter(output));
    buff.append("hi");
    Log.d("Success",
            "Successfully wrote a file " + context.getFilesDir());
} catch (Exception e) {
    e.printStackTrace();
}

和

final String appPath = String.format("%s/Datafiles",
        context.getFilesDir());
File path = new File(appPath);
if (!path.exists()) {
    path.mkdir();
}
String fileName = String.format("%s/filedemo.txt", appPath);

和

try {
    String filename = "myfile.txt";
    File path = new File(Environment.getRootDirectory(), "myfolder");
    if (!path.exists())
        path.mkdir();
    File output = new File(path, filename);
    BufferedWriter buff = new BufferedWriter(new FileWriter(output));
    buff.append("hi");
    Log.d("Success",
            "Successfully wrote a file " + context.getFilesDir());
} catch (Exception e) {
    e.printStackTrace();
}

以下兩個都將其放在/storage/emulated/0/Android/data/com.example.simplelte/files/system/stuff/test.txt和/storage/emulated/0/Android/data/com.example.simplelte下/files/storage/emulated/0/stuff/test.txt

try {
    File file = new File(context.getExternalFilesDir(Environment
            .getRootDirectory().getCanonicalPath()), "stuff");
    if (!file.mkdirs()) {
        Log.e(LOG_TAG, "Directory not created");
    }
    File output = new File(file, "test.txt");
    BufferedWriter buff;
    buff = new BufferedWriter(new FileWriter(output));
    buff.append("hi");
    buff.close();
    Log.d("Success", output.getCanonicalPath());
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

和

try {
    File file = new File(context.getExternalFilesDir(Environment
            .getExternalStorageDirectory().getCanonicalPath()),
            "stuff");
    if (!file.mkdirs()) {
        Log.e(LOG_TAG, "Directory not created");
    }
    File output = new File(file, "test.txt");
    BufferedWriter buff;
    buff = new BufferedWriter(new FileWriter(output));
    buff.append("hi");
    buff.close();
    Log.d("Success", output.getCanonicalPath());
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

以及更多。 我遵循了我能想到的每個示例。 我只是想查看Computer \\ Nexus 5 \\ Internal storage \\下的文本文件，我只是一個有簡單願望的簡單人。 為什么這必須如此復雜。

Answer 1

你嘗試過這個嗎？

File sdCard = Environment.getExternalStorageDirectory();
File dir = new File (sdCard.getAbsolutePath() + "/");
File file = new File(dir, "text.txt");

FileOutputStream f = new FileOutputStream(file);