帮我写一个安卓简单的程序,要求实现内存读取,adb shell命令行目录显示 展示文件存储目录。
时间: 2024-02-25 20:56:04 浏览: 20
好的,以下是一个简单的安卓程序,实现了内存读取和展示文件存储目录的功能,并通过adb shell命令行实现目录显示。具体实现请参考注释:
```java
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 读取内存
long totalMemory = Runtime.getRuntime().totalMemory();
long freeMemory = Runtime.getRuntime().freeMemory();
long maxMemory = Runtime.getRuntime().maxMemory();
// 显示内存信息
ListView memoryListView = findViewById(R.id.memory_list_view);
List<String> memoryList = new ArrayList<>();
memoryList.add("Total Memory: " + totalMemory);
memoryList.add("Free Memory: " + freeMemory);
memoryList.add("Max Memory: " + maxMemory);
ArrayAdapter<String> memoryAdapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, memoryList);
memoryListView.setAdapter(memoryAdapter);
// 展示文件存储目录
ListView fileListView = findViewById(R.id.file_list_view);
List<String> fileList = new ArrayList<>();
File externalStorageDirectory = Environment.getExternalStorageDirectory();
File[] files = externalStorageDirectory.listFiles();
if (files != null) {
for (File file : files) {
fileList.add(file.getName());
}
}
ArrayAdapter<String> fileAdapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, fileList);
fileListView.setAdapter(fileAdapter);
// 通过adb shell命令行显示目录列表
try {
Process process = Runtime.getRuntime().exec("ls /sdcard/");
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
List<String> adbList = new ArrayList<>();
String line;
while ((line = reader.readLine()) != null) {
adbList.add(line);
}
ArrayAdapter<String> adbAdapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, adbList);
ListView adbListView = findViewById(R.id.adb_list_view);
adbListView.setAdapter(adbAdapter);
} catch (IOException e) {
e.printStackTrace();
}
}
}
```
需要注意的是,为了使用adb shell命令,您需要在AndroidManifest.xml文件中添加以下权限:
```xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
```
另外,您需要在布局文件(activity_main.xml)中添加三个ListView组件,分别对应内存信息、文件存储目录和adb shell命令行目录显示。例如:
```xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Memory Information" />
<ListView
android:id="@+id/memory_list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="File Storage Directory" />
<ListView
android:id="@+id/file_list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ADB Shell Directory" />
<ListView
android:id="@+id/adb_list_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
```
希望这个例子能够帮助您实现您的安卓程序。