android studio连接木木模拟器
adb connect 127.0.0.1:7555
//如果没有配置 adb 的环境变量，那就找到他的绝对路径，比如 /platform-tools/abd
//然后
/platform-tools/abd connect 127.0.0.1:7555
推送信息
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Intent intent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, 0);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
String channelId = "default";
String channelName = "默认通知";
//new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_HIGH)
notificationManager.createNotificationChannel(new NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_HIGH));
}
Notification notification = new NotificationCompat.Builder(MainActivity.this, "default")
.setContentTitle("踢踢踢踢踢腿")
.setContentText("text")
.setDefaults(NotificationCompat.DEFAULT_ALL)
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
.setWhen(System.currentTimeMillis())
.setContentIntent(pendingIntent)
.setVibrate(new long[]{0, 1000, 1000, 1000})
.setLights(Color.GREEN, 1000, 1000)
.setAutoCancel(true).build();
notificationManager.notify(1, notification);
图片显示
//xml
<com.example.myapplication.ImageViewCustom
android:id="@+id/ImageView"
android:layout_width="match_parent"
android:layout_height="190dp"
android:adjustViewBounds="true"
android:scaleType="fitXY" />
//java
ImageViewCustom iv = findViewById(R.id.ImageView);
iv.setBitmap(path);
public class ImageViewCustom extends AppCompatImageView {
public ImageViewCustom(Context context) {
super(context);
}
public ImageViewCustom(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
public void setBitmap(String path) {
AppCompatImageView _self = this;
new Thread() {
public void run() {
try {
URL url = new URL(path);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
int code = connection.getResponseCode();
if (code == 200) {
InputStream is = connection.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(is);
_self.setImageBitmap(bitmap);
is.close();
}
} catch (Exception e) {
e.printStackTrace();
Log.e("TEST", "链接失败");
}
}
}.start();
}
}
//网络权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.myapplication">
<!--相机权限-->
<uses-permission android:name="android.permission.CAMERA" />
<!--网络权限-->
<uses-permission android:name="android.permission.INTERNET" />
<!--SD卡权限-->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:usesCleartextTraffic="true" //明文限制
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.MyApplication"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- 声明新的xml页面 -->
<activity
android:name=".LoginActivity"
android:exported="true" />
</application>
</manifest>
拍照 选取图片
private final ActivityResultLauncher<String> activityResultLauncher = registerForActivityResult(
new ActivityResultContracts.GetContent(), result -> {
//视频文件路径
String videoPath = result.getPath();
}
);
//选取视频文件（和选取相册类似）
activityResultLauncher.launch("video/*");
//调用相册选择图片
activityResultLauncher.launch("image/*");
//拍照
private final ActivityResultLauncher<Void> mLauncherCamera = registerForActivityResult(new ActivityResultContracts.TakePicturePreview(), result -> {
//result为拍摄照片Bitmap格式
});
//启动拍照（注意先检查权限）
//开启拍照,返回结果Bitmap
mLauncherCamera.launch(null);
/**
* 检查权限并拍照。
* 调用相机前先检查权限。
*/
private void checkPermissionAndCamera() {
// 申请相机权限的requestCode
final int PERMISSION_CAMERA_REQUEST_CODE = 0x00000012;
int hasCameraPermission = ContextCompat.checkSelfPermission(getApplication(),
Manifest.permission.CAMERA);
if (hasCameraPermission == PackageManager.PERMISSION_GRANTED) {
//有调起相机拍照。
launchCamera();
} else {
//没有权限，申请权限。
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, PERMISSION_CAMERA_REQUEST_CODE);
}
}
//多选
private final ActivityResultLauncher<String[]> activityResultLauncher = registerForActivityResult(
new ActivityResultContracts.OpenMultipleDocuments(), result -> {
//视频文件路径
Log.e("OpenMultipleDocuments", result.toString());
}
);
//页面跳转
//新建一个Intent(当前Activity, SecondActivity)=====显示Intent
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
//启动Intent
startActivity(intent);
//传值给下一个Activity
String data = "我是上一个Activity中传过来的值";
intent.putExtra("extra_data", data);
//获取上一个Activity传过来的值
Intent intent = getIntent();
String data = intent.getStringExtra("extra_data");
//将获取的值显示在TextView上
TextView dataTextView = (TextView) findViewById(R.id.data_text_view);
dataTextView.setText(data);
//点击Button返回上一个Activity
Button backButton = (Button) findViewById(R.id.bank_button);
backButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
//使用Intent打开系统功能
//调用本地浏览器打开网址
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("http://www.baidu.com"));
intent.setData(Uri.parse("tel:10010"));
startActivity(intent);
//从返回中的Activity中获取值
Intent intent = new Intent(MainActivity.this, ThirdActivity.class);
startActivityForResult(intent, 1);
//返回传值
Intent intent = getIntent();
intent.putExtra("data_return", "我是第三个Activity中返回的数据");
setResult(RESULT_OK, intent);
finish();
无法下载依赖
//到本地的 gradle.properties ⽂件后，注释掉如下代理⾏即可
#systemProp.https.proxyPort=1086
#systemProp.http.proxyHost=127.0.0.1
#systemProp.https.proxyHost=127.0.0.1
#systemProp.http.proxyPort=1086
image.png
