1. 确认是否已经正确添加了LeakCanary到项目中，包括相关依赖库和配置。
2. 在build.gradle文件中添加以下代码：

android {
  // ...
  defaultConfig {
    // ...
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" // 替换为你自己的InstrumentationRunner
  }
  testOptions {
    unitTests {
      includeAndroidResources = true
    }
    execution {
      // add this line
      listeners {
        // optionally, enable FailTestOnLeakRunListener to automatically fail tests
        // that leak memory. see https://square.github.io/leakcanary/fail-test-on-leak/
        listener "com.squareup.leakcanary.FailTestOnLeakRunListener"
      }
    }
  }
}

dependencies {
  // ...
  androidTestImplementation 'com.squareup.leakcanary:leakcanary-android-instrumentation:2.5'
  androidTestUtil 'com.squareup.leakcanary:leakcanary-android-no-op:2.5' // required only in Android library modules
  testImplementation 'junit:junit:4.13.2'
}

3. 确认测试类引用正确的InstrumentationRunner，并尝试重新运行测试。