Skip to main content
Use this API to stop listening for memory warning events that were registered with my.onMemoryWarning().

​
Parameters

PropertyTypeRequiredDescription
callbackFunctionNoThe specific callback to remove. If omitted, all listeners are removed.

​
Code Example

​
Remove All Listeners

// Remove all memory warning listeners
my.offMemoryWarning();

​
Remove Specific Listener

Page({
  onLoad() {
    my.onMemoryWarning(this.handleMemoryWarning);
  },

  handleMemoryWarning(res) {
    console.log('Memory warning:', res.level);
    this.releaseResources();
  },

  onUnload() {
    my.offMemoryWarning(this.handleMemoryWarning);
  },

  releaseResources() {
    this.setData({ cachedImages: [] });
  }
});

​
Conditional Memory Monitoring

Page({
  data: {
    monitoringMemory: false
  },

  startMemoryMonitoring() {
    my.onMemoryWarning(this.onMemoryWarning);
    this.setData({ monitoringMemory: true });
  },

  stopMemoryMonitoring() {
    my.offMemoryWarning(this.onMemoryWarning);
    this.setData({ monitoringMemory: false });
  },

  onMemoryWarning(res) {
    console.log('Memory level:', res.level);
  }
});
Pass the same callback function reference to my.offMemoryWarning() that was used with my.onMemoryWarning() to remove only that specific listener.

my.onMemoryWarning

Listen for memory warnings