android - AppCompatTextView 在 API 22 上泄漏内存

Question

由于 AppCompatTextView，我出现了内存泄漏 它没有点击监听器，只是一个普通的 TexView，其中包含一些文本。

对此我能做些什么吗？这是一个错误还是我做错了什么？

我已经尝试过建议的解决方案 here但这没有帮助。

Answer 1

这是一个 Android 框架错误。 https://code.google.com/p/android/issues/detail?id=34731 即使在支持库中，它也尚未修复。

修复方法如下:

public static void fixInputMethodManagerLeak(Context destContext) {
    if (destContext == null) {
        return;
    }

    InputMethodManager imm = (InputMethodManager) destContext.getSystemService(Context.INPUT_METHOD_SERVICE);
    if (imm == null) {
        return;
    }

    String[] arr = new String[]{"mCurRootView", "mServedView", "mNextServedView"};
    Field f = null;
    Object obj_get = null;
    for (int i = 0; i < arr.length; i++) {
        String param = arr[i];
        try {
            f = imm.getClass().getDeclaredField(param);
            if (!f.isAccessible()) {
                f.setAccessible(true);
            }
            obj_get = f.get(imm);
            if (obj_get != null && obj_get instanceof View) {
                View v_get = (View) obj_get;
                if (v_get.getContext() == destContext) {  // referenced context is held InputMethodManager want to destroy targets
                    f.set(imm, null);  // set empty, destroyed node path to gc
                } else {
                    // Not want to destroy the target, that is, again into another interface, do not deal with, to avoid affecting the original logic, there is nothing further for the cycle
                    Log.e(TAG, "fixInputMethodManagerLeak break, context is not suitable, get_context=" + v_get.getContext() + " dest_context=" + destContext);
                    break;
                }
            }
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
}

这样调用它:

@Override
protected void onDestroy() {
    super.onDestroy();
    //if you get memory leak on configuration change too, remove the if clause.
    if (isFinishing()) {
        fixInputMethodManagerLeak(this);
    }
}

看看this question也。